Comment Re:That's why nobody sensible wants them (Score 3, Informative) 223
PII should be classified based on sensitivity. At a certain level, that PII must be encrypted during transit. At the highest level, it must be encrypted during transit and at rest. SSN falls in the highest sensitivity level. SOP for years. This doesn't guarantee you won't get hacked, but it reduces / minimizes the impact if you are hacked.
PII - Personally Identifiable Information
SSN - Social Security Number
SOP - Standard Operating Procedure