Continuous External Monitoring

Your scanner checks CVEs.
We check what an attacker would actually try.

Behavioral security agents — built for and deployed at Tier 1 banks — scan your domains, user flows, and APIs continuously. Findings arrive as dossiers with attack chain analysis, CISO risk scores, and engineer-ready remediation.

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Arcana Sentinel RESTRICTED
CASE ARC-2026-047
TARGET XXXXXXXXXX · Financial Services
DOMAIN XXXXXX.com
EMPLOYEES 2,100 – 5,000
Executive Summary
4 critical and 11 high-severity exposures identified across 3 attack surfaces during a 72-hour autonomous assessment.
8.4 / 10 — CRITICAL
Findings
CRITICAL · CVSS 9.1
Authentication bypass — OAuth token via crafted redirect
HIGH · CVSS 8.7
Session token exposure via user flow XXXX
HIGH · CVSS 7.4
XXXXXXXXXXXXXXXXXX
The Problem

External attack surface monitoring tools scan for known vulnerabilities. They check what is already in a database.

An attacker does not consult a database.

An attacker creates an account. Follows a password reset flow. Chains three medium-severity findings into a critical exploit. Submits a form that no one realized was an API endpoint.

Static scanning misses behavioral vulnerabilities by design. Arcana Sentinel was built to find what scanners cannot see.

The Agent
[14:22:07] Initiating user flow simulation
[14:22:09] Creating test account
[14:22:11] Following standard onboarding flow
[14:22:14] ANOMALY: Redirect parameter unsanitized
[14:22:14] Chaining to token extraction attempt
[14:22:16] CONFIRMED: OAuth token accessible via crafted redirect
[14:22:16] Severity: CRITICAL (CVSS 9.1)
[14:22:16] Logging to dossier: Finding ARC-047-C1
[14:22:17] Continuing user flow simulation...
Session: 72h autonomous · Findings: 15 · Critical: 4

Sentinel tests like an adversary, not a checklist.

Most external monitoring tools enumerate known vulnerabilities. Sentinel simulates adversarial behavior — creating accounts, traversing user flows, chaining findings across attack surfaces.

Originally deployed for Tier 1 banking environments, where behavioral exploits consistently bypass signature-based detection.

72-hour autonomous assessment. No agent installed. No credentials required. No production impact.

METHODOLOGY: BEHAVIORAL SIMULATION + ATTACK CHAIN ANALYSIS
NOT: STATIC CODE ANALYSIS / SIGNATURE MATCHING / CVE SCANNING
The Deliverable

The report is the product. Not a dashboard. Not an alert. A dossier built for your board.

Every assessment produces a single institutional-grade document: attack chain analysis written for technical and executive audiences, CISO risk scores with methodology notes, and fix prompts your engineering team can action the same day.

The format was built to satisfy a Tier 1 bank's risk committee. It will satisfy yours.

Finding Classification
Critical / High / Medium / Low with CVSS methodology notes explaining rationale. Defensible in a board review.
Attack Chain Analysis
Step-by-step reconstruction of how findings chain into exploits, not just isolated vulnerability listings.
Fix Prompts
Each finding includes engineer-ready remediation instructions and estimated time to remediate.
Responsible Disclosure

We have already found vulnerabilities in companies you recognize.

Arcana Sentinel began as a responsible disclosure program. Before accepting commercial engagements, we scanned and reported critical vulnerabilities to organizations across financial services, healthcare, and enterprise SaaS.

DateIndustrySeverityStatus
2026-Q2Insurance (MGA)CRITICALPENDING
2026-Q2Financial ServicesHIGHPENDING
2026-Q2Insurance BrokerageHIGHPENDING
2026-Q2Agriculture TechnologyHIGHPENDING
2026-Q2User Research PlatformHIGHPENDING
2026-Q2Education (K-12 SIS)HIGHPENDING

If we've already scanned your domain, you'll receive the report either way.

The question is whether you'd prefer to know first.

Request Assessment →
Assessments conducted under standard responsible disclosure protocols.
No production impact. NDA available on request. Response within 2 business days.