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Gathering insights about Tessian

Tessian Tech Stack

Tessian uses 8 technology products and services including AWS Lambda, HashiCorp Terraform, Salesforce, and more. Explore Tessian's tech stack below.

  • AWS Lambda
    Big Data Processing
  • HashiCorp Terraform
    Configuration Management
  • Salesforce
    Customer Relationship Management
  • Aetna
    Customer Service
  • NoSQL
    Database
  • SEMrush
    Marketing Automation
  • KnowBe4
    Security
  • ZURB Foundation
    UI Frameworks

Media & News

Tessian's Email Address Formats

Tessian uses at least 1 format(s):
Tessian Email FormatsExamplePercentage
First.Last@tessian.comJohn.Doe@tessian.com
88%
FLast@tessian.comJDoe@tessian.com
9%
First@tessian.comJohn@tessian.com
2%
FirstLast@tessian.comJohnDoe@tessian.com
1%

Frequently Asked Questions

Where is Tessian's headquarters located?

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Tessian's main headquarters is located at Boston, Massachusetts United States. The company has employees across 4 continents, including EuropeNorth AmericaAsia.

What is Tessian's phone number?

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You can contact Tessian's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Tessian's official website and social media links?

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Tessian's official website is tessian.com and has social profiles on LinkedInCrunchbase.

What is Tessian's NAICS code?

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Tessian's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Tessian have currently?

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As of May 2026, Tessian has approximately 42 employees across 4 continents, including EuropeNorth AmericaAsia. Key team members include Chief Product Officer: A. L.Head Of Marketing & Communications: K. H.Head Of Communications & Content: L. B.. Explore Tessian's employee directory with LeadIQ.

What industry does Tessian belong to?

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Tessian operates in the Computer and Network Security industry.

What technology does Tessian use?

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Tessian's tech stack includes AWS LambdaHashiCorp TerraformSalesforceAetnaNoSQLSEMrushKnowBe4ZURB Foundation.

What is Tessian's email format?

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Tessian's email format typically follows the pattern of First.Last@tessian.com. Find more Tessian email formats with LeadIQ.

When was Tessian founded?

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Tessian was founded in 2013.

Tessian

Computer and Network SecurityMassachusetts, United States11-50 Employees

Tessian was acquired by Proofpoint. View the press release: https://www.proofpoint.com/us/newsroom/press-releases/proofpoint-closes-acquisition-tessian.

To see what’s new, visit https://www.linkedin.com/company/proofpoint/.

Tessian is a leading cloud email security platform that intelligently protects organizations against advanced threats and data loss on email, while coaching people about security threats in-the-moment. Using machine learning and behavioral data science, Tessian automatically stops threats that evade legacy Secure Email Gateways, including advanced phishing attacks, business email compromise, accidental data loss and insider threats. Tessian’s intelligent approach not only strengthens email security but also builds smarter security cultures in the modern enterprise. 

Founded in 2013, Tessian is backed by legendary investors such as March Capital, Sequoia, Accel and Balderton, and has been recognized as one of Fast Company’s Most Innovative Companies for 2022.

Request a demo here: https://www.tessian.com/book-demo/

Section iconCompany Overview

Headquarters
Boston, Massachusetts United States
Phone number
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
2013
Employees
11-50

Section iconFunding & Financials

  • $50M$100M

    Tessian's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    Tessian's revenue is estimated to be in the range of $50M$100M

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