IP Address Truncation Fails to Achieve GDPR-Compliant Anonymization
By
pabs3
A baker's-dozen of insight crammed into one ring.
Summary
The article examines the common practice of IP address truncation (zeroing out the last octet of IPv4 addresses or stripping bits from IPv6 addresses) that is widely promoted as GDPR-compliant pseudonymization. It argues that this approach fails to provide true anonymity, as truncated IP addresses still constitute personal data under GDPR regulations. The piece likely discusses technical and legal aspects of data privacy, explaining why simple truncation doesn't achieve genuine anonymization and may mislead organizations about their compliance obligations.
Key quotes
· 4 pulledYou've probably seen it in analytics dashboards, server logs, or privacy documentation: IP addresses with their last octet zeroed out.
This practice is widespread, often promoted as 'GDPR-compliant pseudonymization,' and implemented by major analytics platforms, log aggregation services, and web servers worldwide.
There's just one problem: truncated IP addresses are still personal data under GDPR.
If you're using IP address truncation thinking it makes data 'anonymous'...
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