All you have to do is open a direct message. That’s it. But we can’t tell people not to open direct messages, as most people will be unknown to the user.
This attack affects those that use TikTok specificly, and the “security team” is working with affected accounts to regain access if necessary.
So far, the compromised accounts have posted nothing, but big celebreties and brands are affected.
From forbes: A Zero Day TikTok Hack Is Taking Over Celebrity And Brand Accounts is your article.