macOS thinks an app from the Mac App Store was downloaded through Chrome

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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 and installed the Yubico Authenticator through the Mac App Store on my new MacBook Air, rather than downloading it from yubico.com using a web browser.

The app’s Mac App Store version is 5.1.0, and it was last updated a year ago according to the version history.

The first time I tried to run the app, my Mac told me that since it’s an Intel app instead of “Apple Silicon” or “Universal”, I should first install “Rosetta” from Apple. Installing Rosetta 2 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 application downloaded from the Internet. Are you sure you want to open it? Chrome downloaded this file on September 27, 2021”.

This post doesn’t make any sense, because I *didn’t* download the app through Chrome a year ago; I downloaded it directly from the Mac App Store *this week*. I didn’t even install Chrome on my MacBook Air!

I deleted the app, downloaded it again from the Mac App Store and tried to open it one more time. This time everything went well without any strange message.

Why would copying the app downloaded from the Mac App Store before installing Rosetta make my MacBook Air think it was downloaded through Chrome a year earlier?

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