Operating Theory · 2026-09-15

Backups are usually out of scope, and usually full of the data

Retention and deletion policies often exclude backups for practical reasons. The exclusion is defensible. Leaving it unstated in the notice is not.

Under the pillar The dangers of data privacy theatre

The tension

Immutable backups help security and complicate privacy. The same property that stops an attacker from deleting data also stops the organisation from deleting it. This is a genuine engineering problem.

The research question is which architectures resolve it honestly, for example crypto-shredding with per-subject keys, and what those approaches cost in recovery complexity.

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Backups are usually out of scope, and usually full of the data challenge record

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