Treat PII as Toxic: Designing Secure Systems That Contain the Blast Radius

PII Is Not “Just Another Field”

Most engineers treat all data in the same way, regardless of what it is. Names, Emails, Phone numbers, SSNs, etc., are stored as just another column in a table. In reality, not all data is equal, and considering them as equal is a dangerous mindset.

Some data is PII (Personally Identifiable Information), and mishandling it can lead to:

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