Of the many viruses that haunt us, the virus that encrypts our own files so that we have to pay a ransom to recover them is one of the most annoying. While this could be considered as a malware like any other and enter our system through the normal channels such as an infected attachment or an infected download etc., it is necessary to ensure that the usual anti virus software is supplemented with specialized tools if any protect ourselves.
Some information on such anti cryptolocker tools are available here.
Sophos Cryptolocker removal tool
Naavi
