Noel Biderman, chief executive of Ashley Madison’s parent company Avid Life Media, is stepping down.
The company will now be led by the existing senior management team until a new chief executive is appointed.
The adultery website, whose slogan is 'Life is short, Have an affair,' was hacked last month by a group called 'The Impact Team.'
Earlier this month, personal details of its members were revealed online following the hack.
In a statement, the company said: “This change is in the best interest of the company and allows us to continue to provide support to our members and dedicated employees. We are steadfast in our commitment to our customer base.”
It also said that it is “actively adjusting to the attack” on its site.