Key Takeaways
The ChatGPT & Claude Era is OVER (Perplexity Won)
- ChatGPT, Claude, and Perplexity all let you view and terminate active sessions from account settings
- ChatGPT and Perplexity support multi-factor authentication; Claude uses email-based login links instead
- Use unique passwords stored in a password manager and enable MFA wherever available
AI platforms store your prompts, uploaded files, and conversation history. If someone breaks into your ChatGPT, Claude, or Perplexity account, they get all of it. Here's how to check whether an intruder is logged in right now and what to do about it.
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All three platforms let you view active sessions, though the steps differ. Before anything else, the basics: use a unique password stored in a password manager and turn on multi-factor authentication (MFA) wherever it's offered. ChatGPT and Perplexity support MFA. Claude skips passwords entirely, sending a login link to your email instead.
How to check active sessions in ChatGPT
Open ChatGPT in your browser. Click your username in the bottom-left corner, then go to Settings → Security and Login → Active Sessions. You'll see a list of every device currently logged into your account.
Spot a device you don't recognize? Hover over it and log it out. You can also hit "Log out all" to terminate every session at once.
To change your password afterward, log out of your account first. Then click Log in on ChatGPT's homepage, enter your email, and select Forgot password → Continue. ChatGPT emails you a six-digit code. Enter it, click Continue, and set a new password. The email also contains a direct "reset your password" link if you prefer the official flow.
How to check active sessions in Claude
Claude works differently. Open it in your browser, click your username in the bottom-left corner, then Settings → Account. Your active sessions appear there.
Hover over any session you don't recognize, click the three-dot menu on the right, and select Log out or Terminate. If you want to nuke everything, click "Log out of all devices."
There's no password to reset because Claude never asks for one. When you log back in, Anthropic emails you a link. Click it, and you're in. This model trades the risk of a stolen password for the risk of a compromised email account, so keep your email locked down.
Related Anthropic security feature for Claude users
How to check active sessions in Perplexity
Perplexity doesn't show you a session list. If you suspect a breach, the only option is a clean sweep.
- Open Perplexity in your browser.
- Click your username in the bottom-left corner, then All settings.
- Select Sign out of all sessions, then Confirm.
To log back in, enter your email. Perplexity sends a six-digit code or a direct sign-in link. Either gets you in.
What to do after you've cleared sessions
Logging out suspicious devices is step one. Step two is making sure they can't get back in.
- Enable MFA on ChatGPT and Perplexity if you haven't already.
- Check that your email account itself has MFA enabled. Claude relies on email for login; if your inbox is compromised, so is Claude.
- Use a password manager to generate a unique, random password for every AI service you use.
- Audit any third-party integrations or API keys tied to these accounts.
AI chat histories can contain sensitive business data, code snippets, and personal information. A breach here isn't just an inconvenience.
Logicity's Take
The security gap here isn't dramatic, but it's real: Perplexity offers no session visibility at all, and Claude's passwordless model shifts the weak point to your email provider. For teams using these tools for work, that's worth noting. If you're evaluating AI assistants for enterprise use, factor in the authentication model alongside the model's capabilities. ChatGPT's MFA support edges it ahead on this front.
Alternative AI platform for enterprise consideration
Frequently Asked Questions
Does Claude support multi-factor authentication?
No. Claude uses passwordless login via email links instead of passwords and MFA.
Can I see which devices are logged into my Perplexity account?
No. Perplexity only lets you sign out of all sessions at once; it doesn't display individual devices.
How do I reset my ChatGPT password?
Log out, click Log in, enter your email, select Forgot password, and follow the code or link sent to your inbox.
What should I do if I suspect my AI account was hacked?
Immediately log out all sessions, change your password (if applicable), enable MFA, and check your email account security.
Need Help Implementing This?
If your team needs help auditing AI tool security or setting up enterprise authentication policies, reach out to us at Logicity for guidance.
Source: TechCrunch / Lorenzo Franceschi-Bicchierai
Huma Shazia
Senior AI & Tech Writer
Produced with AI assistance and reviewed by the Logicity editorial team. Learn more in our Editorial Policy.
