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The game is not yet over for Gameover Zeus botnet

F-Secure's latest Threat Report highlights concerns that the force behind CryptoLocker ransomware was disabled but not destroyed.

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Cyberespionage group uses port of Windows backdoor to attack OS X

The new malware program is an OS X version of a Windows backdoor called XSLCmd, researchers from FireEye said.

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Botnet malware discovered on Healthcare.gov server

A server connected to Healthcare.gov had botnet malware on it, but the malicious code was never used and no personal information was compromised.

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Hackers make drive-by download attacks stealthier with fileless infections

New attacks with the Angler exploit kit inject code directly in browser processes without leaving files on disk, a researcher found.

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CryptoWall ransomware held over 600K computers hostage, encrypted 5 billion files

The gang behind this dangerous ransomware program has earned US$1 million so far, researchers from Dell SecureWorks said

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Security vulnerabilities on the decline but risk assessment is often flawed, says IBM

The number of vulnerabilities could reach a three-year low in 2014, but correctly assessing their risk can be hard, IBM researchers said

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US warns 'significant number' of major businesses hit by Backoff malware

Backoff malware is stealing credit card details, according to a cybersecurity alert

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Android app ambush: Researchers successfully hack Gmail 9 times out of 10

It sounds like a pretty ominous security exploit, but it sure doesn't look easy to pull off.

on greenbot.com

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Google broadens its malware sleuthing to sniff out deceptive downloads

More types of malicious software will be identified by Google's safe browsing service

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Malware is less concerned about virtual machines

Symantec finds most malware doesn't quit if it runs on VM, which used to be a sign it was being analyzed.