Data and Goliath

Data and Goliath explores the pervasive collection of personal data by corporations and governments, arguing that this surveillance infrastructure poses fundamental threats to freedom, democracy, and security. Schneier documents how data brokers, tech companies, and state agencies gather intimate details about citizens' lives—from financial transactions to location history—often without meaningful consent or transparency.

The book examines the asymmetry of power created by data concentration: while individuals have little visibility into how their data is used, large organizations leverage it for profit, manipulation, and control. Schneier discusses both the technical mechanisms of surveillance and its societal consequences, including discrimination, manipulation, and erosion of autonomy.

Beyond diagnosis, Schneier proposes practical and policy-based solutions: stronger privacy regulations, corporate accountability, encryption adoption, and legal reforms. The work became influential in shaping public discourse around data privacy, particularly following revelations about NSA surveillance and corporate data practices. It remains a foundational text for understanding modern surveillance capitalism and privacy advocacy.