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macOS thinks a Mac App Store app was downloaded via Chrome | #macos | #macsecurity | #hacking | #aihp

This week, I set up a new “Apple Silicon” Apple MacBook Air (M2, 2022), which is running the latest macOS Monterey 12.6.

I downloaded & installed the Yubico Authenticator via the Mac App Store on my new MacBook Air, rather than download it from using a web browser.

The Mac App Store version of the app is 5.1.0, and its last update was one year ago according to the version history.

The first time I tried to run the app, my Mac told me that because it’s an Intel app instead of “Apple Silicon” or “Universal”, I would have to first install Apple’s “Rosetta”. The Rosetta 2 installation was direct from Apple, not unexpected, and not a problem.

However, when I then tried to run the Yubico Authenticator app again after installing Rosetta, my Mac gave me a different and very strange warning:

“Yubico Authenticator is an app downloaded from the Internet. Are you sure you want to open it? Chrome downloaded this file on 27 September 2021”.

This message makes no sense, as I did *not* download the app via Chrome a year ago; I downloaded it directly from the Mac App Store *this week*. I don’t even have Chrome installed on my MacBook Air!

I deleted the app, downloaded it again from the Mac App Store, and tried opening it once more. This time it ran fine without any strange messages.

Why would the copy of the app downloaded from the Mac App Store before the Rosetta installation make my MacBook Air think it was downloaded via Chrome a year earlier?

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