I received this pop-up:

'The page at says:


Talktalk Communications Limited user!
You have been selected as the winner of today's FREE iPhone 6S, £500 Tesco Gift Card or Samsung Galaxy S7!

Please click OK to claim your prize before we give it to someone else!
Another TalkTalk tech support scam number telling people they have viruses on their PC - +442088888778

Number billable as geographic number
Country or destination United Kingdom
City or exchange location London
Original network provider* BT
*) Number portability has not been taken into account