Ransomware Trojan Cryptolocker has been unlocked.

Security Firms FireEye and Fox-IT have published a website where so far 500,000 victims can register for a free decryption key.

Cryptolocker encrypts all files on Windows computers and then prompts to make a substantial donation in order have the files released.
If the money transfer is not made within 72 hours, all files are permanently lost.