We've all done it: clicked "Save" when the browser offers to remember a password. It's quick, simple, and saves us a lot of headaches. But behind this convenience lies a vulnerability that cybercriminals are increasingly exploiting.
The Invisible Danger: The Threat of "Infostealers"
Beyond the risk of someone physically using your computer, there is a much more insidious threat: infostealers.
These are sophisticated malicious software designed to infiltrate your system without your knowledge. Their mission is simple but devastating:
- Extract your credentials stored in your browser's database.
- Steal your session cookies, which allows hackers to log in to your accounts without even needing your password or two-factor authentication.
- Recover your banking information and remote access.
These data are then sold in batches on the dark web, fueling a rapidly expanding cybercrime black market. By leaving your passwords in your browser, you are virtually leaving your keys "under the doormat."
Practical Guide: How to Clean Up Your Passwords
🌐 Google Chrome
- Click on the three dots (⋮) in the top right corner.
- Go to Settings > Password Manager.
- To view a password, click on the eye icon (your session code will be required).
- To delete, select the site and click Delete.
🟦 Microsoft Edge
- Click on the three dots (⋯) and open Settings.
- Go to Profiles > Passwords.
- Select the accounts and click Delete to erase the login.
🦊 Mozilla Firefox
- Open the main menu and select Passwords.
- Browse the list and click Delete for each outdated or sensitive account.
- Alternatively, go to the Options menu (Windows) or Settings (Mac), via the 3 superimposed lines icon, click on Privacy & Security in the left column, then go to the Logins and Passwords section in the center, further down. Then click the "Saved Logins..." button.
🍎 Safari (Mac and iPhone)
- Go to Settings (or Preferences) then Passwords.
- Unlock with Face ID, Touch ID, or your passcode.
- Delete saved entries.
When is it urgent to delete your passwords?
It is advisable to clean up immediately if:
- You are using a shared or public device.
- You have stopped using a service or website.
- You suspect your device has been exposed to a suspicious link (risk of infostealer).
- You want to migrate to a more secure solution.
Our tips for maximum security
To better protect your accounts, adopt these habits:
- Opt for a dedicated password manager: Protection like F-secure Total has a local vault that encrypts your passwords much more robustly than browsers.
- Enable two-factor authentication (2FA): This is your essential second line of defense.
- Perform regular cleanup: Keep only what is strictly necessary and delete access to sites you no longer visit.
Conclusion
Knowing how to manage your passwords is essential to keeping control over your personal data. By regularly checking your saved credentials and understanding the risks associated with infostealers, you significantly reduce your chances of being the next victim of a hack.
And you, have you already checked how many passwords are currently dormant in your browser?
