Some of the world's leading cryptographers are concerned about the increasing number of malicious programs that hold computers and mobile phones to ransom, in many cases by abusing the encryption algorithms they designed.
The group of attackers behind cyberintrusions at the White House and the Department of State last year used malware that bears strong similarities to cyberespionage tools suspected to be of Russian origin.
Security vendor Malwarebytes has flagged the Dell System Detect tool as a potentially unwanted application after older versions of the program were found to put computers at risk.
Ransomware authors continue improving file-encrypting programs and infection methods for Windows and Android, making these nightmarish attacks harder to avoid.
Facebook has partnered with antivirus firm ESET to offer users the ability to scan their computers for malware directly from inside the social networking site.
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