The Minimization Principle

Data minimization is both a GDPR principle (Article 5(1)(c)) and a security best practice: collect, process, and retain only the minimum amount of personal data necessary for your stated purpose.

Every piece of data you hold is a liability: • It can be breached • It must be protected • It may be subject to access requests • It increases regulatory risk • It costs money to store and manage

The data you don't have can never be breached. This makes data minimization the most effective data protection strategy available — even more effective than encryption (though both should be used together).

Implementing Data Minimization

For Organizations: • Audit what data you collect — is each field genuinely necessary? • Set retention periods — delete data when it's no longer needed • Anonymize where possible — if you need analytics, you rarely need identifiable data • Review third-party tools — do they collect more data than necessary?

For Individuals: • Use email aliases to limit data linkage across services • Provide minimal information during registration • Regularly delete unused accounts • Choose services that practice data minimization (like ZeroLatch, which supports anonymous registration)

For Dead Man's Switch Services: ZeroLatch practices data minimization by: • Supporting anonymous registration (no email required) • Using zero-knowledge encryption (we can't access your data content) • Storing only what's necessary for the service to function • Redacting PII from activity logs

The Minimization Mindset

Data minimization should be the default, not an afterthought:

Question every data collection: Before adding a field to a form, ask: "Do we actually need this? What's the minimum we need to achieve the goal?"

Default to anonymous: If a service works without identifying information, don't collect it.

Delete proactively: Don't wait to be asked. Set up automated deletion for data past its retention period.

Minimize metadata too: It's not just about the content — metadata (timestamps, IP addresses, device information) can be just as revealing.

The less data exists, the less there is to protect, breach, regulate, or misuse.