If your account is compromised,one of the first things you should do is…

Changing your password immediately is the most critical first step when your account is compromised. This action revokes access for the unauthorized user, preventing further malicious activity like posting spam, sending DMs, or changing account settings. While closing your account might seem like an option, it's a drastic measure that should only be considered after attempting to regain control, as it deletes all your content and connections. Sending a DM to Twitter Support is a good follow-up step, but it won't stop the immediate unauthorized access; changing your password does.