<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">In this issue:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">1. Beware the "April 1" Conficker Worm</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; "><span style="font: 14.0px Arial">2. </span>Twitter Cross-Site Scripting Flaw</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">3. What is a Botnet?</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">-------------------------------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">1. Beware the "April 1" Conficker Worm</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">-------------------------------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">The media has been spotlighting a big new threat by the Conficker worm which has been around since November of last year. The first strain was quickly followed up by a second more aggressive strain in December and a third has been sighted this week, called Conficker C, which is supposed to be set to wreak havoc on April 1, impacting millions of computers.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; ">According to McAfee, the makers of the VirusScan software that is distributed and supported by MIT's IS&T department, this frenzy around the worm is not based on any supporting facts. However, no one can be sure what will happen on April Fool's Day. </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; min-height: 16px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; ">What is sure, says the McAfee blog, is that "almost all the security vendors have thoroughly analyzed Conficker–also known as Downadup and Kido worm–and have good generic detection and cleaning in place." The detection rate of virus protection software will be 90% or above, so keep your anti-virus software running and updated! The blog also offers information on the cleaning tool "Stinger" and a link to mitigation steps for IT staff.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; min-height: 16px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; ">The McAfee Avert Labs Blog:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; "><<a href="http://www.avertlabs.com/research/blog/">http://www.avertlabs.com/research/blog/</a>></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; min-height: 16px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; ">The story in the news:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; "><<a href="http://tech.yahoo.com/blogs/null/128643/beware-conficker-worm-come-april-1/">http://tech.yahoo.com/blogs/null/128643/beware-conficker-worm-come-april-1/</a>></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; "><<a href="http://www.pcmag.com/article2/0,2817,2343910,00.asp">http://www.pcmag.com/article2/0,2817,2343910,00.asp</a>></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; min-height: 16px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; min-height: 16px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">--------------------------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; "><span style="font: 14.0px Arial">2. </span>Twitter Cross-Site Scripting Flaw</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">--------------------------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">A cross-site scripting vulnerability in Twitter could be exploited to spread malware virally through the microblogging service. While as yet only proof-of-concept code has been released, the flaw could be exploited to hijack Twitter accounts or compromise users' computers. Twitter has been notified about the flaw.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">Read the full story here:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; "><<a href="http://www.h-online.com/security/Twitter-XSS-vulnerability--/news/112905">http://www.h-online.com/security/Twitter-XSS-vulnerability--/news/112905</a>></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">--------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">3. What is a Botnet?</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">--------------------------</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">You've likely seen this term before and figured you knew what it meant: some kind of network of robot machines, and you would be correct. But how did these happen and what do they do?</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">Criminals install hidden software on your computer in several ways. First, they scan the Internet to find computers that are unprotected, and then install software through those "open doors." Spammers may send you an email with attachments, links or images. Once you click on or open them, they will install hidden software. Sometimes just visiting a web site or downloading files may cause a "drive-by download," which installs malicious software that could turn your computer into a "bot". </div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">Now your computer is part of a "zombie army" of tens to hundreds of thousands of computers sending emails by the millions. Computer security experts estimate that most spam is sent by computers that are controlled remotely by their criminal masters, and that millions of these computers are part of botnets. The consequences to you, the computer owner, can be more than just annoying. Your Internet Service Provider (ISP) may shut down your account if your computer is detected sending out spam.</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">To learn how to tell if your computer is part of a botnet, what you can do to prevent botnetting, or what actions you can take after botnetting has occurred, see this Hermes knowledge base article:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Arial; "><<a href="http://kb.mit.edu/confluence/x/aipB">http://kb.mit.edu/confluence/x/aipB</a>></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; ">[Source: SANS Ouch Newsletter]</div><div><br></div><div apple-content-edited="true"> <div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div><br></div><div><span class="Apple-style-span" style="font-size: 12px; ">=========================</span></div></span></div></div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; 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"><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; ">(617) 253-2715</span></span></span></span></span></span></div><div style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><span class="Apple-style-span" style="font-size: 12px; "><a href="http://web.mit.edu/ist/security">http://web.mit.edu/ist/security</a></span></span></span></span></span></span></div><div style="font-size: 12px; "><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span></span></span></span></span></span></div></span> </div><br></body></html>