Taking Off Your NameTag

Recently, there’s been some excitement over the discovery that some sites are (ab)using browser password managers to identify users even when they’re not logged in. This technique (I call it the “NameTag vulnerability”) isn’t new or novel, but the research showing that it’s broadly being used “in the wild” is certainly interesting1, and may motivateContinue reading “Taking Off Your NameTag”

Google Internet Authority G3

For some time now, operating behind the scenes and going mostly unnoticed, Google has been changing the infrastructure used to provide HTTPS certificates for its sites and services. You’ll note that I said mostly. Over the last few months, I’ve periodically encountered complaints from users who try to load a Google site and get an unexpectedContinue reading “Google Internet Authority G3”

Chrome Field Trials

Back in April, we announced: Beginning in October 2017, Chrome will show the “Not secure” warning in two additional situations: when users enter data on an HTTP page, and on all HTTP pages visited in Incognito mode. This is true, but it’s perhaps a little misleading, based on some of the tweets we’ve seen: What isn’t mentioned inContinue reading “Chrome Field Trials”

Stealing your own password is not a vulnerability

By far, the most commonly-reported “vulnerability” reported to the Chrome Vulnerability Rewards program boils down to “I can steal my own password.” Despite having its very own FAQ entry, this gets reported to the VRP at varying levels of breathlessness, sometimes multiple times per day. You can see this “attack” in action: Yes, it’s true,Continue reading “Stealing your own password is not a vulnerability”

Chrome 59 on Mac and TeletexString Fields

Update: This change ended up getting backed out, after it was discovered that it impacted smartcard authentication. Thanks for self-hosting Chrome Dev builds, IT teams! A change quietly went into Chrome 59 that may impact your certificates if they contain non-ASCII characters in a TeletexString field. Specifically, these certificates will fail to validate on Mac, resulting inContinue reading “Chrome 59 on Mac and TeletexString Fields”