Hacker House
Hacker House is a London-based private offensive cybersecurity firm founded in 2016 that provides bespoke penetration testing, red team operations, and security assessment services to global enterprise clients on a direct B2B basis.
- Company typePrivate
- Founded2016
- HeadquartersLondon, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Hacker House does
Hacker House Ltd. is a London-based private offensive cybersecurity firm founded in 2016 (per company timeline; firmographic data references 2015) that delivers bespoke penetration testing, red team operations, and security assessment services to enterprise clients globally. Core offerings include advanced penetration testing focused on zero-day discovery, adversarial simulation using advanced persistent threat techniques, application security testing (web, API, microservice), plus adjacent specialties in blockchain/Web3 audits, infrastructure, hardware/firmware, wireless, malware analysis, and cyber consulting. Pre-engagement scoping is conducted directly with each client, with reports delivered within five business days of engagement completion and pricing structured on a scope-based, multi-year contract basis.
The firm's underlying technology stack is a portfolio of custom and open-source offensive security tools and primary vulnerability research. Named proprietary artifacts include SetupHijack (Windows installer/UAC/Authenticode bypass research), SignToolEx (expired-certificate signtool abuse), OffensiveLua (Lua exploitation scripts for Windows), and iscsicpl_bypassUAC (x64 UAC bypass). Public research outputs include high-risk Microsoft Telnet MS-TNAP vulnerabilities affecting Windows NT 4.0 through Server 2025, Windows Search and PrintNightmare-class analysis, and a 2019 disclosure of a US election voting machine flaw. The firm publishes the educational book 'Hands-On Hacking' and maintains a GitHub open-source presence with 25+ projects, 1,000+ stars, and 5,000+ downloads.
The business model is professional services plus ancillary content monetization: enterprise B2B engagement for pentesting, red team, and consulting engagements priced by scope; plus book and training material revenue via hackerhousebook.com. Go-to-market is direct enterprise field sales with no resellers, marketplaces, or self-serve channels; demand generation is anchored by media coverage (3,000+ mentions across Forbes, Bloomberg, Wired, Sky News), an active security blog, open-source tool releases, and the published book. The firm is founder-owned (Jennifer Arcuri, with Matthew Hickey as co-founder and director), privately held, with no disclosed funding rounds.
Hacker House firmographics
Firmographics- Name
- Hacker House
- Legal name
- Hacker House Ltd.
- Website
- https://hacker.house
- Company type
- Private
- Founded year
- 2016
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Hacker House is a London-based private offensive cybersecurity firm founded in 2016 that provides bespoke penetration testing, red team operations, and security assessment services to global enterprise clients on a direct B2B basis.
- Ownership category
- akta.pro rank
Hacker House industry classification
Industry- Product category
- Offensive Cybersecurity Services
- NAICS
- Other Computer Related Services (541519), Computer Systems Design and Related Services (54151), Software Publishers (5132)
- SIC
- Services-Detective, Guard & Armored Car Services (7381), Services-Computer Programming Services (7371)
- akta.pro primary industry
- Fraud, Cybercrime Investigations & Brand/Dark Web Monitoring (BPAKAHAO)
- akta.pro secondary industry
- Insider Threat Program Design & Risk Assessments (BPAKADAM)
Keywords
Where Hacker House is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Hacker House business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- Penetration Testing Services: Advanced security testing to identify vulnerabilities before attackers do. The team specializes in discovering zero-day vulnerabilities and providing actionable remediation guidance following industry standards like the Penetration Testing Execution Standard (PTES).
- Red Team Operations: Elite adversary simulation using advanced persistent threat techniques to test security posture against sophisticated threats using custom-developed exploits and tools.
- Security Assessments & Consulting: Expert guidance on building and improving security programs with practical, actionable recommendations. Includes threat modeling using frameworks like STRIDE and MITRE ATT&CK.
- Training & Publications: Revenue from 'Hands-On Hacking' book sales and cybersecurity training materials available through hackerhousebook.com.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Penetration Testing - Scope-based pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Hacker House product offering
Product offeringCore offering
Hacker House provides elite offensive cybersecurity services to enterprise clients, delivering penetration testing, red team / adversary simulation, application security, blockchain/Web3 security, infrastructure, hardware and wireless security assessments, malware analysis, and cyber consulting. Engagements focus on discovering zero-day vulnerabilities and simulating advanced persistent threats using custom-developed exploits and tools, with reporting aligned to PTES, MITRE ATT&CK, and STRIDE frameworks. The firm also publishes the 'Hands-On Hacking' book and maintains an open-source security tool portfolio on GitHub.
Product overview
Hacker House is a cybersecurity services company providing elite offensive security services including penetration testing, red team operations, application security, blockchain/Web3 security, infrastructure security, hardware security, wireless security, malware analysis, and cyber consulting. The company also publishes the Hands-On Hacking educational book and develops open-source security tools including SetupHijack, SignToolEx, OffensiveLua, and iscsicpl_bypassUAC available on GitHub. Hacker House operates on a B2B basis, focusing on authorized security assessments and ethical hacking services.
Differentiator
Problem solved
Functional benefit
Products and services
- Penetration Testing Advanced security testing using custom tools and zero-day research to identify vulnerabilities before attackers do, with actionable remediation guidance aligned to industry standards such as PTES. Targeted at organizations seeking elite cybersecurity protection.
- Red Team Operations / Adversarial Simulations Elite adversary simulation using advanced persistent threat techniques and custom-developed exploits and tools to test security posture against sophisticated threats. Targeted at organizations needing validation against real-world APT groups.
- Application Security In-depth security testing of web applications, software, APIs, and microservices, specializing in finding complex vulnerabilities that automated tools miss. Targeted at development and security teams responsible for application portfolios.
- Blockchain/Web3 Security Comprehensive security audits of smart contracts, DeFi protocols, and blockchain applications to secure Web3 infrastructure against sophisticated attacks. Targeted at Web3 projects, DeFi platforms, and blockchain-based organizations.
- Infrastructure Security Advanced infrastructure security assessments covering cloud environments, networks, and critical systems testing. Targeted at organizations requiring validation of underlying IT infrastructure against advanced threats.
- Hardware Security Advanced hardware security assessments including firmware analysis, reverse engineering, and embedded systems testing. Targeted at hardware vendors, IoT manufacturers, and organizations deploying embedded systems.
- Wireless Security
Quantifiable outcome
- Prevented over 1,000 zero-day threats
- +2 more outcomes
Companies that use Hacker House
Customer profileSegments2 records
Ideal customer profiles2 records
Hacker House technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Hacker House partnerships and signals
Strategic signalScale indicators6 records
Recent moves6 records
Expansion highlights4 records
Hacker House competitors and assessment
Company assessmentDirect peers
- Bishop Fox: US-based elite offensive security firm specializing in penetration testing, red team operations, and zero-day research — the closest direct competitor in size, positioning, and service mix to Hacker House.
- Trail of Bits: Boutique US offensive security research firm with similar focus on vulnerability discovery, advanced exploitation, and security tooling — a near-twin in operating model, research output, and product-service mix.
- Coalfire: Cybersecurity advisory firm providing penetration testing, red team, and compliance-driven security assessments to enterprises — directly comparable service portfolio with similar enterprise sales motion.
- Pentest Ltd: UK-based CREST-accredited penetration testing specialist — a regional direct competitor with comparable service focus and similar size profile to Hacker House.
Broad incumbents
- NCC Group: UK-headquartered global cybersecurity services firm offering penetration testing, red team, and source code review — a larger incumbent with overlapping offensive security capabilities, including global delivery footprint Hacker House lacks.
- WithSecure (formerly F-Secure): European-headquartered cybersecurity firm with dedicated offensive security services including penetration testing and red teaming — broader portfolio but overlapping in targeted offensive engagements.
- Mandiant (Google Cloud): Premier red team and incident response firm now part of Google Cloud; competes for the same high-end adversary simulation engagements and represents the kind of well-capitalized incumbent that can outbid Hacker House for enterprise contracts.
- Secureworks: Global cybersecurity services provider with a Taegis XDR platform and offensive security offerings; competes for the same enterprise red team and adversary simulation wallet share at significantly greater scale.
Emerging players
- PortSwigger: Creator of Burp Suite and Burp Suite Professional; offers training and security tooling adjacent to Hacker House's web application security services and 'Hands-On Hacking' book content.
- HackerOne: Bug bounty and vulnerability disclosure platform with a community of ethical hackers; competes for offensive security budgets with a platform model that complements or substitutes for boutique pentest engagements.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
Hacker House social profiles
Digital presenceHacker House financial estimates
Financial estimateRevenue estimate
Valuation estimate
Hacker House leadership team
Management profileNumber of profiles
Profiles2 records
Hacker House funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Hacker House M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Hacker House
What does Hacker House do?
Hacker House provides elite offensive cybersecurity services to enterprise clients, delivering penetration testing, red team / adversary simulation, application security, blockchain/Web3 security, infrastructure, hardware and wireless security assessments, malware analysis, and cyber consulting. Engagements focus on discovering zero-day vulnerabilities and simulating advanced persistent threats using custom-developed exploits and tools, with reporting aligned to PTES, MITRE ATT&CK, and STRIDE frameworks. The firm also publishes the 'Hands-On Hacking' book and maintains an open-source security tool portfolio on GitHub.
Is Hacker House a public or private company?
Hacker House is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Hacker House founded?
Hacker House was founded in 2016. It employs 1 to 10 people.
Where is Hacker House based?
Hacker House is headquartered in London, United Kingdom, in the Europe region.
How does Hacker House make money?
Four revenue lines are on record. Penetration Testing Services are the primary driver. The others are red Team Operations, security Assessments & Consulting and training & Publications.
Who are Hacker House's main competitors?
Direct peers on record are Bishop Fox, Trail of Bits, Coalfire and Pentest Ltd. Broad incumbents are NCC Group, WithSecure (formerly F-Secure), Mandiant (Google Cloud) and Secureworks. Emerging players are PortSwigger and HackerOne.
Does Hacker House have an API?
No public API is recorded for Hacker House.
What industry is Hacker House in?
Hacker House's product category is Offensive Cybersecurity Services. Its primary akta.pro industry code is BPAKAHAO, Fraud, Cybercrime Investigations & Brand/Dark Web Monitoring, with a secondary code of BPAKADAM, Insider Threat Program Design & Risk Assessments. Its NAICS code is 541519 and its SIC code is 7381.