Discover 4 cybersecurity companies building on .Security
posted by Team XYZ on October 2, 2026
TL;DR
- Act.Security, Faze.Security, Kontext.Security, and Pi.Security are the online homes of cybersecurity companies developing platforms for AI agent runtime security, cloud security, offensive security, and agentic product security.
- Act completed a $40M Series A led by Notable Capital just four months after a $20M seed round led by Bessemer Venture Partners and Team8.
- FAZE Security emerged from stealth with a $6M seed round.
- Featured in Forbes, Pi’s $35M round valued the company at $100M and drew participation from CrowdStrike CEO George Kurtz and Armis co-founders Yevgeny Dibrov and Nadir Izrael.
- Kontext launched publicly with $4M raised in a funding round led by 42CAP, with additional support from a16z CSX and the High-Tech Gründerfonds (HTGF).
- Their domains pair short company names with .Security, an industry-specific domain extension for the security sector.
Cloud security platform Act.Security targets access-based attack paths
Act.Security – Namecheap customer – (Israel)
Overview
- What: Act.Security is the online home of Act Security, a cloud security company developing technology that aims to reduce excessive access across cloud infrastructure.
- How: Act maps access across cloud environments and establishes boundaries around human identities, applications, AI agents, environments, and data. The platform uses cloud-native controls to enforce those boundaries as cloud environments change.
In The News
- In July 2026, Axios reported that cloud-focused Act Security had raised $60M total and emerged from stealth, according to CEO Jonathan Langer.
- The SaaS News confirmed lead investors as Notable Capital, Team8, Bessemer Venture Partners, with additional Investors Startpoint Capital, SVCI, Hetz Ventures, and Claltech
- In December 2025, Calcalist (CTech) reported that Act completed a $40M Series A just four months after a $20M seed round. CTech also noted that co-founders Jonathan Langer and Itay Kirshenbaum previously co-founded medical device security company Medigate, which Claroty acquired in 2021 for approximately $400M.
Act.Security Leadership
According to their About page, Act Security is led by:
- Jonathan Langer: Co-founder and CEO
- Itay Kirshenbaum: Co-founder and CTO
- Stephan Goldberg: Co-founder and CPO
- Ilai Fallach: Co-founder and VP of R&D
Connect with Act.Security
Offensive security platform Faze.Security aims to continuously test enterprise attack surfaces
Faze.Security – GoDaddy customer – (United States)
Overview
- What: Faze.Security is the online home of FAZE Security, an offensive security company developing a platform that continuously tests organizations’ web applications, APIs, and cloud environments for exploitable vulnerabilities. The company was previously known as CYTRIX, and upgraded their domain name from cytrix.io to industry-specific Faze.Security.
- How: At the center of the platform is what FAZE calls its “Agentic Red Team,” which, according to the website, uses autonomous agents trained on attack data from white-hat hackers to continuously test customer environments within defined guardrails. The platform is designed to identify exploitable vulnerabilities and help security teams prioritize remediation.
Company Updates
- FAZE Security announced via PR Newswire on September 11, 2026 that it had emerged from stealth with a $6M seed round led by New Era Capital Partners, with participation from Lockstep VC.
- The company reported reaching 50 enterprise customers, including several Fortune 500 companies, along with roughly 20-fold ARR growth over the prior 18 months.
Faze.Security Leadership
According to FAZE’s Company page, FAZE is led by four co-founders:
- Omer Shirazi: Co-founder and CEO
- Sahar Avitan: Co-founder and CTO
- Yaniv Vaknin: Co-founder and COO
- Udi Cohen: Co-founder CBO
Connect with Faze.Security
Runtime security platform Kontext.Security is built to control what AI agents are permitted to do
Kontext.Security – Cloudflare customer – (Germany)
Overview
- What: Kontext.Security is the online home of Kontext, a Munich, Germany-based company developing a runtime security platform designed to give organizations visibility and control over AI agents’ actions.
- How: Kontext is designed to sit between AI agents and the systems they act on, evaluating each requested action against the agent’s identity, target resource, and assigned task, per SiliconANGLE. The outlet reported that the software currently works with coding agents including Anthropic’s Claude Code and OpenAI’s Codex.
In The News
- In September 2026, SecurityWeek reported that Kontext launched publicly with $4M raised in a funding round led by 42CAP, with additional support from a16z CSX and the High-Tech Gründerfonds (HTGF).
- Around the same time, SiliconANGLE reported that co-founder Jens Ernstberger started the company with Michel Osswald after completing a doctorate in cryptography and computer security at the Technical University of Munich.
Kontext.Security Leadership
Connect with Kontext.Security
Forbes-featured agentic product security platform Pi.Security focuses on vulnerability detection and remediation
Pi.Security – GoDaddy customer – (United States)
Overview
- What: Pi.Security is the online home of Pi, an agentic product security company developing an AI system that aims to identify, prioritize, and help remediate vulnerabilities across an organization’s codebase.
- How: According to the company’s website, Pi continuously ingests a client’s codebase, past security incidents, pentest reports, and tickets to build a running inventory of security history, then traces each vulnerability to its root cause and proposes fixes delivered directly into developers’ existing workflows.
- Why: The company describes this as building institutional security knowledge that “compounds over time” rather than resetting after each incident.
In The News
- In June 2026, Forbes reported that Pi emerged from stealth valued at $100M, having raised $35M in a round led by Brightmind Partners and Third Point Ventures, with additional participation from CrowdStrike CEO George Kurtz and Armis co-founders Yevgeny Dibrov and Nadir Izrael.
Pi.Security Leadership
According to their About page, Pi is led by two co-founders:
- Guy Arazi: Co-founder and CEO
- Yoni Ramon: Co-founder and CPO
Connect with Pi.Security
Why .Security for cybersecurity companies
- .Security directly connects a domain with the security industry, giving cybersecurity companies an industry-specific extension for their online identities.
- As a premium, newer namespace, .Security gives companies a better shot at securing the short, on-brand domain name they want, even when the matching .com is already taken.
- .Security helps a company’s name and extension work together directly, so the name itself can form a complete domain without extra words or characters.
More cybersecurity from the #GenXYZ community
- Fortune-featured AI governance platform Jetstream.Security, founded by former CrowdStrike CPO Raj Rajamani, focuses on visibility and control for enterprise AI systems
- AI-focused company Harmonic.Security supports secure GenAI adoption with browser-based data protection tools
- Cybersecurity platform Abstract.Security utilizes AI to enhance enterprise security analytics
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