On Wednesday, Activision Blizzard said on Twitter that its Battle.net service was under assault by a Distributed Denial of Service (DDoS) attack. After a little more than an hour, announced that the attacks it was tracking were over.

The business warned that the assault “may result in excessive latency and disconnections for some players” in a tweet issued at 7:11 p.m. ET from the @BlizzardCS Twitter account. The initial tweet described a single attack, while a second one, issued at 8:29 p.m. ET, stating that things had concluded, cited many strikes.

Users on Downdetector reported troubles with Overwatch, World of Warcraft, Call of Duty (though the actual title isn’t given), and Diablo III.

In November, Battle.net was subjected to DDoS assaults that created similar issues for people trying to play games.