If you use Google Chrome — and most of the world does — there is a new security feature quietly rolling out that could make your accounts meaningfully harder to compromise.
Google has begun rolling out what it calls Device Bound Session Credentials (DBSC) in Chrome 146 on Windows. Support for macOS is coming next. Here is what it is, why it matters, and what it means for you.
What Is Session Hijacking?
Before diving into the fix, it helps to understand the problem.
When you log into a website, the server gives your browser a session token — essentially a pass that says “this person is logged in.” Your browser stores that token, and the website accepts it on every request so you do not have to re-enter your password constantly.
Session hijacking is when someone steals that token. Once they have it, they can impersonate you on that site without needing your password. They do not need to bypass two-factor authentication. They do not need your biometrics. They just need the token — and there are well-established ways to steal it.
It is one of the most common paths to account compromise, and it works even on accounts with strong passwords and multi-factor authentication enabled.
How Does DBSC Fix This?
Device Bound Session Credentials address the problem by tying your session to the specific device you are using.
Instead of issuing a token that can be used from anywhere, the server issues a credential that is cryptographically bound to your device. If someone steals the token and tries to use it from a different machine, it will not work — because the credential requires the original device to validate it.
This happens at the browser level, which means it protects you across websites that adopt the standard — not just one specific service.
Google is rolling this out in Chrome 146, starting with Windows. macOS support is coming in a future release.
Why Does This Matter?
For most users, this change is invisible. You will not notice anything different about how Chrome behaves.
But behind the scenes, it closes one of the longest-standing attack vectors in web security. Session hijacking has been a known, reliable technique for decades. Browser-level defenses against it could have a real, measurable impact on how often accounts get compromised — especially for consumer accounts where users are less likely to have enterprise-grade security tools in place.
For developers and businesses building web products, DBSC is worth watching closely. As more browsers adopt the standard, session security will shift from something that has to be handled by individual services to something built into the platform itself.
What Should You Do?
For most users: nothing. Just keep Chrome updated. The feature rolls out automatically with Chrome 146.
If you are running Chrome on Windows, you may already have it. If you are on macOS, the feature will arrive in a future update.
For those who want to stay on top of security and browser updates, we have also covered Google Chrome’s new vertical tabs and immersive reading mode that are rolling out alongside other Chrome improvements this spring. If you use Chrome extensively, our guide on how to use Split View tabs in Chrome is also worth checking out to get more out of your browser.
The Bottom Line
Device Bound Session Credentials will not make headlines the way a flashy new feature does. But for the people who understand web security, this is a genuinely important move. Tying sessions to devices at the browser level is something security researchers have wanted for years, and Google is now shipping it to hundreds of millions of users.
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