Amazon-owned video game streaming service Twitch has told its users to change their passwords amid fears that the site has been hacked.
Twitch told its users that their names and phone numbers may have been leaked.
Twitch also said it had deleted passwords that had been encrypted and disconnected users' accounts from Twitter and YouTube.
But Twitch was criticized after it watered down its security and made users setting weak replacement passwords.
According to the BBC, Twitch said in an email to its users, "We are writing to let you know that there may have been unauthorized access to some of your Twitch user account information, including possibly your Twitch username and associated email address, your password (which was cryptographically protected), the last IP address you logged in from, and any of the following if you provided it to us: first and last name, phone number, address, and date of birth."
Twitch also said that it did not store or process full credit card information.
In September 2014, Twitch was acquired by Amazon.com for USD 970 million. Twitch had more than 55 million unique monthly viewers till last July.