By default, Google manages your encryption key, but it allows you to set up on-device encryption, which functions similarly to a zero-knowledge architecture. Your passwords are encrypted before being saved on your device, and you manage the key. Regardless of how the encryption works, Google uses AES, which is still the gold standard for security among password managers.
It was trivial to decrypt Chrome passwords previously, requiring little more than a Python script and knowledge of where the files are stored. But even there, Google has pushed the security bar up. App-bound encryption has invalidated those methods, and cracking passwords is far more involved than it used to be. Further, Google has integrated with Windows Hello. If you choose, you can have Windows Hello protect your passwords each time you log in by asking for your PIN or biometric authentication.
Other browsers aren’t as secure. Firefox, for instance, makes it clear that, although passwords saved in Firefox are encrypted, “someone with access to your computer user profile can still see or use them.” Brave works in a similar way, though I suspect most people using Brave are using a third-party password manager (and probably a VPN) already.
Regardless, storing your passwords in even a less secure browser like Firefox is leaps and bounds better than not using a password manager at all. And the browsers at the forefront of market share, Chrome and Safari, have vastly improved their security practices over the past few years. The problem isn’t encryption—it’s putting all your eggs in one basket.
Let’s Talk OpSec
OpSec, or operational security, is normally a term used when talking about sensitive data in government or private organizations, but you can look at your own security through an OpSec lens. If you were an attacker and wanted to swipe someone’s passwords, how would you go about it? I know where I’d look first.
Even with better security measures, the goal of a browser-based password manager is to get people using password managers. That has to be balanced against how easy the password manager is to use. In a blog post announcing changes to Google’s authentication methods from Google I/O this year, the company mentions reducing “friction” seven times, while “encryption” isn’t mentioned at all. That’s not a bad thing, but it’s a testament to how these tools are designed.
You don’t need to pick out words from a blog post to see this focus. Google gives you the option to turn on Windows Hello or biometric authentication with the Google Password Manager. Each time you want to fill in a password, you’ll need to authenticate. That’s undoubtedly more secure than not authenticating each time, but the setting is turned off by default. It creates friction.
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