Guten Morgen!
Monday assorted links:
How do VPN detectors work? (and how to avoid them)
The day your VPN stops working.
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Explainer: macOS updates โ The Eclectic Light Company
If you keep your Mac up to date with the current version of macOS, at least half a dozen times a year youโll install an update to bring it to the latest version. This article explains how those updates have worked in recent years.
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XDA
How do VPN detectors work? (and how to avoid them)
The day your VPN stops working.

The Eclectic Light Company
Explainer: macOS updates
When the architecture of macOS switched to the Signed System Volume in Big Sur, it brought major changes in how macOS is updated, as detailed here.