Bluesky DDoS Attack Sparks 24-Hour Outage as Iran-Backed Hackers Claim Credit

Bluesky is once again picking up the pieces after a disruptive cyberattack knocked its social network offline for a full day, and the timing is raising fresh questions about who is targeting the platform and why. The company confirmed that the latest Bluesky DDoS attack flooded its servers with junk traffic for roughly 24 hours, forcing engineers to scramble and upgrade defenses in real time. It’s the second major incident of its kind this year, and security researchers say the fingerprints look familiar.

Key takeaways

• Bluesky confirmed a day-long outage was caused by a distributed denial-of-service (DDoS) attack that flooded the platform with junk traffic over 24 hours.
• The company said it has upgraded its defenses and continues to monitor the situation, but did not share technical details.
• Security researchers in the IFIN public forum say Iran-backed actors have claimed responsibility for the attack.
• Iran has ramped up cyberattacks on U.S. businesses and critical infrastructure since the U.S. and Israel-led war began earlier this year.
• Bluesky suffered a similar large-scale DDoS attack in April, and it remains unclear whether the two incidents are connected.

Bluesky’s August 2026 Outage Caused by a DDoS Attack

The disruption that left Bluesky users locked out was not a technical glitch but a deliberate assault on the platform’s infrastructure. In a post on Monday, the company confirmed the outage stemmed from a distributed denial-of-service attack that had been underway for the previous 24 hours.

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