Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys.

This week: The U.S. Supreme Court heard the first of two cases this week involving the liability of tech companies, many hit with privacy class actions. Norfolk Southern already faces 10 class actions over its Feb. 3 derailment in East Palestine, Ohio. Find out who Facebook parent Meta Platforms hired in a privacy class action involving the California DMV.