change their passwords.
Ubisoft's Uplay service, the system housing customer data, is never mentioned specifically. Last year, a browser exploit was identified with the Uplay plug-in that endangered users by allowing certain malicious websites access to player computers.
Ubisoft introduced Uplay back in 2009 as a cross-game interface allowing for digital distribution and social services across Ubisoft games. In February, Ubisoft added third-party games from studios including EA, Warner Bros. and Focus Home Interactive.
Update: A Ubisoft representative reached out to say, "The attack did not originate via any Uplay services, the intrusion targeted some of our internal online systems." We've altered the story to reflect this.