Eight ideas to carry forward.
1Four privacy types: informational, physical, decisional, associational. Each carries distinct IT implications.
2US privacy law is sectoral. Six federal statutes plus state laws. GDPR fills gaps via extraterritoriality.
3Carpenter v. US rewrote the third-party doctrine for the smartphone era. Comprehensive CSLI requires a warrant.
4Section 230 = two protections: no publisher liability, "good faith" moderation. Algorithmic amplification challenges both.
5Reno v. ACLU (1997): the internet gets print-level First Amendment protection. Active-seeking, not broadcast.
6Four IP mechanisms: copyright (auto), patent (USPTO), trademark (use + renewal), trade secret (no registration).
7Open source is a spectrum. MIT/Apache (permissive) → GPL (copyleft) → AGPL (network copyleft).
8Method, not information. SEC filing = intelligence. Unauthorized access = espionage. Same data; different ethics.