Writing a data retention policy

By Sam Rivera, Founder, SentinelPanda · June 19, 2026 · 1 min read · Compliance

Most retention policies describe a discipline nobody actually follows. The value is in the deletion that actually happens, not the schedule on paper.

Why you need one

Retention sits at the intersection of security, privacy, and compliance. SOC 2, ISO 27001, and privacy laws (GDPR, CCPA) all expect you to keep data only as long as needed and dispose of it properly. Data you no longer hold cannot be breached, subpoenaed, or mishandled — minimisation is a security control, not just a legal one.

What it must contain

For each category of data — customer records, logs, backups, employee data, support tickets — state how long you keep it, the legal or business reason, and how it is disposed of. Vague "we keep data as long as necessary" satisfies nobody; concrete periods per data type do.

Make it enforceable

A policy that depends on someone remembering to delete is aspirational. Implement the retention with automation where possible — TTLs on logs, scheduled purges, backup expiry — so deletion happens on schedule without human action. The enforcement is the control; the document is the script.

Prove deletion happens

Auditors and data-subject requests test the back end: when the period lapses, does the data actually go. Keep evidence of the deletion jobs running. SentinelPanda tracks the retention control and its evidence so "we delete after N months" is demonstrable, not assumed.