According to some reports this breach may have been averted had Fannie Mae terminated Makwana's network access immediately after firing him.
Last year, Terry Childs, a San Francisco computer engineer was charged with masterminding the hijacking of the city's network when he allegedly refused to allow other administrators to get into the system; locking down law enforcement records and payroll documents.
In another 2008 incident, 21 year old David Everett, a tech support person at Wand Corporationdecided to turn to cybercrime to seek revenge on his former employer after he was laid off. Breaking into the network, Everett allegedly planted three malicious files on 1000 servers in an attempt to bring the system down. Although he did get into the system, he only managed to crash 25 computers before the company was informed of the attack by concerned customers. Earlier this year, Everett pleaded guilty to computer hacking charges and now faces 10 years in prison.
Clearly, corporations must begin to proactively protect themselves against insider cybercrime."