
According to
a report by security researchers, a form of detrimental ransomware which is called CryptoLocker has now infected about 250,000 PCs significantly. The first version of CryptoLocker ransomware surfaces in September 2013, which originally propagates through legitimate email attachment such as ZIP files or sponsored links. Later with updated attributes, CryptoLocker virus could be delivered by malicious websites or packaged with some pirated or copyright applications. When users click on such kind of malign resources, the CryptoLocker ransomware could be installed and activated on compromised machine forcibly. Different from common ransomware, the CryptoLocker virus will not only simply restrict the access to a victom’s computer but also encrypt certain types of files stored on local and mounted network drives with the aid of RSA public-key cryptography.