Though attacks represent a large source of data breaches, negligence and computer errors are behind the majority of compromised information.

But attacks are significantly more serious. In 2009, the average cost of mopping up after a record stolen through malicious activity was $215 per document. But data compromised due to corporate negligence or systems glitches cost just $154 and $166 per record to remedy, respectively.


Last updated July 22 2011: 10:59 AM ET
Join the Conversation
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.