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Blizzard recovered from massive DDoS attack that crippled Battle.Net

A Distributed Denial of Service (DDoS) attack on Blizzard's Overwatch, Warzone, Hearthstone, and Diablo servers left players unable to log in or play games for nearly an hour.
In the early hours of 25th November, Blizzard America's Customer Support Twitter account announced that they were experiencing Distributed Denial of Service (DDoS) attacks, causing widespread server connectivity issues with their Battle.Net launcher.

The attacks reportedly lasted almost an hour long and resulted in players being unable to access Overwatch, Warzone, Hearthstone, or Diablo's online features.

Blizzard recovered from DDoS attack

Blizzard first announced that they were investigating an issue affecting their authentication servers following an influx of reports regarding failed or slow login attempts at around 00:17 AM CET on 25th November.

Blizzard subsequently confirmed that they were "experiencing a DDoS attack" and were actively working to mitigate the issue a few minutes later. Accordingly, the DDoS attack was reportedly resulting in "high latency and disconnections for some players."

For those unfamiliar with the term, DDoS attacks are coordinated malicious attacks on targeted servers whereby an attacker (or group of attackers) flood a machine or network resource with traffic to disrupt its service or functioning.

During the attack, players were met with an in-game "Breaking News" notification informing players attempting to log in of the attack.

blizzard ddos attack Overwatch Call of Duty Warzone Hearthstone Diablo
Blizzard warns players about an ongoing DDoS attack via in-game notification. (Picture: The Verge / Richard Lawler)

Players that managed to log in to Battle.net were unfortunately met with a lengthy waiting queue, further warning the players of unusually high server traffic. Fortunately, after about 1 hour, Blizzard announced that the DDoS attacks had ended.

Blizzard did not provide any further information regarding the attack's origins, so we are left in the dark regarding whether the DDoS attack was an isolated incident for formed part of a larger, organised protest.

However, thankfully, with the DDoS attack now over, players can resume their regular gameplay. We will provide further updates regarding this attack should more information become available.

 

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Featured image courtesy of Activision Blizzard.