- What is privacy
- Seclusion: the right to be let alone
- Limits: the ability to limit access
- Control: control over information
- Secrecy: the option of secrecy
- Liberty: a prerequisite for political liberty
- Tracking mechanisms:
- Third-party cookies
- browser fingerprinting
- Privacy badger
- Data anonymization:
- k-anonymity: ensure each record is indistinguishable from at least k-1 other records
- Differential privacy: achieve by adding random noise
- Defense against government intrusion to privacy:
- Off-the-record messaging
- message confidentiality, authentication, forward secrecy, deniability
- Off-the-record messaging
- Tor, Onion-routing
- No Tor relay knows both the client's address and the destination address
- entry node: knows client's address and identity of middle node
- exit node: knows a tor client is connecting to destination
- destination: knows a Tor user is connecting
- No Tor relay knows both the client's address and the destination address