X has been hit by a “massive cyber attack”, according to Elon Musk.

The boss of the social media platform said the attack was carried out “with a lot of resources”.

Mr Musk claimed that either a large coordinated group or a country was involved, or both.

He wrote on X: “There was (still is) a massive cyberattack against X.

“We get attacked every day, but this was done with a lot of resources. Either a large, coordinated group and/or a country is involved. Tracing…”

There have been outages across X this afternoon, with users unable to log in.

More than 40,000 reported no access to the platform, according to data from tracking website Downdetector.com

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