1. PII (Personally Identifiable Information):
   • Information that directly identifies an individual.
   • Examples: Name, Social Security Number, Address, Phone Number.
2. PCI (Personal Customer Information):
   • Information that identifies and describes a customer.
   • Examples: Purchase history, customer preferences, payment details.
3. SPI (Sensitive Personal Information):
   • Information that doesn't necessarily identify an individual but could cause harm or embarrassment if made public.
   • Examples: Health information, sexual orientation, religious beliefs.

Note: These terms are often used interchangeably, but they have distinct meanings.