Celebrities who had their accounts hacked include Rihanna, Kate Upton and Kim Kardashian.
Google denied that it had failed to act speedily enough. As we reported yesterday, a letter from lawyer Marty Singer threatened Google with legal action.
But a statement from Google said it had deleted many photographs within hours of being notified and had also shut down the accounts of people who had posted the pictures.
Google said it responded to requests to down material within hours and relied on people telling them or filing Digital Millennium Copyright Act (DMCA) requests.
Google has taken down material on both YouTube, Blogger and Google+.