After Ventura upgrade: "Logos is damaged and can’t be opened. You should move it to the Trash". Cause?

Upgraded from Monterey to Ventura on my Hackintosh, after upgrading OpenCore to 1.0.0 and all my kexts to the latest versions. Everything went smoothly, except that some apps refused to start , producing a cryptic and misleading error message:

"Logos is damaged and can’t be opened. You should move it to the Trash"

Really? Move it to the Trash?

Same thing happened with a recent version of Parallels Desktop. I never had this happen previously after an upgrade and initially thought it was related to some hackintosh peculiarities.

The Logos.app is a publisher signed bible study application that was up to date. Other applications like qBittorrent which I had approved before the upgrade continued to function. Various sites suggested to xattr -cr /path/to/application.app (or with the -dr switch). I tried xattr -dr com.apple.quarantine /Volumes/Apps/Applications/Logos.app , but this did not work for me.

For some unknown reasons these applications were blacklisted by Gatekeeper and required me to permit opening them from within System Preferences as an app from a supposedly unknown publisher.

Security is set to: App store and identified developers

Could the error message be any more misleading ;-) Does Ventura have any new security features that interfere with our previously configured and working applications?

I doubt that it was caused by any Hackintosh specific configuration, but I also do not find anyone on other sites mentioning this happening after an upgrade to multiple apps. SIP is enabled and it is running on a compatible 9th gen Intel CPU.