What is Intruder.io?
Intruder is a continuous external vulnerability scanner aimed at SMBs that combines network, infrastructure, and web application scanning with emerging threat alerts. It also sells AI-powered web app pentests per test.
Comparison at a glance
| Aspect | Barrion | Intruder.io |
|---|---|---|
| Scan type | Passive (read-only), production-safe, no attack payloads | Active external scanning across network and web assets |
| What it finds / Use case | Web app misconfigurations, TLS/headers, cookies, exposure, drift | Network CVEs, exposed services, web vulns, emerging threats |
| Production | Read-only checks, built for production | External active scans, can probe live infrastructure |
| Remediation | Step-by-step fixes per finding, PDF/CSV export | Findings with guidance, prioritization, tracker integrations |
| Pricing | Free tier, paid for monitoring and advanced checks | Free plan plus Cloud, Pro and Enterprise tiers, with AI web app pentests from $3,500 per test |
| Continuous AI pentest, checked against the live app | Yes. AI agents test your app on a schedule or on demand, and findings are checked against the live app before the report | Continuous external scanning, plus on-demand AI web app pentests bought per test |
Intruder.io facts checked 2026-09-26 on the vendor's own site: Intruder pricing.
Who Barrion is best for
Engineering-led SMB teams that want production-safe, continuous web app monitoring and clear remediation without active scanning or network coverage overhead.
Who Intruder.io is best for
SMB teams that want a single continuous scanner across external network and web assets and are comfortable with active probing of their perimeter.
Frequently asked questions
Is Barrion a replacement for Intruder?
Only partly. Intruder is a continuous external scanner that covers network, infrastructure, and web with active probing, and it also sells AI web app pentests per test. Barrion is an AI pentesting and passive monitoring platform focused on the web application layer with production-safe checks. If you need external network and perimeter scanning, Intruder remains the better fit. If your priority is continuous web app monitoring and clear remediation, Barrion fits.
Can I use Barrion and Intruder together?
Yes. A common pairing is Intruder for external network and emerging threat coverage across the perimeter and Barrion for continuous, passive web app monitoring plus AI pentesting on the app layer. They cover different surfaces and do not conflict.
How is Barrion priced compared to Intruder?
Barrion has a free tier with core checks and paid plans for monitoring and advanced features. Intruder publishes a free plan and paid tiers on its pricing page, with custom Enterprise pricing and AI pentests sold per test. Barrion is usually the lower-friction entry for engineering teams that only need the web app layer.
Does Barrion test in production safely?
Yes. Barrion's monitoring only runs passive, read-only checks and never sends attack payloads, so it is safe to run continuously in production. Intruder uses active external scans, which are usually fine on infrastructure but require more care on application endpoints.
Summary
Barrion and Intruder cover overlapping but distinct ground. Use Barrion for passive, always-on web app monitoring and audit-ready evidence. Use Intruder for active external network and web coverage. Many teams pair them: Intruder for the perimeter, Barrion for the web app layer.
Explore Barrion further
Try the same checks Intruder.io runs against your own site with the free website security scan (no signup), browse our full tool catalog covering TLS, security headers, CSP, cookies, DNS, and email auth, or read per-check explainers in /learn for the background on what each test means and why it matters. If you want a deeper look at how Barrion stacks up across the market, the full Barrion vs competitors comparison walks through the trade-offs in one place, and the pricing page shows what's included in each plan.