Find the Weaknesses Before They Become an Incident
The most damaging security problems are rarely limited to an outdated package that an automated scanner can identify. They are often hidden in application logic: an API that trusts a supplied user ID, a payment flow that can be replayed, a file download missing an ownership check, a forgotten diagnostic route, or sensitive data written to logs.
Guru-host provides evidence-led security audits for SaaS platforms, e-commerce systems, and custom web applications. We examine how your software actually works across source code, APIs, data, integrations, and infrastructure, then turn the findings into a practical remediation plan your developers can use.
You receive more than a list of warnings. You receive evidence, priorities, implementation guidance, and a clear route to reducing risk.
What We Review
Every engagement is scoped around your application, but a comprehensive review can include:
- Application attack surface — routes, APIs, callbacks, background jobs, administrative tools, diagnostic endpoints, and exposed services
- Authentication and access control — login flows, sessions, tokens, roles, permissions, tenant isolation, ownership checks, and impersonation features
- Business logic — payment processing, credits, refunds, order state, provider callbacks, replay protection, and other workflows where a valid request can still cause an invalid result
- Files and user-controlled input — uploads, downloads, storage paths, generated filenames, MIME validation, path traversal, server-side requests, and signed access
- Secrets and sensitive data — credentials in source code, environment configuration, verbose errors, debug tooling, logs, personal data, and retention practices
- Database integrity — cross-user or cross-tenant relationships, orphaned records, stale tokens, inconsistent data, and evidence that a vulnerable workflow may already have been abused
- Infrastructure and deployment configuration — Linux and container configuration, web server exposure, TLS, CI/CD practices, permissions, and production hardening
- Third-party integrations — payment providers, accounting systems, file-processing services, webhooks, email, messaging, and other trusted external connections
We combine targeted tooling with careful analysis of the application’s architecture and business rules. Findings are reviewed in context rather than copied directly from scanner output.
How the Audit Works
- Scoping and authorization — we identify the applications, repositories, environments, integrations, and data that are in scope. Testing boundaries are agreed in writing before work begins.
- Architecture and attack-surface mapping — we document how users, applications, data stores, APIs, and external providers interact.
- Source and configuration review — we trace high-risk flows through the code and deployment configuration, with particular attention to trust boundaries and user-controlled data.
- Safe validation — where an appropriate staging environment or disposable dataset exists, we validate findings without placing production systems or customer data at risk.
- Prioritisation and handoff — findings are grouped by severity, exploitability, business impact, and remediation dependency.
- Remediation and retesting — if requested, we can work with your developers, implement agreed fixes, or verify that completed remediation closes the original risk.
We favour read-only inspection and non-destructive checks. No intrusive production testing, data modification, or third-party provider action is performed without explicit approval.
What You Receive
- An executive summary explaining the major risks in plain business language
- A technical findings report with evidence, affected components, impact, and recommended remediation
- A prioritised roadmap separating immediate production blockers from longer-term hardening
- Developer-ready GitLab, GitHub, or Jira work items, when required
- Implementation guidance, acceptance criteria, and verification steps for each remediation workstream
- A record of clean findings and areas reviewed, not only the problems discovered
- An optional retest report confirming which risks have been resolved and what remains open
All deliverables belong to you. We can work under an NDA and keep reports, evidence, and issue trackers private to your organisation.
A Real Audit Engagement
For one multi-portal software business, we reviewed five Laravel applications and a shared code package covering more than 1,000 application routes. The platform included customer and administrator portals, file processing, payment and accounting providers, API callbacks, role-based access, and a production-shaped database.
The review went beyond dependency scanning. It examined authorization and tenant boundaries, payment finalisation, file ownership and storage, exposed operational routes, provider callbacks, logging, secrets, and database integrity.
The final handoff converted the evidence into nine prioritised remediation workstreams. Each workstream included the underlying findings, affected code paths, a proposed implementation sequence, acceptance criteria, and verification commands. This allowed management to understand the risk while giving developers concrete work they could schedule and complete.
The client and vulnerability details remain confidential. Your engagement will be handled the same way.
Who This Service Is For
- SaaS and e-commerce companies running custom applications
- Businesses with multiple customer portals, APIs, or third-party integrations
- Development agencies that need an independent review before handing over a system
- Companies preparing for investment, enterprise customers, insurance review, or a major release
- Teams that have inherited a legacy application and do not know where the security debt is
- Organisations that have already experienced an incident and want to identify the underlying weaknesses
If you only need an automated vulnerability scan or a compliance certificate, this is probably not the right service. This is a hands-on technical review designed to find application-specific risk and help your team fix it.
Scope and Pricing
Audits are quoted after a short discovery call. The cost depends on the number and size of applications, languages and frameworks, integrations, environments, available documentation, and whether authenticated runtime validation is required.
Before work starts, you receive a written scope covering:
- Systems and repositories included
- Review methods and testing boundaries
- Access and environment requirements
- Deliverables and reporting format
- Estimated schedule and fixed project price
Remediation can be handled by your existing developers, delivered by Guru-host as a separate project, or supported through our Managed DevOps Retainer.
Frequently Asked Questions
Is this the same as a penetration test?
Not exactly. The service can include safe runtime validation, but its main strength is combining source-code, configuration, data-flow, and architecture review with application-specific business-logic analysis. It is not presented as a regulatory certification or a substitute for a formally accredited assessment where one is required.
What access do you need?
Access depends on scope. It may include source repositories, architecture documentation, redacted environment configuration, a local or staging deployment, route and schema information, and a sanitised database snapshot. We agree the minimum necessary access before the engagement begins.
Will you test our production system?
Production is treated as sensitive by default. We prioritise read-only inspection and use staging systems, disposable data, and mocked or sandbox provider integrations for active validation whenever possible. Any production check requires specific written approval.
Can you work with our existing development team?
Yes. Findings can be delivered in the issue tracker your team already uses, with enough technical context, acceptance criteria, and verification guidance for developers to implement the fixes efficiently.
Can you fix the issues you find?
Yes. Remediation is scoped separately so the audit remains clear and independent. We can implement fixes directly, support your developers, review proposed changes, and perform a final retest.
Is the report confidential?
Yes. Reports and evidence are shared only with authorised contacts. We can work under your NDA, use your private issue tracker, and follow agreed rules for handling source code, credentials, and customer data.
Start With a Confidential Scoping Call
Tell us what your application does, how many components it has, and what concerns you most. We will propose a practical scope without turning the conversation into a sales process.
📧 [email protected]
📞 +44 1288 255353
Or use our contact form and mention security audit.