There very much was a well defined distinction between safety and security: Sicherheit and Schutz, as in Datensicherheit and Datenschutz.

And yeah, you can see with those two latter terms where the issue lies :)

Those two were traditionally actually used this way in the safety and security context - I think I even have the script for the "Datenschutz und Datensicherheit" lecture I had on uni in the '90s lying around somewhere in the attic.

But their meaning has changed and muddled so much over the years - probably not helped by the fact that "Sicherheit" is much closer to "security" in colloquial usage, and probably vice versa(?) - that they stopped being useful and used in this context.