Social networking site Bluesky has said its recent day-long disruption was caused by a distributed denial-of-service (DDoS) attack that flooded the site with junk traffic. The company confirmed the incident in a post on Monday, stating the attack had taken place over the previous 24 hours.
In the post, Bluesky said: “We have upgraded our defenses in response, and we continue to monitor the situation,” without disclosing further details. A spokesperson did not immediately respond to questions about the attack.
Security researchers discussing the attacks in the IFIN public forum report that Iran-backed attackers have claimed responsibility. Iran has increased its attacks on U.S. businesses and critical infrastructure since the start of the U.S. and Israel-led war earlier this year.
This is the latest large-scale DDoS attack to affect the site in recent months. In April, Bluesky was hit by a prolonged series of outages caused by a similar flood of web traffic. It is unclear if the attacks are linked.