I accidentally clicked a link on iphone twitter. It said my SMS and Emails are now monitored. Help!

I was on twitter from my iphone and stupidly clicked a link. A page came up saying my phone was now hacked and SMS,e-mails and such are now being watched. I immidently exited out of the page. cleared history, cookies, turned my phone off then back on. Am I at risk? Should I restore my phone?

This phone was purchased through apple, so it's not jail broken. Am I just paranoid? I hope I am.