According to his official fanpage:

No need to follow fake accounts of Atif Aslam on Twitter anymore. The superstar is all set to take Twitter by storm. The management of Atif Aslam has been able to get the official profile of the rockstar verified from Twitter! Atif Aslam finally has an official presence on Twitter! Start following him now. If u notice,... Atif just tweeted something, follow him now!!!

http://twitter.com/itsaadee