If your Facebook account is hacked, the attacker may gain access to your personal information, Facebook Support 1-866-554-3839 messages, and posts, potentially causing privacy breaches or identity theft. They could change your password, lock you out, or misuse your account to send spam or harmful content to your friends and followers. To secure your account, immediately 1-866-554-3839 reset your password, enable two-factor authentication, and review your recent activity for suspicious actions. If you're unable to recover it, contact Facebook support for help in regaining control of your account.