An AI chat account holds a record of what you asked, so protect the login like email. Use a unique password of at least 16 characters from a password manager, turn on multifactor authentication, keep your apps updated and review where you are signed in. These are CISA's basics applied to one account.
Why the account matters
All the privacy settings in the world do not help if someone else signs in as you. A taken-over chat account exposes history, shared links, uploaded content and any connected apps.
Passwords
CISA's page on strong passwords advises:
- At least 16 characters. Longer is stronger.
- A random mix of letters, numbers and symbols, or a passphrase of 4 to 7 unrelated words.
- A different password for every account, so one breach does not expose the others.
- A password manager to store and generate them. You remember one strong master password. Built in browser managers are free.
Multifactor authentication
CISA says to turn on MFA, which requires more than a password to sign in, such as a code or a fingerprint. It recommends enabling it for email, social media and financial accounts. Your email matters most, since password resets go there, and it is worth protecting your AI account the same way. Check the account's security settings to see which methods it offers. We did not verify every vendor's options for this post.
Updates
CISA says not to dismiss update alerts, to install updates especially for web browsers and antivirus software, to apply critical updates immediately and to turn on automatic updates. Your chat app and browser are the doors to your account, so keep both current.
Account habits
- Use a password manager entry for each chat tool.
- Never log in through a link in an email or message. Type the address or use a bookmark.
- Sign out on shared or borrowed devices.
- Do not share one login among family members. Separate accounts keep histories, settings and shared links separate.
- Delete or unshare things you no longer need. Our posts on Claude and Gemini show how.
- If you stop using a tool, export what you need and delete the account.
What to do if you suspect a takeover
Change the password from a clean device, enable MFA, look at active sessions if the product lists them, unshare links and watch your email for notices. If you reused the password elsewhere, change it there too.
Quick check
How long should a password be?
CISA says at least 16 characters, and longer is stronger.
Do I need to remember every password?
No. A password manager stores them. You remember one strong master password, which can be a long passphrase.
Sources
- Use Strong Passwords (CISA Secure Our World)
- Update Software (CISA Secure Our World)
- Deleting Claude accounts (Anthropic Privacy Center)
Last reviewed: 19 October 2026.
