Paris Hilton is among the users targeted by the TikTok hack

TikTok claims cyber attacks targeting brands and celebrities including Paris Hilton and CNN

However, the video-sharing app told the BBC that a “very limited number” of accounts had been compromised.

It also said it is working with users to restore access to their accounts.

TikTok, which is owned by Chinese company ByteDance, did not share further details, such as how the cyber attack was carried out.

A TikTok spokesperson said Ms Hilton’s account had been targeted but had not been compromised.

The reality TV star, who has more than 10 million followers on TikTok, is an active user of the platform.

News broadcaster CNN’s account has been compromised.

“We are working closely with CNN to restore account access and implement enhanced security measures to protect their account moving forward,” TikTok said.

“We are committed to maintaining the integrity of the platform and will continue to monitor any unreliable activity.”

CNN did not immediately respond to a BBC request for comment.

The news comes as TikTok faces a ban in the US unless it is sold by its Chinese parent company.

TikTok has millions of users worldwide, but has faced questions about the security of user data and its ties to the government in Beijing.

It is also emerging as the new social media battleground for the US election.

Trump, who has amassed more than five million followers since launching his account on Saturday, said he was using “every tool available to speak directly to the American people.”

President Joe Biden is also using the platform to campaign for re-election in November, but he’s only picked up about 350,000 followers — far fewer than his rival.