CSIDB logo
Incident

Riot Games

Incident posture

Attack window
Aug 2016
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2026-01-31 11:10

Linked entities

Victim
Riot Games
Threat actors
1 actor
Sources
1 source

Timeline

Occurred
Aug 2016
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A hacker group known as PoodleCorp claimed responsibility for distributed denial-of-service (DDoS) attacks targeting Blizzard Entertainment and League of Legends servers, causing widespread service disruptions, latency issues, and login failures for players. Blizzard publicly acknowledged the attacks on its BattleNet services, confirming ongoing mitigation efforts, while Riot Games did not formally confirm the incident despite player reports of North American server outages. PoodleCorp, previously linked to attacks on Pokémon Go, Battle.NET, and YouTube channels, announced the attacks via Twitter and indicated plans to target additional gaming networks. Service interruptions subsided following the group’s cessation of attacks, though investigation into residual impacts continued.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

1 technique

Description

On August 2-3, 2016, hacker group PoodleCorp executed distributed denial-of-service (DDoS) attacks against Blizzard Entertainment and Riot Games' League of Legends North American servers, disrupting online services for both gaming platforms. PoodleCorp publicly claimed responsibility via Twitter, announcing they had shut down Blizzard servers in Europe and the United States along with League of Legends' NA infrastructure. The attacks coincided with widespread player reports of connectivity issues across Blizzard's Battle.net platform, affecting games including World of Warcraft. Blizzard's customer service team confirmed via multiple tweets that they were monitoring ongoing DDoS attacks against their network providers, which caused latency spikes and login failures throughout August 2nd and 3rd. By August 3rd, Blizzard reported the DDoS incidents had concluded but were investigating residual World of Warcraft server instability. League of Legends players simultaneously experienced outages in North America, though Riot Games did not publicly acknowledge a cyberattack, instead directing inquiries to their server status page which showed NA servers as offline during the incident period.

Blizzard maintained continuous public communication through their @BlizzardCS Twitter account, issuing four service updates within 24 hours that detailed attack monitoring, ongoing service degradation, attack conclusion, and subsequent recovery efforts. The company confirmed the attacks specifically targeted third-party network providers supporting their infrastructure. In contrast, Riot Games provided no formal statements regarding the NA server disruptions despite player complaints and PoodleCorp's claims, with customer support representatives declining to confirm the attack when contacted by media. PoodleCorp ceased attacks approximately 12 hours before media reporting concluded, tweeting their intention to target another gaming network. The group had prior notoriety for DDoS attacks against Pokémon Go, Battle.net, StreamMe, and high-profile YouTube channels. Service restoration timelines differed between companies, with Blizzard regaining full Battle.net functionality before Riot Games' NA servers came back online, though neither organization disclosed technical mitigation details or player impact statistics.

Sources

Sources available to members: 1 source.

CSIDB