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	<title>Blog &#124; jim80.net &#187; Security</title>
	<atom:link href="http://blog.jim80.net/tag/security/feed/" rel="self" type="application/rss+xml" />
	<link>http://blog.jim80.net</link>
	<description>Security, Systems, and Storage</description>
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		<title>Data Fail: Sidekick Phones</title>
		<link>http://blog.jim80.net/2009/10/12/data-fail-sidekick-phones/</link>
		<comments>http://blog.jim80.net/2009/10/12/data-fail-sidekick-phones/#comments</comments>
		<pubDate>Tue, 13 Oct 2009 03:43:42 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Availability]]></category>
		<category><![CDATA[Infrastructure]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Storage]]></category>
		<category><![CDATA[Cloud computing]]></category>
		<category><![CDATA[Disaster Recovery]]></category>
		<category><![CDATA[FAIL]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=334</guid>
		<description><![CDATA[The Microsoft data store where T-Mobile Sidekick phones save their user data, such as contact info and pictures, has been reported to have been lost beyond repair. On October 3, T-Mobile Chief Operations Officer, Jim Alling wrote the following post on the T-Mobile forum site: Dear valued T-Mobile Sidekick customers: I realize that for many [...]]]></description>
			<content:encoded><![CDATA[<p>The Microsoft data store where T-Mobile Sidekick phones save their user data, such as contact info and pictures, has been reported to have been lost beyond repair.</p>
<p>On October 3, T-Mobile Chief Operations Officer, Jim Alling wrote <a href="http://forums.t-mobile.com/tmbl/board/message?board.id=Sidekick2&amp;thread.id=5186"><span style="color: #888888;">the following post</span></a> on the T-Mobile forum site:</p>
<blockquote><p>Dear valued T-Mobile Sidekick customers:</p>
<p>I realize that for many of you, your T-Mobile Sidekick is how you stay in touch with your friends, family and others.  I sincerely apologize for the impact the current disruption of data services may be having on you.  I assure you that T-Mobile is working very closely with Danger/Microsoft to resolve the issue as quickly as possible.  T-Mobile-supported services, such as voice calls and SMS/MMS, have not been affected and continue to be operational.  Danger/Microsoft has been working, and will continue working through the week, to restore data functionality and other features.</p>
<p>I understand that this data service disruption is very frustrating to our valued Sidekick customers.  For many years, the Sidekick has been, and continues to be, a cornerstone device for T-Mobile.  And we believe Sidekick customers are among the most loyal customers anywhere.  Recognizing that, and to address any inconvenience Sidekick data customers are experiencing, T-Mobile will automatically credit one month of data service to customers who subscribe to T-Mobile Sidekick data plans.  There is nothing you need to do to get this credit – T-Mobile will post the credit to these accounts in the coming days.</p>
<p>We will continue to post the latest information and FAQs to these Forums. I appreciate you being a loyal T-Mobile customer, and appreciate your patience as everyone works hard to resolve the current issues.  Thank you.</p>
<p>Sincerely,</p>
<p>Jim Alling, Chief Operations Officer, T-Mobile USA</p>
<div><span> </span><span><br />
</span></div>
</blockquote>
<p>Then, after a torrent of discussion on the forum site, <a href="http://forums.t-mobile.com/tmbl/board/message?board.id=Sidekick2&amp;thread.id=20218">the following update</a> was provided earlier today:</p>
<blockquote><p>Dear valued T-Mobile Sidekick customers:</p>
<p>We are thankful for your continued patience as Microsoft/Danger continues to work on preserving platform stability and restoring all services for our Sidekick customers.  We have made significant progress this past weekend, restoring services to virtually every customer.  Microsoft/Danger has teams of experts in place who are working around-the-clock to ensure this stability is maintained.</p>
<p>Regarding those of you who have lost personal content, T-Mobile and Microsoft/Danger continue to do all we can to recover and return any lost information.  Recent efforts indicate the prospects of recovering some lost content may now be possible.  We will continue to keep you updated on this front; we know how important this is to you.</p>
<p>In the event certain customers have experienced a significant and permanent loss of personal content, T-Mobile will be sending these customers a $100 customer appreciation card.  This will be in addition to the free month of data service that already went to Sidekick data customers.  This card can be used towards T-Mobile products and services, or a customer’s T-Mobile bill.  For those who fall into this category, details will be sent out in the next 14 days – there is no action needed on the part of these customers.  We however remain hopeful that for the majority of our customers, personal content can be recovered.<br />
===<br />
<span style="color: #e20074;"><strong>Dan<br />
Moderator, T-Mobile Forums</strong></span></p></blockquote>
<p>At this time, neither Microsoft nor T-Mobile have confirmed <a href="http://forums.t-mobile.com/tmbl/board/message?board.id=Sidekick2&amp;thread.id=15136">conjecture</a> that a SAN update caused the failure:</p>
<blockquote><p>So yeah..</p>
<p>I would like to know what discounts are T-mobile going to give on a new Phone. I am probably going to move to the Moto Cliq, But I and other sidekick users should get a full phone discount not just a % of it..  (Microsoft should pay for it)</p>
<p>hmm <span><span> <strong>Roz Ho</strong> haven&#8217;t you her of BACKUP&#8230;?</span></span></p>
<p><strong><span> Quoting Hiptop3 </span></strong></p>
<p><span style="color: #ff0000;"> &#8220;</span><span><em><strong>Currently the rumor with the most weight is as follows:</strong></em></span></p>
<p><span><em><strong>Microsoft was upgrading their SAN (Storage Area Network aka the thing that stores all your data) and had hired Hitachi to come in and do it for them. Typically in an upgrade like this, you are expected to make backups of your SAN before the upgrade happens. Microsoft failed to make these backups for some reason. We’re not sure if it was because of the amount of data that would be required, if they didn’t have time to do it, or if they simply forgot. Regardless of why, Microsoft should know better. So Hitachi worked on upgrading the SAN and something went wrong, resulting in it’s destruction. Currently the plan is to try to get the devices that still have personal data on them to sync back to the servers and at least keep the data that users have on their device saved</strong></em>. <span style="color: #ff0000;"> &#8220;</span></span></p>
<p>WOW.</p>
<p>Microsoft Do you understand that you are making yourself and T-mobile loose MONEY????</p>
<p>Also with me being a Sidekick owner I feel betrayed by Microsoft not T-mobile.</p>
<p>This outage I was all fine about at first but now it is just to much. We sidekick owners rely on Danger witch is now owned by Micro to keep are data stored on a secure server and that is why us users never backed up are data. I mean the sidekick does not even have a mass contact save Option. The user has to save them one by one. If I do stay with the sidekick I would like to see Options to save all on SD becuase a SIM can only hold around 250..</p>
<p>I have lost business and meetings from this outage and I am not happy.</p>
<p>So to everyone</p>
<p>It is not T-mobiles Fault so do not blame them. There customer service has been AWESOME</p>
<p>Also Danger and Microsoft do not comunicate with T-mobile as much that is why there is not much info.</p>
<p>&#8220;I wonder if we call Microsoft and bug them will they give us any info, they will probably say u have to call t-mobile. Well T-mobile is not the one who messed up,.they do not UPDATE THE SAN&#8230;..&#8221;</p></blockquote>
<p>After a week of attempting to salvage the data, it would appear as though Microsoft was unsuccessful in doing so. If the SAN speculation is correct, then it was simply a failure of the data&#8217;s underlying SAN. The question is, why should a failing SAN bring with it the data of an entire customer base? I severely doubt that this would have occurred had this been a normal hardware breakdown. Well-designed storage solutions are built with the precondition of being able to survive a head failure, network failure, any sort of failure, really, without losing data. One would thus speculate that gross human error was at fault, and frankly, that means that management was not doing their job. Not enough layers of redundancy were built into this system, and not enough protective layers were written into policy to prevent this human error, or whatever it was, from cascading into a data-lost scenario. Data management is a big responsibility, and not enough resources go into its upkeep in many firms. It would thus appear that Microsoft appears to be one of the latter.</p>
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		<title>Slowloris and You</title>
		<link>http://blog.jim80.net/2009/08/26/slowloris-and-you/</link>
		<comments>http://blog.jim80.net/2009/08/26/slowloris-and-you/#comments</comments>
		<pubDate>Wed, 26 Aug 2009 12:55:32 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Apache]]></category>
		<category><![CDATA[DoS]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[iptables]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=274</guid>
		<description><![CDATA[UPDATE: 20090826 &#8211; Corrected typo in &#8220;Slowloris and You.&#8221; It used to say &#8220;Slowlaris and You.&#8221; I keep getting slowloris confused with my nickname for &#8220;Solaris.&#8221; =D Back in July, http://ha.ckers.org/slowloris/ published an exploit against Apache and other web servers (go to the link for further) that takes advantage of multi-threaded applications. It works by [...]]]></description>
			<content:encoded><![CDATA[<p>UPDATE: 20090826 &#8211; Corrected typo in &#8220;Slowloris and You.&#8221; It used to say &#8220;Slowlaris and You.&#8221; I keep getting slowloris confused with my nickname for &#8220;Solaris.&#8221; =D</p>
<p>Back in July, <a href="http://ha.ckers.org/slowloris/">http://ha.ckers.org/slowloris/</a> published an exploit against Apache and other web servers (go to the link for further) that takes advantage of multi-threaded applications. It works by tying up web server threads with partial HTTP requests, then sends TCP handshakes to keep the socket open. In general, multi-threaded web servers such as httpd, apache, and apache2 are vulnerable. IIS and most proxies are not vulnerable</p>
<p><a href="http://www.cert.org/blogs/vuls/2009/07/slowloris_vs_your_webserver.html"><br />
CERT</a> suggested using iptables to rate limit incoming port 80 requests. In general, this should be fine for many applications, though CERT has warned that some large clients behind NAT&#8217;s may be affected and thus the hitcount/time ratio should be adjusted according to your needs.</p>
<p><a href=" http://www.funtoo.org/en/security/slowloris/"><br />
http://www.funtoo.org/en/security/slowloris/</a> offers tips on mitigating this attack by enabling delayed binding on hardware load balancers.</p>
<p>In short, it appears as though the consensus mitigation method involves connection restrictions in the form of iptables or apache modules (most are of limited value, frankly), or shielding the web servers behind load balancers (such as <a href="http://haproxy.1wt.eu/">HA-Proxy</a>).</p>
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		<title>Conficker Update Part 3</title>
		<link>http://blog.jim80.net/2009/06/12/conficker-update-part-3/</link>
		<comments>http://blog.jim80.net/2009/06/12/conficker-update-part-3/#comments</comments>
		<pubDate>Fri, 12 Jun 2009 15:56:36 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Virii]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[conficker]]></category>
		<category><![CDATA[downadup]]></category>
		<category><![CDATA[worms]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=231</guid>
		<description><![CDATA[According to http://forum.drweb.com/index.php?showtopic=277240 , Win32.HLLW.Shadow.based is a a variant of Conficker/downadup. Symptom: Every available port from 1024-5000 is used to connect to various servers on destination port 445. Basically, the worm opens these connections to download and wait for malicious binaries. The removal tools at http://www.bdtools.net/ does not detect this variant, and you have to [...]]]></description>
			<content:encoded><![CDATA[<p>According to <a href="http://forum.drweb.com/index.php?showtopic=277240">http://forum.drweb.com/index.php?showtopic=277240</a> , Win32.HLLW.Shadow.based is a a variant of Conficker/downadup.</p>
<p><strong>Symptom:</strong> Every available port from 1024-5000 is used to connect to various servers on destination port 445. Basically, the worm opens these connections to download and wait for malicious binaries.</p>
<p>The removal tools at <a href="http://www.bdtools.net/">http://www.bdtools.net/</a> does not detect this variant, and you have to use Dr.Web&#8217;s <a href="ftp://ftp.drweb.com/pub/drweb/cureit/cureit.exe">Cureit</a> to detect and remove it. According to them, the recommended procedure is to install the following hotfixes:<br />
* MS08-067<br />
(<a href="http://www.microsoft.com/technet/security/bulletin/ms08-067.mspx">http://www.microsoft.com/technet/security/bulletin/ms08-067.mspx</a>);</p>
<p>* MS08-068<br />
(<a href="http://www.microsoft.com/technet/security/bulletin/ms08-068.mspx">http://www.microsoft.com/technet/security/bulletin/ms08-068.mspx</a>);</p>
<p>* MS09-001<br />
(<a href="http://www.microsoft.com/technet/security/bulletin/ms09-001.mspx">http://www.microsoft.com/technet/security/bulletin/ms09-001.mspx</a>).</p>
<p>And then run <a href="ftp://ftp.drweb.com/pub/drweb/cureit/cureit.exe">Cureit</a>, a fully functional shareware app.</p>
<p>In case you&#8217;re reading this from an infected server, I&#8217;ve downloaded and included some of these files <a href="ftp://www.jim80.net/">here</a> (because if you&#8217;re infected, you won&#8217;t be able to access certain sites, drweb.com being one).</p>
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		<title>Dynamic iptables &#8211; &#8220;Flexible (and fun)&#8221;</title>
		<link>http://blog.jim80.net/2009/05/30/dynamic-iptables-flexible-and-fun/</link>
		<comments>http://blog.jim80.net/2009/05/30/dynamic-iptables-flexible-and-fun/#comments</comments>
		<pubDate>Sat, 30 May 2009 18:29:18 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[DoS]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[DDoS]]></category>
		<category><![CDATA[iptables]]></category>
		<category><![CDATA[scripts]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=213</guid>
		<description><![CDATA[Have you ever said to yourself that there should be a tool to do x, start building a tool to do it, then about halfway through your little project, somebody glances over your shoulder and says to you &#8220;hey, I use a tool like that, it&#8217;s called y, you should check it out,&#8221; so you [...]]]></description>
			<content:encoded><![CDATA[<p>Have you ever said to yourself that there should be a tool to do <em>x</em>, start building a tool to do it, then about halfway through your little project, somebody glances over your shoulder and says to you &#8220;hey, I use a tool like that, it&#8217;s called <em>y</em>, you should check it out,&#8221; so you do, and <em>that</em> tool is far more comprehensive and well built than the one you were working on?</p>
<p>Well this isn&#8217;t one of those times, because this tool hit me from left field while I was researching ways to mitigate a DDoS attack. Though there are many, many ways to do it, if all you have is a Linux box facing the world with nothing to hide its private parts except iptables, then this &#8220;flexible (and fun)&#8221; toolset is another weapon you can deploy when you get that 2:30AM call saying &#8220;our website&#8217;s down and I think it&#8217;s being DDoS&#8217;d.&#8221;</p>
<p>The tool is a simple set of scripts that make adding and removing specific IP&#8217;s quick and simple. The main site of the author is at <a href="http://www.ibm.com/developerworks/library/l-fw/">http://www.ibm.com/developerworks/library/l-fw/</a>, or is available (hosted locally) <a href='http://blog.jim80.net/wp-content/uploads/2009/05/dynfw-1.0.tar.gz'>here</a>.</p>
<p>Once installed, you can simply ban/unban an IP by typing <strong><code>ipdrop {IP ADDRESS} {on|off}</code></strong></p>
<p>While perusing <a href="http://www.webhostingtalk.com/showthread.php?t=225477">this thread</a> at webhostingtalk.com, member <em>dynamicnet</em> mentioned grep-ing for ridiculous levels of SYN_RECV &#8216;d connections (this is indicative of a TCP SYN Flood attack) and generating ipdrop commands for quick banning of a SYN Flood-ing IP&#8217;s. Though you may accidentally drop one or two legitimate IP&#8217;s (have a rule already in place so you don&#8217;t ban yourself out of a remote box), you&#8217;ll likely get the bulk of the attacking IP&#8217;s.</p>
<p>Use <strong><code>netstat -n -p|grep SYN_REC | wc -l</code></strong> to count how many SYN_RECV connections you have.</p>
<p>Use <strong><code>netstat -n -p | grep SYN_REC | awk '{print $5}' | sort -u | awk -F: '{print "ipdrop "$1 " on"}'</code></strong> to generate code to ban IP&#8217;s in SYN_RECV status.</p>
<p>Use <strong><code> cat /root/.dynfw-ipdrop |awk -F: '{print "ipdrop "$1" off"}' </code></strong> to generates code to &#8220;undrop&#8221; those IP&#8217;s.</p>
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		<title>Conficker Update Part Deuce</title>
		<link>http://blog.jim80.net/2009/04/14/conficker-update-part-deuce/</link>
		<comments>http://blog.jim80.net/2009/04/14/conficker-update-part-deuce/#comments</comments>
		<pubDate>Wed, 15 Apr 2009 00:54:16 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Virii]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[conficker]]></category>
		<category><![CDATA[downadup]]></category>
		<category><![CDATA[worms]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=188</guid>
		<description><![CDATA[UPDATE 11 Jun 2009: Locally hosted bdtools removal tools (availabe at downadup.org for single computers and network. Cheers =D Our favorite worm got an update 8 April according to Network World. Read more here&#8230; And of course, at downadup.org.]]></description>
			<content:encoded><![CDATA[<p>UPDATE 11 Jun 2009: Locally hosted bdtools removal tools (availabe at <a href="http://downadup.org">downadup.org</a> for <a href='ftp://www.jim80.net/bdtools.net/'>single computers and network</a>. Cheers =D</p>
<p>Our favorite worm got an update 8 April according to Network World. Read more <a href="http://www.networkworld.com/news/2009/041009-conficker-awakens-starts.html?ts0hb&amp;story=ts_confkr">here&#8230;</a><br />
And of course, at <a href="http://downadup.org">downadup.org</a>.</p>
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		<title>Key-Genius Leverages Yubikey to Secure Web-Logins</title>
		<link>http://blog.jim80.net/2009/04/05/key-genius-leverages-yubikey-to-secure-web-logins/</link>
		<comments>http://blog.jim80.net/2009/04/05/key-genius-leverages-yubikey-to-secure-web-logins/#comments</comments>
		<pubDate>Sun, 05 Apr 2009 19:42:17 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Authentication]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[GRC]]></category>
		<category><![CDATA[keystroke monitoring]]></category>
		<category><![CDATA[multi-factor authentication]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=132</guid>
		<description><![CDATA[So I was listening to another Security Now podcast and heard about a promising new authentication technology designed by Yubico that generates asynchronous one time passwords with a simple push of a button. The device can authenticate against the maker&#8217;s servers or your own. The device itself registers as a USB keyboard and is therefore [...]]]></description>
			<content:encoded><![CDATA[<p>So I was listening to another <a href="http://twit.tv/sn188">Security Now podcast</a> and heard about a promising new authentication technology designed by <a href="http://www.yubico.com/products/yubikey/">Yubico </a>that generates asynchronous one time passwords with a simple push of a button. The device can authenticate against the maker&#8217;s servers or your own. The device itself registers as a USB keyboard and is therefore compatible with most computers. The device costs less than $25 each, with discounts for bulk purchases.</p>
<p><a href="http://key-genius.appspot.com/">Key Genius</a> is a product that leverages the <a href="http://www.yubico.com/products/yubikey/">Yubikey</a> to provide a more secure platform for logging into websites. It recently won an award in the <a href="http://wiki.yubico.com/wiki/index.php/YubiKing_Award">Yubiking competition</a>, in partnership with Security Now. The site stores site-specific passwords in an encrypted database, and using a browser extension, replies to valid Yubikey passwords by automatically inserting the correct password for the site. Usernames are not stored by Key Genius at all, so it&#8217;s up to the user to supply them to the website in question. This is actually a good thing, as compromise of the Key Genius database cannot in of itself bely a user&#8217;s logon credentials.  This is a neat product that not only enhances convenience, but does so in a secure manner.</p>
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		<title>Conficker Update</title>
		<link>http://blog.jim80.net/2009/04/01/conficker-update/</link>
		<comments>http://blog.jim80.net/2009/04/01/conficker-update/#comments</comments>
		<pubDate>Wed, 01 Apr 2009 15:13:35 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Infrastructure]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[conficker]]></category>
		<category><![CDATA[Disaster Recovery]]></category>
		<category><![CDATA[downadup]]></category>
		<category><![CDATA[GRC]]></category>
		<category><![CDATA[multi-factor authentication]]></category>
		<category><![CDATA[PPP]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=115</guid>
		<description><![CDATA[Update: An excellent resource list is available at the Internet Storm Center. The headline at dailymail.co.uk read &#8220;April Fool&#8217;s Day computer virus is activated&#8230; but fails to cause internet chaos.&#8221; I guess the rumors were unfounded. However, it&#8217;s important to note that the virus is still rampant and speculation on the potential uses of such [...]]]></description>
			<content:encoded><![CDATA[<p style="text-align: center;"><em>Update: An excellent resource list is available at the <a href="http://www.dshield.org/conficker">Internet Storm Center</a>.</em></p>
<address style="text-align: center;"> </address>
<p>The headline at <a href="http://www.dailymail.co.uk/sciencetech/article-1166077/April-Fools-Day-virus-activated--fails-cause-internet-chaos.html" target="_blank">dailymail.co.uk</a> read &#8220;April Fool&#8217;s Day computer virus is activated&#8230; but fails to cause internet chaos.&#8221;</p>
<p>I guess the rumors were unfounded. However, it&#8217;s important to note that the virus is still rampant and speculation on the potential uses of such a huge botnet are as well. Some surmise that it might be used to DDOS the crap out of some poor server(s). It might also be used to crack passwords or encryption. Check out <a href="http://downadup.org/">http://downadup.org</a> to read more and for removal tools. It&#8217;s also a good idea to prepare your network for the potentiality of attack. Don&#8217;t be a soft target.</p>
<p>Here&#8217;s a couple (read non-comprehensive) ideas on how to not be a soft target:</p>
<ul>
<li>Backup, backup, backup
<ul>
<li>Have systems ready to leap into action if necessary, and keep at least one form of backup offline in case of <a href="http://blog.jim80.net/2009/03/24/webhostingtalk-hacked-hardcore-but-still-online/" target="_self">worst-case scenarios</a>.</li>
<li>If you don&#8217;t already have a backup strategy in place, it&#8217;s time to implement one.</li>
</ul>
</li>
<li>Control access to your critical services
<ul>
<li>Enforce strong passwords &#8211; or better yet, employ multi-factor authentication. <a href="http://blog.jim80.net/2009/03/15/multi-factor-authentication-for-cheap/" target="_self">PPP</a> is a strong candidate for the thrifty.</li>
<li>Audit your users &#8211; does that guy who quit last year still have an active user account? Do your non-administrative users have access to critical servers?</li>
<li>Use fail2ban or iptables to detect and drop password-guessing attacks &#8211; even with 10 million + IP&#8217;s to choose from, it&#8217;s not easy to crack a password/one-time password combination when you only get 3 tries per IP.</li>
</ul>
</li>
<li>Watch your traffic (not really a botnet vulnerability, but good practice in general):
<ul>
<li>Control your legacy services &#8211; seriously, it&#8217;s time to retire <a href="http://www.milw0rm.com/exploits/8055">telnet</a> and other services that transmit passwords in cleartext.</li>
<li>https &gt; http &#8211; especially when it comes to passwords. Don&#8217;t allow users the ability to transmit passwords over http.</li>
</ul>
</li>
<li>etc&#8230;</li>
</ul>
<p>I&#8217;ve hardly compiled a comprehensive list, and I welcome comments for other good practices, but the most important takeaway is to be cognizant of your security stance. Don&#8217;t make it easy for the bad guys.</p>
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		<title>Conficker</title>
		<link>http://blog.jim80.net/2009/03/23/conficker/</link>
		<comments>http://blog.jim80.net/2009/03/23/conficker/#comments</comments>
		<pubDate>Tue, 24 Mar 2009 01:10:20 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Internet]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Virii]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[Auto-run]]></category>
		<category><![CDATA[downadup]]></category>
		<category><![CDATA[worms]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=96</guid>
		<description><![CDATA[If you haven&#8217;t heard about the growing population of Windows machines hosting this prolific worm, educate yourself, particularly if you run Windows networks. This worm has been spreading like the plague since at least November 2008, and is presently estimated as having infected about 10 million machines. That&#8217;s a big botnet. It&#8217;s an active one [...]]]></description>
			<content:encoded><![CDATA[<p>If you haven&#8217;t heard about the growing population of Windows machines hosting this prolific worm, <a href="http://www.bdtools.net/what-is-downadup.php" target="_blank">educate yourself</a>, particularly if you run Windows networks. This worm has been spreading like the plague since at least November 2008, and is presently estimated as having infected about 10 million machines. That&#8217;s a big botnet. It&#8217;s an active one too, regularly &#8220;dialing home&#8221; to <a href="http://www.theregister.co.uk/2009/03/07/conficker_upgrade/" target="_blank">now over 50,000 domains</a> to receive updates. Its variants spread through various mediums, and favor network shares and USB drives.</p>
<p>If you can stand the gripes from your users, disabling Autorun through a forced registry setting (scripts, custom built ADM) is not a bad idea in general, so what if they have to open the folder and double-click the executable that&#8217;s likely in the top-level directory anyways?. Read the <a href="http://www.cert.org/blogs/vuls/2008/04/the_dangers_of_windows_autorun.html" target="_blank">Cert/CC blog</a> for more about this work around. Of key importance is that for whatever reason, the setting in HKCU overrides the HKLM setting. It may go without saying, but your best bet is cover both fronts.</p>
<p>If your network is infected presently, the following site hosted by BitDefender has a good list of symptoms to look for. In addition, the company has recently published both a single-workstation tool and a network tool to remove the worm from your computers. You can find these resources at <a href="http://downadup.org/" target="_blank">http://downadup.org/</a>.</p>
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		<title>Spear Phishing</title>
		<link>http://blog.jim80.net/2009/03/22/spear-phishing/</link>
		<comments>http://blog.jim80.net/2009/03/22/spear-phishing/#comments</comments>
		<pubDate>Sun, 22 Mar 2009 19:45:58 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Phishing]]></category>
		<category><![CDATA[Scams]]></category>
		<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://blog.jim80.net/?p=81</guid>
		<description><![CDATA[So I was listening to APM&#8221;s Marketplace Money podcast for 20 Mar 2009 today, and I ran across a term that I haven&#8221;t heard before: spear phishing. A guest from Consumer Reports described it as follows: &#8220;Regular phishing is kind of like throwing a bunch of bait in the water, or chumming for shark or [...]]]></description>
			<content:encoded><![CDATA[<p>So I was listening to APM&#8221;s <a href="http://www.audible.com/marketplacemoney/" target="_blank">Marketplace Money podcast</a> for 20 Mar 2009 today, and I ran across a term that I haven&#8221;t heard before: <em>spear phishing</em>. A guest from Consumer Reports described it as follows:</p>
<p>&#8220;Regular phishing is kind of like throwing a bunch of bait in the water, or chumming for shark or something like that. Spear phishing is a much more targeted type of phishing where the phishers actually get a hold of some of your personal information and design the email or a mailing notice to look that much more legitimate. Whether it&#8221;s fake emails from the IRS, we&#8221;ve even seen some from Western Union, or reporting to be someone from Western Union, rather. Unfortunately, due to the prevalence of social networking sites like Facebook and others, identity thieves are finding it very easy to find all sorts of personal information that makes spear phishing that much easier.&#8221;  (Edited for clarity)</p>
<p>Homeowners in default are in particular risk, because their mortgage information becomes public, and make prime targets for scammers purporting to represent the victim in adjusting their mortgage. The victim is instructed to pay a hefty fee for the service and to not contact the lender during the &#8220;adjustment process.&#8221; During this period, the homeowner may end up in foreclosure, at which point the scammer disappears.</p>
<p>An excerpt from<a href="http://www.ftc.gov/bcp/edu/pubs/consumer/homes/rea04.pdf" target="_blank"> December 2008 release of FTC&#8221;s &#8220;FTC Facts for Consumers:&#8221;</a></p>
<p><em>Be Alert to Scams<br />
Scam artists follow the headlines, and know there are homeowners falling behind in their mortgage payments or at risk for foreclosure. Their pitches may sound like a way for you to get out from under, but their intentions are as far from honorable as they can be. They mean to take your money. Among the predatory scamsthat have been reported are:<br />
</em></p>
<ul>
<li><em> The foreclosure prevention specialist: The “specialist” really is a phony counselor who charges high fees in exchange for making a few phone calls or completing some paperwork that a homeowner could easily do for himself. None of the actions results in saving the home. This scam gives homeowners a false sense of hope, delays them from seeking qualified help, and exposes their personal financial information to a fraudster.<br />
</em></li>
<li><em>Some of these companies even use names with the word HOPE or HOPE NOW in them to confuse borrowers who are looking for assistance from the free 888-995-HOPE hotline.</em></li>
<li><em>The lease/buy back: Homeowners are deceived into signing over the deed to their home to a scam artist who tells them they will be able to remain in the house as a renter and eventually buy it back. Usually, the terms of this scheme are so demanding that the buy-back becomes impossible, the homeowner gets evicted, and the “rescuer” walks off with most or all of the equity.</em></li>
<li><em>The bait-and-switch: Homeowners think they are signing documents to bring the mortgage current. Instead, they are signing over the deed to their home. Homeowners usually don’t know they’ve been scammed until they get an eviction notice.</em></li>
</ul>
<p>As always, be skeptical of any unsolicited communication you may receive from anyone claiming to require your sensitive information. And if you are ever in doubt as to the the veracity of any phone number, it&#8221;s a good idea to check a public listing in the organizations official web site, or even better, a phone book. You do still get a phone book, don&#8221;t you?</p>
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		<title>Multi-Factor Authentication for Cheap.</title>
		<link>http://blog.jim80.net/2009/03/15/multi-factor-authentication-for-cheap/</link>
		<comments>http://blog.jim80.net/2009/03/15/multi-factor-authentication-for-cheap/#comments</comments>
		<pubDate>Sun, 15 Mar 2009 01:18:49 +0000</pubDate>
		<dc:creator>jim</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Security]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[GRC]]></category>
		<category><![CDATA[multi-factor authentication]]></category>
		<category><![CDATA[PPP]]></category>

		<guid isPermaLink="false">https://blog.jim80.net/2009/03/multi-factor-authentication-for-cheap/</guid>
		<description><![CDATA[Yes, cheap as in free. Steve Gibson, the superbly geeky old man of SpinRite fame, developed a printed passcode system for multi-factor authentication. It uses a Rijndael block cipher to generate a sequence of &#8220;pseudo-random&#8221; characters that allow a Systems Administrator to effectively lock down administrative access with very little overhead. Basically, you carry around [...]]]></description>
			<content:encoded><![CDATA[<p>Yes, <a href="http://www.homestarrunner.com" target="_blank">cheap as in free</a>. Steve Gibson, the superbly geeky old man of <a href="https://www.grc.com/sr/spinrite.htm" target="_blank">SpinRite</a> fame, developed a printed passcode system for multi-factor authentication. It uses a Rijndael block cipher to generate a sequence of &#8220;pseudo-random&#8221; characters that allow a Systems Administrator to effectively lock down administrative access with very little overhead. Basically, you carry around a credit-card sized printout, and every time you try to log in, you punch in your username, password, and the next passcode (it prompts you for the correct one). The nice thing is that it&#8217;s free and easy to implement, and it&#8217;s <a href="http://groups.google.com/group/ppp-pam/web/documentation" target="_blank">cake</a> on Debian. It&#8217;s not ported everywhere, so it&#8217;s not ubiquitous yet. However, with enough folks pitching in and developing front-ends for this product, this system can exponentially (literally) improve the security of your internet-facing systems.<br />
Go to the <a href="https://www.grc.com/ppp.htm" target="_blank">GRC website</a> to find out more.</p>
<p>PS. Almost forgot. Once you install the PAM module and lock down SSH for your admin accounts, don&#8217;t forget to disable su for your normal users. They shouldn&#8217;t need it anyways, but if it is enabled, then all someone has to do is crack a normal user account and su into your admin account, without having to get a hold of your passcode card.</p>
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