Every additional hour a link is valid increases exposure. Time-bound links reduce the attack window.

Expiration should be based on business need, not convenience defaults.

TTL alone is good; TTL plus download-count limits is better. This limits replay and unintended redistribution.

Burn-after-read can be effective for high-sensitivity handoffs where one retrieval is expected.

Incidents happen. Manual destruction gives teams immediate control when a link is shared incorrectly.

Pair this with auditable lifecycle logs so operational teams can verify the state quickly.