Copyright — legal protection for original creative works (software, music, books, images). Owner has exclusive rights to copy, distribute, modify. Automatic — no registration required.
Piracy — illegal copying or distribution of copyrighted software, music, or films. Harms creators' income. Illegal under copyright law.
Open Source — source code freely available, can be modified and distributed. e.g. Linux, Python. Promotes collaboration and innovation.
Creative Commons — flexible licensing allowing creators to specify how work can be shared/used.
AI-generated content — who owns content made by AI trained on copyrighted works? Active ethical and legal debate.