X’s Attackers Hit Servers Faulted for Lacking Key Protection

A cyberattack that brought down Elon Musk’s X targeted servers that were insufficiently protected from malicious traffic, according to cybersecurity analysts.

Users of the social media platform faced intermittent outages through Monday, which Musk blamed on a “large, coordinated group” or country waging a “massive cyberattack.” He didn’t provide any additional specifics to bolster his claim.

Jérôme Meyer, security researcher with Nokia Deepfield, a business unit within Nokia Oyj, said X had been targeted in a distributed denial-of-service attack, or DDoS, which floods a website with traffic and forces it offline. Meyer said he was able to track ...