Isik Mater, the director of research at NetBlocks, a company that tracks global internet connectivity, told NBC News that X had suffered intermittent outages since Monday morning. While establishing a DDoS attack with certainty can be difficult, Mater said, Musk’s claim was plausible.

Tens of thousands of users reported issues using Musk’s platform, formerly known as Twitter, after what appeared to be an earlier outage.

Elon Musk’s X social media platform is experiencing multiple outages. Downdetector.com says more than 28,000 users reported an outage at 11:28 a.m.