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Trojan app encrypts files on Android devices, demands ransom

It's the first Android ransomware threat with file-encrypting abilities, researchers from ESET said

ISPs should quarantine infected computers, researchers say

Forcing users to clean their infected computers on an ongoing basis would be more disruptive to cybercriminals than botnet takedowns, some security researchers say.

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Phishing campaign touts Heartbleed removal tool

The program attached to the emails is actually a keylogger, according to Trend Micro.

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How to protect yourself against Gameover Zeus and other botnets

Government agencies and private companies cooperated to take down a widespread malicious botnet. But others will inevitably replace it. Here are some tips to defend yourself.

Attack of the clones: detect fake antimalware with these tips

Attackers are planting fake antimalware apps in popular mobile app stores, but they're not hard to spot if you know what to look for.

Spam: Earn $1,000,000

New 'malvertisements' need to be stopped now, Senate report says

The online ad industry should offer better protections against malware-ladedn ads that can threaten your computer without your knowledge, the U.S. Senate says.

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Avast: Websites loaded with PC-locking ransomware visited millions of times each week

Avast's user base has landed on websites hosting ransomware more than 18 million times over six weeks

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Adobe patches actively exploited vulnerability in Flash Player

The vulnerability was used in attacks against users in Syria, but will likely see wider exploitation, Kaspersky Lab researchers said.

Malware virus

DHS warns against using Internet Explorer until bug is patched

The Department of Homeland Security's US-CERT division advises using an alternative web browser until an official IE update is available.

Mac OS X

Apple users put at risk by 3-week delay between OS X and iOS patches, researchers say

IOS users were kept vulnerable for three weeks to known security issues previously patched in Safari for OS X, a former Apple employee said.