The controversial dating website Ashley Madison has rolled out a new security feature that lets users hide their identities by pasting masks onto their profile pictures.

The site, which was created to facilitate infidelity, was hit by a massive hack last year that led to the leak of 32million user identities.

'We respect your need for discretion so we've added some tools to keep your identity a secret,' the company wrote in an announcement to its users touting the new mask-feature.

'We respect your need to have discretion so we've created some tools to keep your identity a secret,' Ashley Madison admins wrote in an announcement of the new feature.

Users can choose between a black bar, a black or brown mask, or three different levels of blurriness

Users can choose between a brown and a black mask or a black bar, or they can blur their profile pictures to various degrees.

Whether Ashley Madison users applaud the new feature is hard to tell, given that most try to keep their identity a secret - with or without masks.

But the move by the adultery site was quickly mocked on Twitter.

'The new mask option on Ashley Madison is an improvement on their first idea to add a fancy mustache and monocle,' wrote Twitter user Brad LaCour.

'"No honey, thats not me, that man is wearing a mask" ...very clever ashley madison,' tweeted a person with the username Meek.

Twitter users mocked Ashley Madison's new mask feature Thursday, with one saying it would make people look like a 'rapist cheater'