Introduction.- Conterfeit Integrated Circuits.- Counterfeit Defects.- Physical Tests for Counterfeit Detection.- Electrical Tests for Counterfeit Detection.- Counterfeit Test An Assessment of Current Counterfeit Detection Methods.- Advanced Physical Tests.- Advanced Electrical Tests.- Combating Die and IC Recycling.- Hardware IP Watermarking.- Prevention of Unlicensed and Rejected ICs from Untrusted Foundry and Assembly.- Chip ID.