Rootkit:W32/ZAccess Rootkit:W32/ZAccess constantly displays advertisements on the infected machine and may silently contact remote servers to retrieve additional advertising information.
Backdoor:OSX/DevilRobber.A Backdoor:OSX/DevilRobber.A silently installs applications related to Bitcoin-mining; it may also harvest data from the infected machine and listen for additional commands from a remote user.
Backdoor:OSX/Tsunami.A Backdoor:OSX/Tsunami.A is a distributed denial-of-service (DDoS) flooder that is also capable of downloading files and executing shell commands in an infected system.
Trojan-Downloader:OSX/Flashback.C Trojan-Downloader:OSX/Flashback.C poses as a Flash Player installer and connects to a remote host to obtain further installation files and configuration.
Double-check If you feel that an e-mail you get from a friend is somehow strange - if it is in a foreign language or if it just says odd things, double-check with the friend before opening any attachments.