DDoS incidents
DDoS incidents, most recently reported first.
DDoS attack on Blizzard's Battle.net disrupts game access
Impact: Connection delays, login failures and disconnections across several games
On 12 November 2026, Blizzard's Battle.net suffered a DDoS attack, causing connection delays, login failures and disconnections across several games. Blizzard confirmed the attack and took steps to mitigate it, and around an hour after the attack began, the warning disappeared and users reported reconnecting. Further connection problems occurred that day, but the cause of the second disruption was not confirmed.
Related reports: 4 · last report →Students investigated over alleged disruption of Dongduk Women's University website
Impact: Alleged disruption of access to university websites and interference with operations
During protests against Dongduk Women's University's proposed transition to co-education in November 2024, participants were accused of disrupting university websites and interfering with operations through coordinated mass access. Police have summoned current students and graduates and are investigating their specific involvement in the alleged attack and the circumstances of the incident.
Read on MBC ↗Brazilian government IT provider Serpro faces record DDoS attacks
Brazilian government IT provider Serpro has experienced record distributed denial-of-service (DDoS) attacks over the past six months, including an attack on an unprecedented scale in early November. Serpro said Gov.br continued to operate, with no disruption or compromise. No causal link has been confirmed between the attacks and authentication failures reported on some government services over the same period.
Related reports: 3 · last report →DDoS attacks disrupt remote-backups.com’s Hamburg network
Impact: Disrupted access to the website, API and dashboard
On 5 November, remote-backups.com’s network in Hamburg, Germany, was hit by a UDP attack reaching 10.16 Gbit/s, followed by an HTTP/2 attack. Access to the website, API and dashboard was disrupted, and full access was restored the next day. No stored backup data was lost.
Read on remote-backups.com ↗DDoS attack disrupts Vivox signalling service for five minutes
Impact: Approximately five-minute disruption to the signalling service in Vivox's mtu1xp environment
A DDoS attack on 4 November disrupted the signalling service in Vivox's mtu1xp environment. The disruption lasted approximately five minutes, from 3:47 pm to 3:52 pm Korea Standard Time.
Read on Unity ↗Cyprus bank hit by DDoS attack lasting about 200 hours
Impact: DDoS attack lasting about 200 hours
A bank in Cyprus was hit by a DDoS attack lasting about 200 hours, or about eight days, in the third quarter of 2026. The name of the affected bank and the specific scale of service disruption have not been disclosed.
Related reports: 3 →DDoS attack on Dutch DigiD disrupts government services
Impact: Access and login problems for some users of DigiD and government-linked services
The Dutch public authentication service DigiD was hit by a DDoS attack, leaving some users unable to log in via the app and website or use government-linked services. The Tax Administration's online services also suffered access and login problems. Operator Logius confirmed the attack, reported it to the police and investigated, and later said services were restored and personal data was not put at risk.
Related reports: 3 · last report →Signs of DDoS attack on North Korean internet and state websites go offline
Impact: Outage of 40 North Korean state-run websites
North Korea's internet suffered outages, leaving 40 state-run websites inaccessible. A US network monitoring firm analysed a DDoS attack as the cause, citing large-scale traffic. The party behind the attack has not been identified.
Related reports: 9 · last report →DDoS attacks disrupt access to Moldovan government websites
Impact: Access delays and temporary unavailability of some government websites
Since early September, some Moldovan government websites have come under DDoS attacks, causing access delays and temporary unavailability. Moldova's Information Technology and Cyber Security Service took steps to reduce the impact of the attacks and restore services.
Related reports: 2 · last report →Massive DDoS attack disrupts Norway's public digital services
Impact: Disruption of major public digital and citizen-facing services in Norway
Norway's public digital services were disrupted by a massive DDoS attack. Pro-Russian hackers claimed responsibility for the attack. Major public-facing services were affected, and no specific recovery time has been confirmed.
Related reports: 4 · last report →Geto hit by DDoS attack, two-hour outage at peak hours
Impact: Two-hour outage of Geto's service
Geto was hit by a DDoS attack during peak hours. The attack caused a two-hour outage.
Read on 아이러브PC방 ↗DDoS attack disables 50 Waymo robotaxis
Impact: 50 robotaxis out of operation
Fifty Waymo robotaxis were put out of operation by a DDoS attack. The exact time of the incident and the recovery and response have not been confirmed.
Read on 포춘코리아 ↗DDoS attack on Daejeon university's course registration site inconveniences students
Impact: Inconvenience for students using the course registration site
The course registration site of a university in Daejeon was hit by a DDoS attack. As a result, students experienced inconvenience during course registration. The university's name, the date of the incident and the specific response measures have not been confirmed.
Related reports: 2 →DDoS attack on Pai Chai University slows course registration access
Impact: Delays in accessing course registration
Pai Chai University was hit by a DDoS attack that slowed access to course registration. The exact time of the attack, the extent of the delays, and the recovery and response have not been confirmed.
Read on YTN ↗Dysphoria botnet infects 200,000 IoT devices, launches DDoS of up to 4 Tbps
Impact: 200,000 IoT devices infected; DDoS attacks of up to 4 Tbps
As the Dysphoria botnet spread, 200,000 IoT devices were infected. DDoS attacks of up to 4 Tbps were launched.
Read on 데일리시큐 ↗Massive DDoS attack on Tempo news website
Impact: 24.9 million cyber-attacks
The Tempo news website was hit by a massive DDoS attack after reporting on corruption. The number of cyber-attacks was put at 24.9 million, while the specific damage to services and the response have not been confirmed.
Related reports: 2 →May 18 Memorial Foundation website disrupted by suspected DDoS traffic
Impact: Website access disruption
On 19 May 2026, signs of a suspected DDoS attack were detected on the press release board of the May 18 Memorial Foundation's website, with numerous IP addresses of unknown origin accessing it repeatedly. The website suffered access disruptions, and the foundation responded by blocking the repeatedly accessing IP addresses and applying rate limits. Police opened a preliminary investigation, and whether it was an attack and who was behind it are still being determined.
Related reports: 7 · last report →Denial-of-service attack knocks out Luxembourg's nationwide telecoms network for over three hours
Impact: Nationwide mobile, fixed-line and emergency communications down for more than three hours
In 2025, a nationwide telecoms network outage in Luxembourg cut off mobile, fixed-line and emergency communications for more than three hours. A denial-of-service attack exploiting undocumented behaviour in Huawei routers was revealed to be the cause. Crafted traffic caused the routers to reboot repeatedly.
Read on The Record ↗DDoS attack temporarily disrupts access to South Korean foreign ministry website
Impact: Temporary access outage on the ministry's website
On the afternoon of 17 April 2026, the website of South Korea's Ministry of Foreign Affairs suffered a temporary access outage due to a DDoS attack. A Russian hacker later claimed to have attacked the ministry and other government agencies in response to South Korea's support for Ukraine.
Related reports: 3 · last report →149 DDoS attacks hit Middle East infrastructure in three days
149Impact: 149 DDoS attacks on Middle East infrastructure over three days
149 DDoS attacks targeted Middle East infrastructure over three days. The attacks were attributed to retaliatory cyber-attacks by Iran; the individual organisations affected, the extent of service disruption and the response measures have not been confirmed.
Read on 보안뉴스 ↗