The FBI is reportedly offering a tidy $3 million reward for anyone who helps them catch Russian hacker Evgeniy Mikhailovich Bogachev, the alleged mastermind behind GameOver Zeus.

Security researchers at Blue Coat say that they have seen the CryptoWall ransomware being spread via ads.yahoo.com – a major online advertising network run by, yes you guessed it, Yahoo.

Boffins have created a free service to help anyone has fallen foul of the notorious CryptoLocker ransomware that encrypts computer files and demands a ransom be paid for the decryption key.

Have you checked your computer for the GameOver Zeus malware?

British police say you only have until midnight on Tuesday. So you might want to get a move on…

Do you know what ransomware is? Do you know a filecoder from a lockscreen?

Become more clued-up about the ransomware threat, and ensure that your systems are properly protected, by reading my latest article on the We Live Security blog.

Have you seen this man?

If so, the FBI would like to talk to him about cybercrime.

The US claims that Russian citizen Evgeniy Mikhailovich Bogachev is the leader of the gang that spread the GameOver Zeus (“GOZ”) malware and Cryptolocker ransomware, and ran botnets that hijacked up to one million computers around the world.

Boffins at security firm Bromium have discovered that the CryptoDefense malware has been spread via boobytrapped webpages, in an attempt to make more money for its creators.

Once again, turning off Java could help protect you.

As if CryptoLocker wasn’t causing enough problems by infecting and locking thousands of innocent users’ Windows computers, security researchers have discovered a new variant of the ransomware that takes its propagation to a new level.

Security researcher Sorin Mustaca identifies some of the biggest security threats of 2013, and what you need to do to protect against them.

The UK and US authorities have issued alerts about the CryptoLocker ransomware, infecting Windows computers.

Here’s what you need to know.