Users took to Twitter and Reddit to complain about being locked out of their PlayStation accounts.
Sony has rebutted customer suggestions that the PlayStation network has been hacked.
As users took to Twitter to tell the official PlayStation account that they had been hacked, Sony advised users to look for unusual activity on their accounts and be wary of potential phishing scams.
There were also multiple posts about the issue on the PlayStation 4 subreddit on the website Reddit.
In a statement to the BBC, Sony said: “We routinely monitor for irregular activity, and if such activity is detected, we may sometimes reset passwords of affected accounts to protect users and their account information.
“We strongly advise users to keep a close eye on their accounts for unusual activity and avoid entering your username/password into unofficial sites looking to phish credentials based on fake promotions.”
Sony has also been responded directly to affected users on Twitter.
Reports of potential hacks first appeared in November, when users complained of being locked out of their accounts.
There were also complaints that money had been taken from people’s bank accounts and placed in their PlayStation Store wallets.
PlayStation was hit by a breach in 2011 which included the leaking of around 77 million account details to hackers.
Sony was also targeted in the infamous hack of Sony Pictures in 2014 which led to employee information being stolen.