Mastodon says its flagship server was hit by a DDoS attack

Mastodon’s flagship server (mastodon.social) experienced a distributed denial-of-service (DDoS) attack that rendered the instance partially or wholly inaccessible for a period; Mastodon implemented countermeasures and restored access within a few hours. The report notes the attack pattern matches large-scale DDoS traffic, caused no reported data theft, and that the decentralized Fediverse architecture limited impact to other instances; the article also references a recent DDoS against Bluesky.