VB Migration

Tag: unicode

  • Left-to-right override makes a return in spam

    Trick shows that spammers still try to beat content-based filters. A decade ago, when spam had become a serious issue, most spam filters tried to block the unwanted emails based on their content. This resulted in a cat-and-mouse game between spammers and spam filters, with the former constantly looking for new ways to obfuscate the…

  • Spammers use unicode trick to manipulate file names

    Windows executable appears to be Word document. An unicode trick that reverses the order of some characters has been used by spammers to disguise malicious attachments as harmless file types. Unicode enables the representation on computer screens of a very large and still growing number of alphabets, together with many special characters. Among this latter…