Worryingly, the data has been posted for free on a hacking forum — featuring users' email addresses, Twitter handles and follower counts.
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Hackers have stolen the information of 235 million Twitter users — amid fears that crypto-focused accounts may be a prime target for cybercriminals.
Alon Gal, the co-founder of the cybercrime intelligence company Hudson Rock, discovered the hack and warned: "This is one of the most significant leaks I've seen."
Worryingly, the data has been posted for free on a hacking forum — featuring users' email addresses, Twitter handles and follower counts.
Gal fears that hackers will primarily target Crypto Twitter accounts, meaning those with .eth in their name could be especially vulnerable.
High-profile accounts with a large number of followers may also be in the crosshairs of malicious actors, as well as so-called "OG" accounts with good usernames.
But given how so many Crypto Twitter users are anonymous, there's also a real fear that they could be "doxxed" — especially if the email address they used to create an account contains their true identity.
According to Gal, this database isn't only going to be advantageous for hackers, though:
"It goes without saying that agencies around the world will use this database as well to further harm our privacy."
This is the latest setback for Elon Musk since he took over Twitter in late October, with users recently agreeing in a public poll that he should step down as CEO.
It's highly possible that the hack happened before his $44 billion deal to buy the social network was finalized.
Nonetheless, a leak of this magnitude has the potential to result in hefty fines from regulators in both Europe and the U.S.
