Information on 3,500 customers may have been hacked for personal credit info. http://s.wsj.net/message/dowjonesletter-20151009.pdf Source: http://www.engadget.com/2015/10/09/wsj-customer-database-hack/
Russian Hackers suspected for the intrusion of Dow Jones systems http://securityaffairs.co/wordpress/41156/cyber-crime/russian-hackers-dow-jones.html