Three Ways to Check If Someone Else Is Logged Into Your AI Account

The Blind Spot in AI Security

At DailyTechWire, we've tracked the rapid adoption of generative AI tools across Asia and beyond. What we've noticed: while enterprises obsess over data leakage and model security, individual users often overlook a simpler risk - unauthorized access to their own accounts. ChatGPT, Claude, and Perplexity now handle everything from confidential research queries to draft contracts, yet many users have never checked which devices are logged into those services.

The good news is that each platform offers session management features. The less good news is that they're buried in different corners of the interface, and not all offer the same level of control. We walked through each one to show you exactly what to look for.

What You Should Do Before Anything Else

Before diving into session logs, two foundational practices will block most account takeover attempts. First, use a unique password for each AI platform, stored in a credential manager. Password reuse remains the single biggest vulnerability; a breach at an unrelated service can hand attackers the keys to your ChatGPT history or Claude workspace.

Second, enable multi-factor authentication wherever it's offered. ChatGPT and Perplexity both support MFA, requiring a second credential even if someone steals your password. Claude takes a different approach by skipping passwords altogether, sending a login link to your registered email address each time. That design shifts the authentication burden to your email provider, so securing that inbox becomes paramount.

With those baselines in place, session auditing becomes your early-warning system. Here's how each platform handles it.

ChatGPT: Granular Session Control

OpenAI surfaces active sessions through the settings menu. Open ChatGPT in a browser, click your username in the lower-left corner, navigate to Settings, then Security and Login, and select Active Sessions. You'll see a list of every device currently signed in, including approximate location and device type.

If you spot an entry you don't recognize, you can terminate that single session. Alternatively, the Log Out All button forces every device offline at once, a useful reset if you suspect compromise but aren't sure which session is rogue.

Password changes require a logout first. From the login screen, click Forgot Password, enter your email, and OpenAI will send a six-digit code. Enter that code, set a new password, and you're back in. It's a deliberate friction, designed to prevent an attacker already inside your account from locking you out by changing credentials on the fly.

Claude: Email-Based Authentication With Fewer Levers

Anthropic's approach removes passwords from the equation. When you want to log in, you provide an email address, and Claude sends a magic link. Click it, and you're authenticated. That design eliminates password reuse and brute-force attacks, but it also means your email account is the single point of failure.

To review active sessions, click your username, go to Settings, then Account. The Active Sessions list appears there. Hover over any session, click the three-dot menu on the right, and choose Log Out or Terminate. You can also clear all sessions at once with Log Out of All Devices.

Because there's no password to rotate, your remediation options are simpler. If you suspect unauthorized access, terminate all sessions and ensure your email account is locked down with MFA and a strong, unique password. From there, request a new login link and you'll be the only one back inside.

Perplexity: Session Management Without Visibility

Perplexity offers the bluntest tool: you can log out of all sessions, but the platform doesn't show you which devices are currently authenticated. That lack of visibility means you can't selectively remove a suspicious entry; your only option is the nuclear one.

To do that, click your username in the lower-left corner, select All Settings, then Sign Out of All Sessions and confirm. You'll be kicked out along with everyone else. To log back in, enter your email address. Perplexity will send a six-digit code; enter it on the website or click the Sign In button in the email.

This all-or-nothing design is faster to implement but less informative. If you're auditing regularly, you won't know whether an unauthorized session existed in the first place. It's a trade-off that favors simplicity over granularity.

Why Session Auditing Matters Now

Generative AI platforms store conversation histories that often contain sensitive context: business strategy drafts, legal questions, medical research, competitive intelligence. Unlike a social media account, where the damage might be reputational, a compromised AI account can leak proprietary information or allow an attacker to impersonate you in shared workspaces.

We've also seen a uptick in credential-stuffing attacks targeting high-value SaaS accounts across Asia. Attackers take username-password pairs from old breaches and test them against platforms that didn't exist when those credentials were stolen. AI services are relatively new, which means many users haven't yet rotated credentials or enabled MFA specifically for these tools.

Session auditing won't catch every intrusion, but it's a low-effort check that surfaces the most common attack vector. If you see a login from a city you've never visited or a device you don't own, you know to act immediately.

The Limits of Self-Service Security

None of these platforms yet offer the kind of forensic detail you'd find in enterprise identity systems. You won't see failed login attempts, IP address histories, or behavioral anomaly alerts. That's intentional; consumer-facing tools prioritize ease of use over exhaustive logs.

But the absence of those signals means you need to be more deliberate. Set a recurring reminder to review active sessions every few weeks. Treat your AI accounts with the same care you'd give to email or banking. And if you do find evidence of unauthorized access, assume your conversation history has been read. Rotate any credentials or sensitive details you discussed in those threads, and consider whether you need to notify colleagues or clients.

The platforms themselves will continue iterating on authentication. We expect more of them to adopt passkey support, which binds credentials to a physical device and sidesteps phishing entirely. Until that's universal, the session management tools already in place are your best defense - as long as you remember to use them.