1-City of London financial institutions have paid huge sums to international gangs of sophisticated "cyber terrorists" who have amassed up to 400 million pounds worldwide by threatening to wipe out computer systems.
Banks, broking firms and investment houses in America have also secretly paid ransom to prevent costly computer meltdown and a collapse in confidence among their
customers, according to sources in Whitehall and Washington.
http://www.nando.net/newsroom/ntn/info/060596/info50_24099.html
2-The most spectacular and well-known example was probably in 1995, when Citibank was hacked by Russian hackers, led by the 24 year-old Vladimir Levin. They were arrested while trying to transfer over $10 million. In February 1997, the infamous CCC (Computer Chaos Club) of Germany revealed how to abuse ActiveX controls (a Microsoft technology and source of numerous security vulnerabilities) to steal money from one account and put it into another.
http://www.infowar.com/hacker/99/hack_101399a_j.shtml
3-THE Law Commission has acknowledged that it is not against the law for a hacker to break into a New Zealand bank's computer system and transfer funds into his or her own bank account.
In a report on computer crime, the commission says that under section 220
of the Crimes Act 1961 it is not against the law to steal something intangible.
http://www.infowar.com/hacker/99/hack_051799b_j.shtml
4-he Financial Services Authority (FSA), the UK's financial services regulator, has told banks that they must take more care with their online security.
The warning comes after the FSA found inadequacies in defense systems against hackers on the sites of several unnamed UK Internet banks.
http://www.infowar.com/hacker/00/hack_062000a_j.shtml