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Blackhole Spam Run Evades Detection Using Punycode

20

May

2013

The Blackhole Exploit Kit (BHEK) spam run has already assumed various disguises during its course. Some variants have taken various forms, such as official bank notice, cable provider email update, social networking email, and fake courier notification.Lately, we have seen a slew of spam crafted as a notice from the popular retail chain Walmart. However, […]

Category General Written by Security Intelligence 0 Comments

Reversal of fortune: Attempts to disguise file names

15

Sep

2012

Social engineering tactics are vast and varied, and we see all sorts of methods being used on a daily basis by malware authors, in their attempts to compromise your machine. One such method that we see often is malware being distributed as an alluring or enticing link or file, and we know that some users […]

Category General Written by Microsoft Malware Protection Center 0 Comments

Spammers Take Advantage of Unicode Normalization to Hide URLs

04

Aug

2011

by Francisco Pardo and Nick Johnston Spammers are never idle when it comes to finding new ways to bypass mail filters—after all, this is crucial to a spammer's success. Recently, we've seen a low but steady number of spam messages in which spammers are replacing certain characters in URLs (which point to spam sites) with […]

Category General Written by Symantec Security Response Blog 0 Comments

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Spammers Take Advantage of Unicode Normalization to Hide URLs

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