It looks like Microsoft is testing a new Microsoft Defender Windows and intends to release it on the insiders channel.
O user Aggiornamenti Lumia published on Twitter a snapshot screen της αρχικής οθόνης του νέου προγράμματος protections. The application was codenamed GibraltarApp and that's what all the files in the internal version were called, whether they were .exe or .dlls.
The application is currently a WPF (Windows Presentation Foundation) and uses XAML and WebView2. It will replace the current inbox app in Windows 11.
It is claimed to offer "simple, seamless and personalized protection" to users and is expected to be released to Windows Insiders in the near future.
We are waiting and seeing her up close.