A complete snapshot of the user’s browser window at that moment in time will be captured, pixel by pixel (!)

The mix of a fingerprint and first-party cookies is pervasive as Google can give a very high level of entropy when it comes to distinguishing an individual person.

Google encouraging site admins to put reCaptcha all over their sites, and then sharing the resulting risk scores with those admins is great for security, Perona thinks, because he says it “gives site owners more control and visibility over what’s going on” with potential scammer and bot attacks, and the system will give admins more accurate scores than if reCaptcha is only using data from a single webpage to analyze user behavior. But there’s the trade-off. “It makes sense and makes it more user-friendly, but it also gives Google more data,”

For instance, Google’s reCaptcha cookie follows the same logic of the Facebook “like” button when it’s embedded in other websites—it gives that site some social media functionality, but it also lets Facebook know that you’re there.

Before we get to passwords, surely you already have in mind that Google knows everything about you. It knows what websites you’ve visited, it knows where you’ve been in the real world thanks to Android and Google Maps, it knows who your friends are thanks to Google Photos. All of that information is readily available if you log in to your Google account. You already have good reason to treat the password for your Google account as if it’s a state secret.