Micro blogging site, Twitter has dismissed suggestions that several thousand accounts on the site have been hacked by hackers.

Some hackers claiming to be associated with hacktivist group Anonymous said that they have gained access to 55,000 Twitter accounts and have published details belonging to the users. Twitter said that the claim is largely bogus and added the group usually posts information or username and password information of the spam accounts that have been suspended.

A user published five very long pages of allegedly Twitter usernames and passwords on the text storage site, Pastebin on Monday. The alleged breach of accounts was reported on Tuesday sparking rumors that hackers have been able to penetrate Twitter's security systems.

The report by Airdemon said that celebrity accounts were among those hacked and also cited a company source confirming the breach. A Twitter representative rubbished all reports of a breach on Tuesday afternoon but said that the company is investigating the situation.

The company said that the list published on Pastebin contained 20,000 duplicates and information for many spam accounts that have already been suspended. Twitter has already end password resets to accounts that may have been affected and has encouraged other users to change passwords.