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Tessian

Tessian

Tessian (formerly Checkrecipient) is an artificial intelligence email security platform.

Tessian is a London based Artificial Intelligence communication security company that prevents threats related to enterprise email communication. The company uses machine learning and natural language processing to combat threats like spear phishing, misaddressed emails, unauthorized emails, and non-compliance. Tessian’s service minimizes the human element of making mistakes while handling emails in work environment.

Emails are the most accessible form of communication for companies and employees are vulnerable to phishing attempts. US Government report shows business email has compromised over 12 billion dollar due to scams from October 2013 to May 2018. The traditional way of preventing phishing using legacy rule-based systems like cross-referencing IP addresses, verifying SPF, DKIM, and DMARC is not enough to prevent strong-form impersonation attacks for large corporations. There are numerous ways rule-based firewalls can be subverted, and these rules add overhead causing delays and catch many false positives.

Product

Tessian first started using machine learning to secure outbound emails only. Tessian started securing inbound emails as well when they launched Tessian defender on September 13, 2018.

Tessian is a service installed on a company’s email server where it monitors and starts learning about contact, patterns, and anomalies in email communication of employees. Machine learning allows the system to analyzes historical data to prevent potential spelling mistakes by alerting employees before the emails are sent. For preventing scams and phishing, Tessian compares it with historical contacts, analyzes the content and characteristics of inbound email using natural language processing to prevent it from reaching the inbox.

History

Tim Sadler, Edward Bishop, and Thomas Adams co-founded an email security company named CheckRecipient in 2013. Checkrecipient was renamed to Tessian after three years on January 31, 2018.

Timeline

August 10, 2021
Tessian raises a $9,000,000 series C round.
May 25, 2021
Tessian closes $65,000,000 in Series C funding round led by March Capital.
May 25, 2021
Tessian raises a $65,000,000 series C round.
February 2019
Tessian raises a $42,000,000 series B round from Accel Partners, Balderton Capital and Sequoia Capital.
January 30, 2019
Checkrecipient is rebranded to Tessian

After three years as Checkrecipient, the company was rebranded to Tessian

January 17, 2019
Tessian raises a $40,000,000 series B round.
June 18, 2018
Tessian raises a $13,000,000 series A round from Balderton Capital.
June 2018
Tessian raises a $13,000,000 series A round from Amadeus Capital Partners, Balderton Capital, Crane Venture Partners, LocalGlobe, Walking Ventures and Winton Ventures.

Funding Rounds

Patents

Further Resources

Title
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Home - Tessiant

Web

News

Title
Author
Date
Publisher
Description
Natasha Lomas
May 25, 2021
TechCrunch
In the latest chunky funding round out of Europe, UK-based email security startup, Tessian, has closed $65 million in Series C funding. The startup applies machine learning to build individual behavior models for enterprise email use that aims to combat human error by flagging problematic patterns which could signify risky stuff is happening -- such [...]
Natasha Lomas
May 25, 2021
TechCrunch
In the latest chunky funding round out of Europe, UK-based email security startup, Tessian, has closed $65 million in Series C funding. The startup applies machine learning to build individual behavior models for enterprise email use that aims to combat human error by flagging problematic patterns which could signify risky stuff is happening -- such [...]
Callum Burroughs
September 24, 2019
Business Insider
"I loved this slide and the story behind it," said a partner at Sequoia Capital, one of Tessian's backers.
Steve O'Hear
Invalid Date
TechCrunch
Continuing a trend that VCs here in London tell me is seeing an increasing amount of deal-flow in Europe attract the interest of top-tier Silicon Valley venture capital firms, TechCrunch has learned that email security provider Tessian is the latest to raise from across the pond. According to multi...

References

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