Cyren doesn't sell security software to end users—it sells the intelligence that powers the security software you already use. With $161.6M in funding, this Israeli-American threat intel provider has built the invisible layer that protects millions from malware, phishing, and brand abuse.

"Cyren operates in the shadows of cybersecurity, providing the intelligence that makes other companies look competent."

• Threat Intelligence-as-a-Service: Powering third-party security products rather than competing with them
• Real-time detection: Specializing in earliest detection of malware, phishing, and brand abuse
• Global threat visibility: Built on infrastructure that analyzes threats across multiple vectors simultaneously

The Trustpilot rating of 3/5 with just 2 reviews tells a story of a company that's not focused on public-facing customer experience. This isn't a weakness—it's a strategic choice. Cyren's customers are security vendors and enterprises, not individual consumers. Their tech stack (jQuery, core-js, Tailwind CSS, Bootstrap) suggests a pragmatic approach to web presence rather than a marketing-first strategy. For founders and investors, Cyren represents a fascinating case study in building a defensible B2B infrastructure business that thrives in the background.