Ransomware
dates back to 1989 with the AIDS Trojan, which would modify the
autoexec.bat file and once a computer booted 90 times the malware would
begin to hide directories and encrypt the names of all files. It would
then prompt the user to renew their license and contact PC Cyborg
Corporation for $189.00 payment. This had to be sent to a P.O. Box in
Panama (Smith, 2002). Today the number of unique new samples of
ransomware malware is almost 250,000 in the first three months of 2013.
This has doubled from the first quarter of 2012. Even more troubling is
the reported number of infections. The visibility on infection data is
limited because client machines share detection only with McAfee. There
are two main reasons for the increased popularity of Ransomware: (1)
Cybercriminals have easy access to anonymous payment systems, such as
bitcoin; (2) There is a thriving underground market that helps with
pay-per-install services on pre-infected computers, such as Citadel.
Cyber criminals can also easily purchase ransomware kits, such as
Lyposit, from the underground markets (McAfee Labs, 2013a, p. 12).