COFENSE
We see and stop the email threats that your Secure Email Gateway misses.
310 employees · est. 2011 · Leesburg, United States
Tessian
Cloud Email Security that intelligently prevents advanced email threats and protects against data loss
41 employees · est. 2013 · Boston, United States
COFENSE is the older company (2011 vs 2013); COFENSE is the larger of the two.
Side-by-Side Comparison
| Metric | COFENSE | Tessian |
|---|---|---|
| Founded | ||
| Founded | 2011 older | 2013 |
| Headquarters | ||
| Headquarters | Leesburg, United States | Boston, United States |
| Employees | ||
| Employees | 310 larger | 41 |
| Industry | ||
| Industry | Cyber Security, Enterprise Software, Privacy and Security | AI, Cyber Security, Marketing |
| Funding Stage | ||
| Funding Stage | Debt Financing | Acquired |
| Total Funding | ||
| Total Funding | $58.00M | $130.17M |
| Funding Rounds | ||
| Funding Rounds | 6 | 12 |
| Services | ||
| Services | Not tracked yet | Cybersecurity Platform, Email Protection, Data Security and Governance, Threat Intelligence Solutions, AI-Powered Security Solutions, Security Awareness Training |
| Target Customers | ||
| Target Customers | Not tracked yet | Large Enterprises, Small and Medium Businesses, Government Agencies, Higher Education Institutions, Healthcare Providers, Financial Services, Internet Service Providers |
| Taxonomy | ||
| Taxonomy | Email Threat Detection, Phishing Simulation, Security Awareness Training, Incident Response, Threat Intelligence, Collective Defense, Security Operations, Phishing Defense | Cloud Email Security, Advanced Email Threat Prevention, Data Loss Prevention, Machine Learning Security, Behavioral Data Science, Phishing Attack Prevention, Business Email Compromise Prevention, Insider Threat Protection, Security Culture Building, Human Layer Security, Cyber Security Platform, Security Threat Coaching, AI-powered Security, Accidental Data Loss Prevention, Security Automation |
| Website | ||
| Website | cofense.com | tessian.com |
About COFENSE
COFENSE is a renowned cybersecurity startup, founded in 2011, that focuses on providing advanced email threat detection and remediation solutions. Their slogan "We see and stop the email threats that your Secure Email Gateway misses" highlights their key value proposition. The company offers Cofense...
About Tessian
Tessian, a prominent player in the AI and Cyber Security sectors, has earned a reputation for its innovative approach in cloud email security. Established in 2013, Tessian leverages machine learning and behavioral data science to provide comprehensive protection against sophisticated email-based thr...
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Compiled from the BounceWatch company index. We last looked at COFENSE on 3 Mar 2025, and Tessian on 2 Jun 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.