<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div><div><div><span class="Apple-style-span" style="font-family: Arial; ">In this issue:</span></div><div><span class="Apple-style-span" style="font-family: Helvetica; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 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; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-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; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="font-size: 12px; ">
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">1. New Mac Scareware Variant</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">2. Microsoft Fixes Hotmail Cross-Site Scripting Flaw</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">3. Can Social Media Cause You Harm?</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">1. New Mac Scareware Variant </p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">A new variant of scareware that targets Mac users, called MacGuard, has been detected, and this version does not require users to submit administrator passwords to install. Earlier versions of Mac scareware, which have gone by such names as Mac Defender, Mac Security and Mac Protector, all required administrator passwords. Users are at risk if they have set their Safari browsers to automatically open files designated as safe. </p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">Apple has acknowledged the scareware issue and says it will release an update to detect and remove the malware. The company has already published an advisory with recommendations for removing the malware or avoiding infection.</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">The advisory from Apple is available at <http://support.apple.com/kb/ht4650></p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">See the story in the news:</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><http://www.h-online.com/security/news/item/Mac-Defender-variant-doesn-t-require-admin-password-1250910.html></p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><http://www.informationweek.com/news/security/vulnerabilities/229625602></p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">2. Microsoft Fixes Hotmail Cross-Site Scripting Flaw</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">Microsoft has fixed a security issue in Hotmail that was being actively exploited to steal users' messages and contact lists. Attackers sent email messages to targets containing malicious scripts. Computers become infected when recipients open or preview the message. The embedded code uploaded messages and contact lists to remote servers. The attack was possible due to a cross-site scripting flaw which has been remedied.</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">According to the article by the Register: "It's unclear how many Hotmail users may have been affected by the exploits and whether Microsoft has adequately warned users they may have been compromised. Microsoft spokesman Bryan Nairn wouldn't say how many subscribers were targeted or when the patch was put in place."</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">See the story in the news:</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><http://www.theregister.co.uk/2011/05/24/microsoft_hotmail_email_theft_attack/></p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">3. Can Social Media Cause You Harm?</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">When using such social media communication tools as Twitter or Facebook, we may not always think about who will be able to see our comments and posts. As far as we know, only our friends and followers can see them. But is this true?</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">In two recent articles on the Boston Globe I found several examples listed of when posts made to Facebook led to job termination or other problems with employers. The lesson it teaches is that what for you might be a mechanism for venting or sharing your working situation with your trusted friends, is for others a reason to see you as unsuitable in your job. </p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">In a perfect world, our online conversations are protected by the privacy settings on Facebook and in some cases the First Amendment protects us as well, but common sense tells us that these "protections" are not iron-clad. The internet, and social media by design, is a public forum for conversations. A secret is not a secret if it is conveyed to more than one person. </p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">Best rule of thumb: If you don't want even one other person knowing about something you think or feel, it's best not to use the Internet to share those feelings and thoughts.</p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">Read the stories at Boston.com:</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><http://www.boston.com/news/local/massachusetts/articles/2011/05/27/facebook_comments_bring_firing_and_a_fight/></p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><http://www.boston.com/news/local/articles/2011/05/26/facebook_misstep_gets_abington_substitute_teacher_fired/></p>
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<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">Read all Security FYI Newsletter articles online at http://securityfyi.wordpress.com/.</p>
<p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial">====================================================================</p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><br></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Arial"><br></p></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; ">Monique Yeaton</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; ">IT Security Communications Consultant</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; ">MIT Information Services & Technology (IS&T)</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; ">(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; ">http://ist.mit.edu/security</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></div></div></body></html>