Intruder

What the company sells

Intruder sells a single platform for continuous scanning across infrastructure, apps and cloud environments. Intruder was founded in 2015 by Chris Wallis to help solve the information overload crisis in vulnerability management. Intruder Systems Ltd completed the AICPA Service Organization Control (SOC) 2 Type 2 audit. The Intruder portal runs as a SaaS environment with logical data separation between clients' datasets.

Intruder runs emerging threat scans within hours of new critical vulnerabilities going public. Intruder checks systems for 170,000+ infrastructure weaknesses, 75+ web-layer security issues and other misconfigurations. Intruder emerging threat scans check systems for newly discovered vulnerabilities automatically, as soon as a check is available. Intruder is powered by scanners including Tenable, Nuclei, OpenVas, and ZAP. Intruder offers internal target scanning only on the Pro and Enterprise plans.

Intruder describes attack surface management as the continuous process of discovering, assessing, and reducing every digital asset an attacker can reach, including systems that are unknown or unmanaged. Port scans run daily in Intruder to track what is exposed. New service scans trigger in Intruder when something in the environment changes, and emerging threat scans run when a major new vulnerability is disclosed. The Intruder attack surface view shows every monitored port, the service running on it, and the version behind it, with a screenshot of each web service. Users of the Intruder attack surface view can search or filter by port, service, product, host status, or certificate expiry.

Intruder cloud security needs no agents and connects to AWS, Azure, and Google Cloud accounts. Intruder connects to cloud accounts using read-only access, and nothing is deployed into the infrastructure. Intruder scans container images at the registry level. Intruder shows cloud misconfigurations, exposed secrets, insecure permissions, CVEs, and attack surface issues in one place.

A ZAP-powered scanner in Intruder runs over 75 application checks for injection flaws, misconfigurations and zero-days. The same Intruder scanner integrates with CI/CD pipelines through GitHub, GitLab, Jira and Azure DevOps, and prioritizes results with remediation advice.

Intruder takes a white-box approach, working from source code. Intruder's agents are built and trained by CREST-certified pentesters and validate every finding against the application. Intruder delivers AI pentest results in a report containing an executive summary, full technical details, and remediation guidance. Intruder formats the AI pentest report to serve as compliance evidence for frameworks like SOC 2, ISO 27001, PCI DSS, and Cyber Essentials. Intruder also connects to a Bitbucket code repo to run a pentest on demand.

Intruder integrates with Jira, GitHub, GitLab, Azure DevOps, and ServiceNow for issue tracking, Slack and Microsoft Teams for alerts, Drata and Vanta for compliance, and Microsoft Sentinel for SIEM. Intruder syncs container images from Docker Hub accounts for scanning. Intruder syncs targets from a Cloudflare environment and scans them for vulnerabilities. Intruder supports Okta SSO for authenticating users. Intruder prices the Cloud and Pro plans as a base fee plus a fee-per-target. Intruder quotes Enterprise pricing separately, because it depends on requirements and the size and complexity of the customer's systems. Customers can choose either a monthly rolling plan, which can be cancelled at any time, or an annual plan.

Ravelin uses Intruder for continuous vulnerability scanning of its payment systems. Brainlabs relies on Intruder to find unknowns as new acquisitions reshape its attack surface. Hill & Smith uses Intruder to uncover hidden assets and expand visibility of its attack surface. Litmus uses Intruder to automate security and protect customer data. Surveil partnered with Intruder to gain attack surface visibility.^{[1][5][6][7][8][9][10][11]}

Categories

• Vulnerability management (primary category)
• External attack surface management
• Cloud security posture management
• Penetration testing and red team services
• Compare Intruder with companies in the same categoryside by side

Headquarters

London, United Kingdom^[2]

Founded

2015^[2][4]

Ownership

Not established from our sources

CISO on record

Not yet on our record. Send a verified source

Website

intruder.io

Products and services

Product names as the company writes them; what each does, in our words, from the company's own product pages. Never how well it does it.

• Attack Surface Management^[1][8]

  Finds assets outside an inventory and shows monitored ports and services.

  It connects to AWS, Azure, Google Cloud, and Cloudflare accounts and takes any domains and IPs. The attack surface view shows every monitored port, the service running on it, and the version behind it.

• Application Security^[3]

  Continuous dynamic application security testing for web apps and single-page apps.

  Application Security provides continuous dynamic application security testing (DAST) for web apps, single-page apps and underlying infrastructure, including authenticated scanning behind login pages. A ZAP-powered scanner runs over 75 application checks and integrates with CI/CD pipelines through GitHub, GitLab, Jira and Azure DevOps.

• Cloud Security^[1][3][9]

  Agentless scanning across AWS, Azure and Google Cloud.

  Cloud Security runs agentless scanning across AWS, Azure and Google Cloud for misconfigurations, insecure permissions, exposed secrets and critical vulnerabilities. CSPM checks run daily and trigger when the environment changes. Intruder scans container images at the registry level.

Competitors and alternatives

The other companies on our record filed under the same categories, category by category: first those that lead with that category and share more of Intruder's categories, then alphabetical. A list from the record, never a ranking.

• On vulnerability management, Intruder competes with ConnectSecure, Qualys, Rapid7, Tenable, Cognition, Dynatrace, Nucleus Security, Halo Security, Astra Security, Attaxion and 43 more.

• On external attack surface management, Intruder competes with Attaxion, Censys, CyCognito, Hadrian, IONIX, Halo Security, Bishop Fox, Bitsight, BreachLock, ConnectSecure and 25 more.

• On cloud security posture management, Intruder competes with RAD Security, SAIC, Cyscale, Lacework, Sonrai, Sysdig and Upwind.

• On penetration testing and red team services, Intruder competes with Halo Security, Astra Security, Bishop Fox, BreachLock, NCC Group, NetSPI, Red Sentry, ABIR Networks, Cobalt, Millennium Corporation and 36 more.

What review platforms show

The headline rating and review count each platform showed in public search results on the day we looked, with the link. We do not read or reproduce the reviews, and a rating is the platform's, not ours.

• G2 · no rating shown · 223 reviews^[13]seen November 12, 2026

References

Every fact above cites one of these by number. Tier A is the company itself, a regulator or a filing; tier B is trade or business press.

1. [1]intruder.ioIntruder · intruder.io · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
2. [2]CareersIntruder · intruder.io · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
3. [3]Intruder | Stop Breaches Before They StartIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
4. [4]Intruder About Us | Providing Effortless Cyber SecurityIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
5. [5]Intruder Security | How We Keep Your Data SecureIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
6. [6]Solution TemplateIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
7. [7]Intruder Pricing | Plans & Bolt-onsIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
8. [8]Attack Surface Management for Shadow IT and Exposures | IntruderIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
9. [9]Cloud Security for AWS, Azure and Google Cloud in One View | IntruderIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
10. [10]AI Pentesting: On-Demand Web App Pentests in Hours | IntruderIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
11. [11]Integrations | Jira, Slack, Vanta, AWS & MoreIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
12. [12]Customer Success Stories | IntruderIntruder · undated page, accessed November 12, 2026 · Tier A: the company, a regulator or a filing
13. [13]Intruder Reviews 2026: Details, Pricing, & FeaturesG2 · undated page, accessed November 12, 2026 · Tier C

Last verified November 12, 2026. Our code found the quoted passage behind each fact on its source page when the fact was recorded, and re-checks every record against its sources each month.

Recorded November 12, 2026, expanded November 12, 2026 from the references above.

Work for Intruder? Suggest a correction to a fact on this page (with a source on your own domain), or claim this entry by publishing a small file on your domain.