Hackers reportedly stole the email addresses of more than 200 million Twitter users and published them on an online hacking forum.
The breach “will unfortunately lead to a lot of hacking, targeted phishing and doxxing”, Alon Gal, co-founder of Israeli cybersecurity monitoring firm Hudson Rock, wrote on LinkedIn.
Gal called it “one of the most significant leaks I’ve seen.”
Twitter has not commented on the report and Reuters could not independently verify if the data on the forum was authentic or not.
In December, Twitter brought back the #ThereIsHelp banner, a feature that pointed users to suicide prevention hotlines and other safety resources when searching for harmful content.
Reuters reported that the platform had removed the safety tool on orders from CEO Elon Musk.
Following the news, Ella Irwin, Twitter’s head of trust and safety, confirmed the removal but pointed out that it was temporary.
“We have been fixing and revamping our prompts. They were just temporarily removed while we do that,” Irwin told Reuters. “We expect to have them back up next week.”
On his part, Musk denied Twitter had ever removed the feature, stressing that the message is actually still up.
“This is fake news,” Musk wrote on Twitter, adding that Twitter does not prevent suicide.