With 2FA enabled, you can disable email verification for withdrawals. You should have received emails confirming this behaviour however. Most probably the attacker has simply deleted all incriminating communications from your email. He most likely knows your password, so you want to change that to something secure and unguessable asap. Also, make sure to use a reputable email service like gmail, not any small-time operation.
hi yefi. even if i had frozen my account at the point i spoke to you. it wouldnt have made any difference.but thank you for your help a few days ago. the money had already been taken at that point. i spoke to you the day after the money was stolen. its just sickening that someone can just steal your coins so easily. but one things for sure now that i know about 2fa i will make absolutely sure that any future coins are as secure as possible. i had only been on poloniex about three days at that point. had never heard of 2fa as i had never before had any need to use it. when i tried to sign in with my mobile phone after the battery had died on my ipad. that was when i had a problem getting back in. i just assumed that i had not recieved a text that polo had sent to my mobile phone. thats what i initially thought 2fa was. as previously with coinbase they would have sent a text.
i did run a virus scan on both my phone and my ipad. and no viruses where found on either device.