Webdata alleged to contain the email addresses of more than 200 million twitter users is being given away for free on a hacker forum, reports say. Webhackers stole the email addresses of more than 200 million twitter users and posted them on an online hacking forum, a security researcher said wednesday. Webthe flaw allowed malicious actors to automate account lookups — entering email addresses and phone numbers en masse to see if they were associated with. It was an unprecedented attack on privacy, trust and security. But experts say the hackers could have caused far more damage.