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Cloudmark Security Blog

Trusted research on email, mobile, web, and DNS security.

Tag Archives: trojan apps

Apple OS X Ransomware Delivered by Trojanized Transmission App

Mon, 07 Mar 2016 Tom Landesman Leave a comment

The short: A newly discovered ransomware-delivering trojan for Apple’s OS X operating system may have infected several thousand users over the weekend. The trojan, OS X.KeRanger.A, was delivered via a malicious build of the Mac OS X bittorrent client ‘Transmission’ and will begin encrypting victims’ local files today after a 3 day waiting period. This […]

Posted in 2016, Cloudmark, Cyber Security, Malware, Online Security, Ransomware

Android Trojan Used To Create Simple SMS Spam Botnet

Sun, 16 Dec 2012 Andrew Conway 54 Comments

A new crop of trojan mobile applications are demonstrating simple mobile botnet behavior, leveraging infected handsets to spread spam and invitations for other users to download the infected apps. This new evolution of malicious mobile applications is presently being monitored by the Cloudmark mobile security research team who had been investigating a strong uptick in […]

Posted in 7726, Botnets, Mobile, SMS / Texting, SMS Fraud

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