ABSTRACT
A cyber-attack against the American bank JPMorgan Chase was believed to have compromised data associated with over 83 million accounts, 76 million households, and 7 million small businesses. The data breach is considered to be one of the most serious intrusions into an American corporation's information system and one of the largest data breaches in history. The computer breach at JPMorgan Chase, the largest intrusion of an American bank to date, might have been thwarted if the bank had installed a simple security fix to an overlooked server in its vast network. Big corporations like JPMorgan spend millions, $250 million in this bank's case, on computer security every year to guard against increasingly sophisticated attacks like the one on Sony Pictures. But the weak spot at JPMorgan appears to have been a very basic one.
