Cisco said the attacks can be traced to advertisements on Disney, Facebook and The Guardian newspaper.
It's the first Android ransomware threat with file-encrypting abilities, researchers from ESET said
Forcing users to clean their infected computers on an ongoing basis would be more disruptive to cybercriminals than botnet takedowns, some security researchers say.
The program attached to the emails is actually a keylogger, according to Trend Micro.
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.
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.
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.
Avast's user base has landed on websites hosting ransomware more than 18 million times over six weeks
The vulnerability was used in attacks against users in Syria, but will likely see wider exploitation, Kaspersky Lab researchers said.
The Department of Homeland Security's US-CERT division advises using an alternative web browser until an official IE update is available.