Everything You Need to Know About Section 230

Section 230 of the Communications Decency Act, which was passed in 1996, says an “interactive computer service” can’t be treated as the publisher or speaker of third-party content. This protects websites from lawsuits if a user posts something illegal, although there are exceptions for copyright violations, sex work-related material, and violations of federal criminal law.

Sen. Ron Wyden (D-OR) and Rep. Chris Cox (R-CA) crafted Section 230 so website owners could moderate sites without worrying about legal liability. The law is particularly vital for social media networks, but it covers...