KnowBe4 vs Signifyd
Side-by-side comparison of AI visibility scores, market position, and capabilities
KnowBe4 is the world's largest security awareness training platform, delivering simulated phishing, compliance training, and human risk management to 65,000+ organizations.
About
KnowBe4 is a cybersecurity company headquartered in Tampa, Florida that operates the world's largest security awareness training and simulated phishing platform, serving over 65,000 organizations across 11 million users. Founded in 2010 by Stu Sjouwerman, the company was built on the thesis that the human element — employees who click phishing links, reuse passwords, and inadvertently install malware — represents the primary attack vector in the majority of successful breaches, and that continuous, measurable security awareness training combined with simulated phishing exercises is the most effective way to reduce this human risk. KnowBe4 went public in 2021 and was taken private by Vista Equity Partners in 2023 in a transaction valued at approximately $4.6 billion.
Signifyd is the leading e-commerce fraud protection platform offering a financial chargeback guarantee backed by machine learning; protects over $100B in annual commerce for retailers including Walmart, Samsung, and Lacoste;
About
Signifyd is a fraud prevention and commerce protection company founded in 2011 by Rajesh Ramanand and Michael Liberty, headquartered in San Jose, California. The company's core product is a machine-learning-powered fraud platform that evaluates every order placed on an e-commerce site in real time, assigning a confidence score and a financial guarantee: if Signifyd approves an order and it turns out to be fraudulent, Signifyd reimburses the chargeback — shifting the liability from the retailer to Signifyd. This chargeback guarantee model fundamentally changes the economics of fraud prevention, allowing merchants to approve more orders with confidence rather than declining borderline transactions out of caution.
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