| # | Company | Employees |
|---|---|---|
| 1 |
Splunksplunk.com
Providing organizations with a unified security and observability platform to ensure operational resilience in the face of digital disruptions |
8,820 |
| 2 | 7,522 | |
| 3 |
Cloudflarecloudflare.com
The company is a leading connectivity cloud provider, empowering organizations to enhance speed and security while reducing complexity and cost |
7,489 |
| 4 |
HackerOnehackerone.com
A global leader in human-powered security, leveraging human ingenuity and AI to find critical security flaws and reduce threat exposure |
7,165 |
| 5 |
Elasticelastic.co
This company specializes in Enterprise Search, Observability, and Security solutions to enhance customer and employee experiences, ensure smooth application performance, and protect against cyber threats |
5,089 |
| 6 |
Bugcrowdbugcrowd.com
Connects organizations with trusted hackers via an AI-powered platform to proactively protect digital assets from advanced threats before attacks occur, ensuring continuous security. |
3,740 |
| 7 | 1,882 | |
| 8 |
Mozillamozilla.org
This company designs, builds, and distributes software (including the Firefox browser) to ensure an open and accessible internet for all |
1,766 |
| 9 |
Fastlyfastly.com
Enhance websites and applications by leveraging Fastly's edge cloud platform, catering to popular brands like Reddit, Pinterest, and Stripe |
1,415 |
| 10 | 1,226 | |
| 11 | 1,083 | |
| 12 |
Coalition, Inc.coalitioninc.com
A pioneering Active Insurance provider combining coverage and cybersecurity tools to proactively manage and mitigate digital risks for businesses globally |
708 |
| 13 |
Incodeincode.com
Provides an AI-driven platform for accurate identity verification, automating security, maximizing conversions, and preventing fraud for enterprises across various industries. |
665 |
| 14 |
Sysdigsysdig.com
Helps security, development teams prevent, detect, respond cloud threats, with real-time defense, correlating signals across workloads, identities, services, exposing hidden attack paths, active risk. |
619 |
| 15 | 593 | |
| 16 |
Hexnodehexnode.com
Offers AI-powered solutions to streamline endpoint management, user identity, and threat defense for businesses, improving visibility, control, and compliance. |
512 |
| 17 | 471 | |
| 18 |
Upwind Securityupwind.io
Bridges cloud intelligence from runtime to build-time, eliminating friction and boosting productivity for developers, security engineers, and DevOps. Delivers comprehensive cloud security. |
449 |
| 19 |
TRM Labstrmlabs.com
A blockchain intelligence company detecting and investigating crypto-related financial crime and fraud to safeguard the financial system |
423 |
| 20 |
Nozomi Networksnozominetworks.com
Protects critical infrastructure from cyber threats using network, endpoint visibility, threat detection, and AI analysis for faster incident response. |
392 |
| 21 |
Sardinesardine.ai
A leading company in financial crime prevention, using advanced technology to detect and prevent fraud, money laundering, and other illicit activities for over 250 clients |
334 |
| 22 |
AutoRABITautorabit.com
AutoRABIT provides DevSecOps tools for Salesforce developers to increase release velocity, improve code quality, enhance data security, and optimize development processes |
277 |
| 23 | 269 | |
| 24 |
Semgrepsemgrep.dev
Provides code security platform unifying SAST, SCA, and secrets scanning, embedding protection directly into development workflow, uncovering and fixing real vulnerabilities faster. |
264 |
| 25 | 263 | |
| 26 |
Riottryriot.com
The company creates a platform that helps organizations prepare their employees for cyberattacks in an engaging way to prevent human errors |
243 |
| 27 |
ForgeRock (Now Ping Identity)pingidentity.com
Delivers modern and comprehensive Identity and Access Management solutions for consumers, employees, and things to simply and safely access the connected world. |
238 |
| 28 |
Veherevehere.com
Leading cybersecurity company operating at national and enterprise security. Provides AI-powered network intelligence processing petabytes of data to detect threats in real-time. |
220 |
| 29 |
Odasevaodaseva.com
Odaseva helps large Salesforce customers manage, protect, and move their data to ensure business continuity, compliance with regulations, and system optimization |
164 |
| 30 |
Secureframesecureframe.com
Automated compliance platform designed by experts to revolutionize risk and compliance management for businesses |
128 |
| 31 |
Borneo (Acquired by Atlassian)borneo.io
Real-time data security and privacy platform for hyper-growth businesses, enabling risk identification, remediation, and compliance across data infrastructure, SaaS, and APIs |
109 |
| 32 |
Check Point AI Securitylakera.ai
Lakera secures AI applications for enterprises by mitigating cyber risks, working with Fortune 500 companies, startups, and model providers while developing AI security solutions |
102 |
| 33 |
Skybox Securityskyboxsecurity.com
Visualizes and analyzes hybrid and multi-cloud networks, providing full context and understanding of the attack surface to reduce cyber exposure. |
99 |
| 34 |
Stytchstytch.com
Stytch provides a powerful identity platform for developers with advanced features like device fingerprinting and secure authentication for secure access management |
73 |
| 35 |
Traceable by Harnesstraceable.ai
Provides industry-leading API security. Achieves API visibility and attack protection in a cloud-first, API-driven world. Minimizes risk, maximizes value. |
62 |
| 36 |
Escapeescape.tech
Automates the full offensive security lifecycle, discovering and validating modern application, API, and infrastructure exposures from code to cloud. |
61 |
| 37 |
Thycoticdelinea.com
Provider of privileged access management solutions securing data, devices, code, and cloud infrastructure for risk reduction and compliance. |
60 |
| 38 |
Darwiniumdarwinium.com
Darwinium provides a digital security and fraud prevention platform on the perimeter edge, protecting customer interactions from fraud and online abuse |
48 |
| 39 |
Didit (YC W26)didit.me
The company offers an App using NFC, blockchain, and AI technologies for secure identity verification and digital payments, enhancing user experience and data security |
34 |
| 40 |
Brighterion, a Mastercard Companymastercard.com
A leading provider of real-time artificial intelligence technology for fraud prevention in financial transactions, credit risk management, and healthcare fraud detection |
33 |
| 41 |
elbaelba.security
Providing a comprehensive security solution for teams in their daily work routine, ensuring ultimate protection and peace of mind |
29 |
| 42 |
Vectrixcloudflare.com
Vectrix offers easy-to-use SaaS security scanning for organizations to identify and address security risks across various applications in real-time |
11 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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The same list elsewhere in United States
- Cybersecurity companies in the United States 670
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