As you say, it depends on the person but I think for most people an acceptable definition is "deanonymization reveals PII". What qualifies as PII depends on the

As you say, it depends on the person but I think for most people an acceptable definition is "deanonymization reveals PII". What qualifies as PII depends on the context/jurisdiction but typically an IP address would be considered PII whereas country (or a similar broad region) would not. https://en.wikipedia.org/wiki/Personal_data https://en.wikipedia.org/wiki/Personal_data