Guides & articles
Practical writing on personal data in text: what the law counts, what leaks out of a log file, and how detection patterns are built and validated.
What counts as personal data under GDPR
Most people picture a name and a passport number. The legal definition is far wider: IP addresses, cookie IDs and combinations that look harmless alone.
6 min readUpdated July 2026
Redacting logs and tickets before sharing
A single log line can carry an email, a session token, an IP and a card number. What actually leaks, how to cover it, and where redaction stops helping.
6 min readUpdated September 2026
Regex patterns for emails, phones and cards
Matching the shape of a value is only half the job. Checksums, digit counts and honest boundaries separate a useful detector from a false-positive machine.
7 min readUpdated May 2026
