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Global Internet Security Alerts


  • 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.

Virus Activity

The World Map is a visual tool for presenting geographically grouped summaries of known virus infections.

View up-to-date map »

Safety Tip

Sexual Filenames Avoid attachments with sexual filenames. E-mail worms often use attachments with names like PORNO.EXE or PAMELA_NUDE.VBS to lure users into executing them.

Security Terms

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Packer

A program that compresses, or reduces, the size of a program's code, often by re-coding it to a smaller size. Packers are used to minimize a program's download times and save storage space. Malicious packers are those commonly used to pack malware.

A program which has been compressed by a packer must be decompressed to its original state before it can be executed. This may be a security risk if the packed program happens to be malware. To mitigate this risk, most virus scanners will identify the packer used to compress a file and if the packer is malicious, the file is flagged.

Virus writers commonly use a variety of packing techniques to prevent virus scanners from identifying a malicious file, including using multiple packers to compress the file.

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