The 49-year-old, who is currently busy shooting for his upcoming film "Bajrangi Bhaijaan", took to Twitter on Monday to show his concern over the issue by asking how many people are following him with fake identities.
"How many of u r on false identities n y," Salman tweeted.
In another post, he added: "Fan who is on a false identity using it to put another actor, friend, colleague down, is no fan of mine, don't like. Simple funda hai."
In the past few months, many big stars like Amitabh Bachchan, Kangana Ranaut and Yami Gautam have warned their fans over following their fake accounts on various social networking websites.
Meanwhile, the "Dabangg" star last month thanked Shah Rukh Khan and Aamir Khan for sharing the first look of Kabir Khan's "Bajrangi Bhaijaan".
Apart from "Bajrangi Bhaijaan", Salman will also be seen in Sooraj Barjatya's "Prem Ratan Dhan Payo", which will release on November 11, on the festival of Diwali.
