tCell provides security for applications and services in production. The Company moves application security out of the network for cloud-first organizations. With an approach combining in-application instrumentation and cloud-based analytics, helps organizations determine the attack surface of their applications, monitor threats, and defend against attacks – without lots of tuning or integration effort. Whether an organizations’ business applications are on-premises or cloud-based,'s unique approach makes application security easy.
HQSan Francisco, US
Size (employees)79 (est)-1%
tCell was founded in 2014 and is headquartered in San Francisco, US
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Key People/Management at tCell

Boris Chen

Boris Chen

Vp of Engineering
Michael Feiertag

Michael Feiertag

Steve Mullaney

Steve Mullaney

Independent Director
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tCell Office Locations

tCell has offices in San Francisco and Stockholm
San Francisco, US (HQ)
200 470 3rd St
Stockholm, SE
8 Slottsbacken
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tCell Financials and Metrics

Summary Metrics

Founding Date


tCell total Funding

$9.4 m

tCell latest funding size

$9.40 m

Time since last funding

2 years ago

tCell investors

tCell's latest funding round in October 2016 was reported to be $9.4 m. In total, tCell has raised $9.4 m
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Human Capital Metrics

tCell's employees are reported to be approximately 20% female and 80% male.
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tCell Online and Social Media Presence

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tCell News and Updates

Rapid7 Acquires Leading Web Application Security Provider, tCell

BOSTON, Oct. 15, 2018 (GLOBE NEWSWIRE) -- Rapid7, Inc. (NASDAQ: RPD), powering SecOps through its visibility, analytics and automation cloud, today announced it acquired, Inc., a leading provider of web application threat defense and monitoring. Through this acquisition, Rapid7 plans to e…

tCell Finds Web Application Attack to Breach Ratio Still High With Cross-Site Scripting (XSS) and SQL Injection the Most Common

SAN FRANCISCO, Aug. 22, 2018 /PRNewswire/ -- tCell, the leading provider of web application threat defense and monitoring, today released the Security Report for Web Applications (Q2 2018) which identified key threats in real-world web application traffic in the Amazon Web Services (AWS)...
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tCell Blogs

Rapid7 Acquires tCell

Today we’re announcing the next step in tCell’s mission to secure the world’s web applications. We’re joining forces with Rapid7 to fundamentally change how teams approach application security.

Defending Against Magecart with CSP

  The current trendy attack against retailers is the use of scripts to skim credit card information, best known as a series of attacks by the Magecart group (believed to be behind the British Airways and Newegg breaches). This begs the question of why retail is so bad at application sec…

tCell Named a Gold Winner for Innovations in Web Application Security by Golden Bridge Awards®

We're so excited to announce that we were named a Gold Winner for Web Application Security Innovations by the 2018 Golden Bridge Awards®. The coveted annual Golden Bridge Awards program honors the world’s best in organizational performance, innovations, products and services, deployments…

The Newegg Breach: PCI Means Nothing to Magecart

  On September 7, British Airways was breached, in spite of following the detailed rules for payment card security, the PCI Data Security Standard. Two weeks later, on September 19, Newegg announced that they were breached. Both of these breaches occurred at sites which followed data se…

The British Airways Breach: PCI is Not Enough

 I’ve previously written about the Ticketmaster breach, which was the work of Magecart, a group that has been active since 2016. One of their latest victims was British Airways, which announced that they had been breached on September 7 (remember that date because it will be important la…

Do You Know Your AppSec ROI?

 This week has been a pretty interesting week in breaches. With the recent news of Magecart being the attacker of both Ticketmaster and British Airlines, you can’t help but wonder why companies aren’t learning from each other so they aren’t faulted for the same vulnerabilities. The answe…
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tCell Company Life and Culture

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tCell Frequently Asked Questions

  • When was tCell founded?

    tCell was founded in 2014.

  • Who are tCell key executives?

    tCell's key executives are Boris Chen, Michael Feiertag and Steve Mullaney.

  • How many employees does tCell have?

    tCell has 79 employees.

  • Who are tCell competitors?

    Competitors of tCell include Three Wire Systems, Tista Science and Technology and Netsweeper.

  • Where is tCell headquarters?

    tCell headquarters is located at 200 470 3rd St, San Francisco.

  • Where are tCell offices?

    tCell has offices in San Francisco and Stockholm.

  • How many offices does tCell have?

    tCell has 2 offices.