There's a destructive malware threat on the loose that calls itself "CryptoLocker."
It's what's known as ransomware, because that's what it does: holds your files to ransom.
Paul Ducklin tells you what you need to know...
The data-kidnappers are demanding $4,000 to release thousands of patient records belonging to the Miami Family Medical Centre on Australia's Gold Coast.
Many of you have been asking us about the Reveton ransomware, which claims that the FBI has fined you, and locks you out of your PC until you pay up.
Learn what it looks like, and what to do if you or one of your friends and family encounter it...