CryptoLocker a relatively new family of virus/ransomware and is catching out a few too many unsuspecting victims.  It is based on extorting money from infected users who are tricked into running it. The victim receives an email with a password protected ZIP file often purporting to be from a courier company. CryptoLocker hijacks and corrupts users’ business documents and demands them to pay a ransom (with a time limit to send the payment).