For 25 years Visa operated as a humdrum service bureau for banks, with a bureaucracy as hidebound and inflexible as its computer system.

FORBES: Companies & Strategies

When she told customer service of the issue they could not find any record of the two CDs in the computer system.

FORBES: A Snitch In Time Can Save Employers a Lot of Money

The courts have yet to decide who is liable if a computer system with lax security is used to launch a denial-of-service attack, but a number of lawsuits are pending.

ECONOMIST: Forensic computing studies the anatomy of computer crime