Signifyd is a software company that provides fraud prevention and chargeback protection solutions for e-commerce businesses. The company was founded in 2011 by Raj Ramanand, Michael Liberty, and Chris Drake and is headquartered in San Francisco, California. Signifyd's platform uses machine learning algorithms to analyze transactions and identify potential fraud, allowing merchants to accept more orders with less risk. The company has raised over $400 million in funding and serves over 10,000 merchants worldwide. Signifyd has been recognized as one of the fastest-growing companies in the United States by Inc. Magazine and Deloitte.