Side-by-Side Comparison
| Metric | ObserveIT | Tessian |
|---|---|---|
| Founded | ||
| Founded | 2006 older | 2013 |
| Headquarters | ||
| Headquarters | Boston, United States | Boston, United States |
| Employees | ||
| Employees | 39 | 41 |
| Industry | ||
| Industry | Cloud Infrastructure, Cyber Security, IT | AI, Cyber Security, Marketing |
| Funding Stage | ||
| Funding Stage | Series B | Acquired |
| Total Funding | ||
| Total Funding | $53.00M | $130.17M |
| Funding Rounds | ||
| Funding Rounds | 3 | 12 |
| Services | ||
| Services | Insider Threat Management, Data Security Posture Management, Email Security, Security Awareness Training, Managed Security Services | Cybersecurity Platform, Email Protection, Data Security and Governance, Threat Intelligence Solutions, AI-Powered Security Solutions, Security Awareness Training |
| Target Customers | ||
| Target Customers | Enterprises, Government Agencies, Educational Institutions, Financial Services, Healthcare Organizations, Small and Medium Businesses | Large Enterprises, Small and Medium Businesses, Government Agencies, Higher Education Institutions, Healthcare Providers, Financial Services, Internet Service Providers |
| Taxonomy | ||
| Taxonomy | Insider Threat ManagementData Loss PreventionSecurity Incident ResponseInsider Threat ProgramsData BreachesContextual Intelligence +8 | Cloud Email SecurityAdvanced Email Threat PreventionData Loss PreventionMachine Learning SecurityBehavioral Data SciencePhishing Attack Prevention +9 |
| Website | ||
| Website | observeit.com | tessian.com |
About ObserveIT
ObserveIT is a cyber security startup acquired by Proofpoint, as announced on Proofpoint website. The company, founded in 2006 and headquartered in the United States, specializes in Insider Threat Management, addressing the fact that over 50% of data breaches involve an insider's actions. With over...
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 ObserveIT 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.
