[u02sgb]

There are now d-locks that are angle grinder resistant. The reviews I've read suggest they need two cuts to open and each cut uses a full angle grinder disc.

As ever, impossible to stop a determined thief, but starting to get "good enough".

[soco]

Do you have some example links on those locks? Might be interesting to check...

[dgroshev]

This is one option: https://www.youtube.com/watch?v=GMg6zVdYI0g really impressive, I didn't know it's a thing