Hackers launched a wave of sophisticated attacks on Wall Street firms in recent days, targeting information systems at major money managers, according to people familiar with the matter. Attackers also attempted to infiltrate the information systems at other major hedge funds including Millennium Management, Two Sigma Investments and Citadel as well as several private equity firms as part of the assault, the people said. “Before they could attack 50 entities in a targeted attack, now they can do 1,000,” Paul said. That was in response to the increasingly sophisticated cyber and fraud threats that were being directed at financial services firms. (Updates to include Millennium among targeted funds in third paragraph)