Twitter has substracted millions of suspicious followers again after first removing them in July this year.
As a result of the company's crackdown on fake users, singer Katy Perry lost about 861,000 followers, according to social measurement firm Social Blade and Twitter’s own account lost 2.4 million followers.
According to Twitter, it discovered a bug where some of these accounts were briefly added back, which led to misleading follower counts for “very few accounts."
In July, Twitter said: "As part of our ongoing and global effort to build trust and encourage healthy conversation on Twitter, every part of the service matters. Follower counts are a visible feature, and we want everyone to have confidence that the numbers are meaningful and accurate.
"Over the years, we’ve locked accounts when we detected sudden changes in account behavior. In these situations, we reach out to the owners of the accounts and unless they validate the account and reset their passwords, we keep them locked with no ability to log in. This week, we’ll be removing these locked accounts from follower counts across profiles globally. As a result, the number of followers displayed on many profiles may go down."
The latest move was prophesied by Samuel Scott, a columnist for The Drum, who predicted a new wave of global social media regulation last month.