The CyCognito alternative for complete attack surface protection
CyCognito shows what attackers see from the outside. Intruder goes further - combining Attack Surface Management, Vulnerability Management, and Cloud Security Posture Management in one powerful platform.
More than external testing
CyCognito’s outside-in testing is powerful, but it stops at the perimeter.
Intruder goes further with internal scanning, authenticated application testing, and deep cloud posture analysis to uncover the risks attackers exploit once they’re inside.
Behind the scenes, multiple best-in-class scanning engines work together to deliver broad, accurate coverage across your entire environment - from your external perimeter to your internal network and cloud infrastructure.
Unmatched attack surface coverage
Intruder identifies over 1,000 specific attack surface issues. With unparalleled asset discovery across apps, APIs, and cloud accounts, Intruder delivers the most comprehensive dataset on your real external exposure.
Secure your cloud environments
CyCognito surfaces exposed cloud services. Intruder ties those exposures back to misconfigured IAM roles, storage buckets, or policies - giving teams the root cause and faster fixes.
Respond to new threats in hours
Intruder’s Emerging Threat Scans check your full attack surface within hours of a new CVE announcement - shrinking exposure windows faster than catalog-driven updates.
Trusted by 3,000+ companies worldwide































































Continuous asset discovery across your attack surface
Intruder continuously discovers assets across your external and cloud environments, finding everything from subdomains and APIs to cloud instances and login pages. By automatically detecting new or unknown assets the moment they appear, Intruder keeps your inventory complete, accurate, and ready for action.
Focus on what matters most
Once assets are discovered, Intruder highlights the exposures that matter most, such as misconfigurations, exposed databases, and admin panels. Using multiple scanning engines, Intruder detects up to 50% more issues than traditional scanners and helps teams focus on real risks, not noise.
Accelerate remediation workflows
Intruder bridges the gap between security and development with clear, actionable remediation advice and seamless integrations with Slack, Jira, and Azure DevOps.
GregAI, Intruder’s AI security analyst, helps triage findings, draft remediation notes, and explain root causes to accelerate fixes and close the loop between discovery and action.
Proactive protection, every time something changes
Your attack surface is not static, and neither is Intruder. Adaptive scanning automatically checks for new exposures whenever assets appear or configurations change, combining proactive and reactive scanning to keep your internet-facing assets secure as your environment evolves.
Unified visibility for cloud and perimeter
From on-prem to multi-cloud, Intruder brings every asset, exposure, and misconfiguration into one live inventory. Continuous monitoring across AWS, Azure, and Google Cloud ensures you always know what is exposed and what has changed anywhere in your environment.

See what real users think of Intruder

Ben Camilleri
CTO at Westhaven Association
Intruder checks your systems for 75+ web-layer security problems (such as SQL injection and cross-site scripting), 140,000+ infrastructure weaknesses (such as remote code execution flaws), and other security misconfigurations (such as weak encryption configurations, and systems which are unnecessarily exposed). Learn more about what checks we run.
Intruder’s emerging threat scans check your systems for newly discovered vulnerabilities automatically. This kind of proactive action is essential for businesses that don’t have processes in place to research the latest threats and manually run scans for them. Learn more.
Our team of experienced penetration testers will seek to identify serious weaknesses in your external targets that are undetectable by scanners. Continuous penetration testing is a bolt-on service available to Enterprise users and is sold and booked by the day. Learn more.
Intruder is powered by industry-leading scanners, including Tenable, Nuclei, OpenVas, and ZAP. Learn more.