A newer version of the Cryptowall ransomware has been delivered to unsuspecting Internet users via malicious ads shown on a considerable number of high-profile websites, including properties in the Yahoo, Match.com, and AOL domains.
A new variant of the Android malware Koler now spreads by text message and holds infected users’ phones hostage until a ransom is paid.
In the last few months, Trend Micro researchers have been following a malvertising campaign that ended up affecting almost exclusively US users at the beat of more than 113,000 per month.
A team of Finnish researchers has discovered that the files encrypted by the recently unearthed TorrentLocker ransomware can be decrypted without paying the ransom - if the user has at least one of the encrypted files backed up somewhere, and that file is over 2MB in size.
The first half 2014 saw an increase in online attacks that lock up user data and hold it for ransom – even on mobile devices, according to F-Secure.