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Malware

Chronology of a Skype attack

By the middle of May, users around the world started to receive messages from their contacts through different instant-messaging applications, such as Skype and Gtalk - an attack that showed off how age-old techniques can ensnare thousands of users. Here, we analyze this attack.

Nymaim: Browsing for trouble

We have already discussed how a system gets infected with Win32/Nymaim ransomware. In this blog post, we reveal a new infection vector, a study of the different international locker designs and ransom prices as well as a complete technical analysis of its communication protocol.