(USA TODAY) -- A Russian hacker claims to have uploaded almost 6.5 million LinkedIn passwords, The Verge reports.
LinkedIn in says in a tweet that "Our team is currently looking into reports of stolen passwords. Stay tuned for more."
In its posting, The Verge, a technology-focused news publication, says the hacker claims to have uploaded 6,458,020 passwords.
The Verge says the claim was made by the unidentified hacker in a Russian forum.
"It's not clear if they managed to download the usernames, but it's likely that both have been downloaded," The Verge reports. "There is a possibility that this could be a hoax, but several people have said on Twitter that they found their real LinkedIn passwords as hashes on the list. Many of the hashes include 'linkedin,' which seems to add credence to the claims."
Naked Security, a blog from Sophos, reports that a file containing some of the hacked data has been posted on the Internet, and that hackers are working together to crack them.