Independent Assessment • Procurement-Ready Evidence

Security assessments built for executive review.

Formal security attestations for enterprise buyers, supported by OWASP-aligned web application and API assessments — including AI prompt-injection and LLM security reviews for production copilots, RAG systems, and agent workflows. Board-ready reporting, a forwardable executive summary, and a formal security attestation letter.

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Point-in-time • Evidence-backed • Reviewer-friendly
Validation-focused
Practical exploitability & impact reasoning—not noise.
OWASP aligned
Clear taxonomy for reviewers and remediation owners.
Diligence-ready
Artifacts designed to pass procurement scrutiny.

Assessment Overview

Fixed Fee
  • ✓ Executive Summary (forwardable PDF)
  • ✓ Findings with reproducible evidence
  • ✓ Independent Security Attestation (signed, point-in-time)
  • ✓ Optional remediation validation (subsequent engagement)
expedited reviews available

limited availability • inquire below

Typical timeline
7-10 business days
Fast scoping → focused testing → clean artifacts. Expedited options available for diligence deadlines.

Firm Capabilities

Independent assessment artifacts built for enterprise diligence.

Harbinger Security specializes in point-in-time security assessments designed to produce forwardable, procurement-friendly deliverables—without overclaiming or noise.

Web App & API Security Assessment

OWASP-aligned assessment focused on exploitable risk across authentication, authorization, business logic, and application data exposure.

B2B SaaS • Portals • Dashboards • REST/GraphQL

External Exposure Extension

Optional scope extension to review externally reachable services, access paths, and exposure informed by real-world attack patterns—structured for diligence, not “network pentesting.”

Attack Surface • Access Risk • Misconfigurations

Cloud-Native Assessment

For fully cloud-native environments: configuration and identity-focused assessment scoped to practical risk (not tooling output). Best fit when there is no on-prem infrastructure.

Cloud IAM • Exposure • Critical Config Review

AI Prompt Injection & LLM Security Assessment

Focused assessment of prompt injection, role confusion, context contamination (RAG), and tool/agent abuse risks in AI-enabled features. Validates whether untrusted language input can cause data exposure, unauthorized actions, or business logic manipulation.

Copilots • RAG • Agents • Tooling / Function Calls

Engagement Models

Point-in-time diligence—plus optional ongoing validation.

Engagement structure is determined by scope, environment complexity, and review requirements. All engagements produce buyer-facing artifacts suitable for diligence and procurement review.

Tier I

Point-in-Time
Core Web App & API

Designed for enterprise sales diligence and procurement review. A focused, defensible posture assessment at a specific point in time.

  • ✓Executive Security Summary
  • ✓Technical Findings Report
  • ✓Independent Security Attestation
  • ✓Optional AI Prompt Injection Add-On
$7,000 — $12,000
Typical Range

Tier II

Expanded
Assessment + Exposure

For larger platforms or broader exposure. Adds external exposure review and/or cloud-native scope based on environment.

  • ✓Everything in Tier I
  • ✓External Exposure Extension
  • ✓Optional Cloud-Native Scope
  • ✓Limited Re-test Window
$12,000 — $23,000
Typical Range

Tier III

Ongoing
Advisory & Validation

For organizations seeking an ongoing trusted relationship—not one-off testing. Limited availability, structured cadence.

  • ✓Ongoing advisory access
  • ✓Scheduled reassessment cadence
  • ✓Priority re-testing & updates
  • ✓Updated diligence artifacts as needed
$4,000 — $10,000 / month
Typical Retainer Range

Standalone

Fixed Fee
AI Prompt Injection & LLM Security

Independent assessment of AI-enabled features (chat, RAG, copilots, and agent workflows) focused on prompt injection, authorization confusion, context contamination, and tool misuse. Designed for enterprise diligence and customer assurance.

  • ✓Executive Summary (forwardable)
  • ✓Findings with reproducible evidence
  • ✓Mitigation guidance (prompt + architecture)
  • ✓Independent attestation (scope-bound)
$6,500 — $9,500
Typical Range
Exact fees are determined during a brief scoping call and may vary by application complexity, number of roles/workflows, and review requirements.

Deliverables that close deals.

Clean artifacts stakeholders can forward — and reviewers can trust.

Redacted examples of client deliverables are provided below to demonstrate structure, tone, and assessment rigor.

Redacted Executive Security Summary

One-page, stakeholder-ready overview: scope, methodology alignment, and point-in-time risk posture.

View PDF

Sample Security Attestation

Formal, forwardable point-in-time attestation letter designed for procurement and external review.

View PDF

Sample Finding Page

A single, redacted finding showing evidence standards and risk reasoning without oversharing.

View PDF

Engagement Flow

A scoped, defensible assessment — delivered as buyer-facing evidence.

The goal is not volume. The goal is clarity: validated issues, reproducible proof, and artifacts that survive diligence.

01 • Scope
Targets & assumptions
Define apps/APIs, roles, environments, and test boundaries.
02 • Test
Validation-focused testing
Confirm exploitability and business impact; avoid noise.
03 • Report
Evidence & fixes
Write findings the way reviewers read: concise, specific, reproducible.
04 • Attest
Signed artifacts
Deliver executive summary + security attestation aligned to scope.

Request a Quote

Start a confidential conversation about your application’s security posture. No obligation, no marketing follow-ups.

Please use a company email address.

Assessment interest

Initial inquiries are treated confidentially and do not initiate marketing outreach.

Prefer email? [email protected]

Diligence Artifact Preview

Independent Security Attestation

A formal point-in-time letter summarizing scope, methodology alignment, and observed posture—designed to be forwarded to buyers and reviewers.

Harbinger Security Attestation Seal
Classification
Point-in-time
Diligence-Ready
A scoped posture classification derived from validated findings severity and exploitability within the assessed scope.
Not a compliance claim • Scope-bound
Excerpt

Harbinger Security Consulting, LLC attests that it conducted an independent security assessment of the in-scope web application and associated APIs identified by the commissioning organization. Testing was conducted using an OWASP-aligned methodology and focused on validated, reproducible assessment evidence.

Signed
Anthony D’Onofrio, PhD
Principal Security Consultant • Harbinger Security
Date
2026-01-21
All attestations are tied to scope, assumptions, and date.