Penetration Testing Services for Websites, APIs and AI-Built Apps

Our security team tests your website, web application or API the way a real attacker would, proves which weaknesses can actually be exploited, and shows your developers how to fix them. We work with small businesses, SaaS teams and enterprises, and with startups that built their product quickly with AI coding tools. Not sure what you need yet? Start with a free initial security review.

500+
Tests Completed
12+
Years Experience
100%
Compliance Ready
24h
Response Time

What Is Penetration Testing?

A controlled, authorized attack on your own systems that shows what a real attacker could do today

Why Penetration Testing Is Essential

Automated scanners flag possible issues, but they cannot prove that an issue is exploitable or show how several small weaknesses chain into a serious breach. A penetration test answers the questions that matter: what could an attacker reach, how quickly, and would you notice?

A vulnerability scan vs a penetration test: a scan is an automated list of potential problems. A penetration test is manual work by security engineers who verify each finding, test the logic of your application and rate every issue by its real business impact.

Outcomes: fixes prioritized by real risk, evidence for compliance, better detection and response, and hardened business-critical workflows.

Who Should Order a Penetration Test

  • Startups and SaaS teams before launch, a funding round or the first enterprise customer
  • Products built quickly with AI coding assistants that now handle real user data
  • Pre-release assurance for major launches and new features
  • Compliance audits (PCI DSS, SOC 2, HIPAA, GDPR) that need evidence
  • Integrating critical third-party services or M&A due diligence
  • Handling payments, personal data, health data or other sensitive information

Our Penetration Testing Services

Security testing tailored to your application, infrastructure and compliance needs

Web Application Pentest

Coverage: public/internal apps, SPAs, auth/session, XSS/SQLi, business logic vulnerabilities.

Output: PoCs, fix recipes, unit-level mitigations, retest.

API & Microservices Pentest

Coverage: REST/GraphQL/RPC, authZ enforcement, rate limits, input handling.

Output: Authenticated exploit sequences, attack trees, API-specific mitigations.

Network & Infrastructure Pentest

Coverage: external perimeter, internal networks, firewall/segmentation, VPN.

Output: Lateral movement paths, privilege escalation sequences, segmentation fixes.

Cloud & Container Security Testing

Coverage: IAM, storage ACLs, serverless, Kubernetes, CI/CD pipelines.

Output: Privilege mapping, least-privilege and secure deployment patterns.

Mobile Application Security Testing

Coverage: iOS/Android, secure storage, API integrations, reverse engineering.

Output: Secure storage/transport guidance, patch steps.

IoT & Embedded Systems Pentesting

Coverage: firmware, wireless protocols, device APIs, OTA mechanisms, hardware interfaces.

Output: Firmware fixes, supply-chain hardening, secure OTA processes.

Red Team / Adversary Emulation

Coverage: multi-week realistic campaigns across cyber/physical/social vectors.

Output: Executive impact narrative, detection gaps, response playbooks, prioritized fixes.

Social Engineering & Physical Tests

Coverage: phishing/vishing, physical entry (with rules), USB drops.

Output: Susceptibility metrics, targeted training, process hardening.

PTaaS: Managed Pentesting as a Service

Coverage: recurring scanning, periodic manual tests, integrated remediation tracking, SLA-backed ops.

Output: Continuous improvement dashboards, prioritized tickets, retests.

AI-Built Application Testing

Coverage: apps created with Claude Code, Cursor, Lovable, Bolt, Replit and similar tools; access control between users, exposed secrets, database rules, server-side validation.

Output: Prioritized findings in plain language, fix steps your team or your AI assistant can apply, retest.

LLM & AI Agent Security Testing

Coverage: chatbots, AI features and agents; prompt injection, data leakage, excessive permissions, tool and MCP integrations.

Output: Attack scenarios with evidence, guardrail and permission fixes, retest.

Secure Code Review

Coverage: white-box review of your repository with read access you grant; authorization logic, secrets, dependencies, risky patterns.

Output: Findings mapped to files and lines, recommended changes, follow-up review.

What We Test in Modern Web Applications and APIs

Most serious incidents today do not come from exotic exploits. They come from broken access rules, weak authentication flows, exposed cloud resources and risky dependencies. Our testing follows the current OWASP standards and focuses on the issues that attackers use most.

Broken Access Control, IDOR and BOLA

We check whether one user can read or change another user's data by changing an ID in a request, and whether regular users can reach admin functions.

Authentication and Session Management

Login, registration, password reset, MFA and session handling, including token expiry, logout and protection against account takeover.

API Authorization and Business Logic

Every API endpoint is tested with different roles. We look for logic flaws such as skipped payment steps, coupon abuse, negative quantities and missing rate limits.

OAuth, JWT, SSO and Multi-Tenant Isolation

Token signing and validation, redirect handling, SSO configuration and the separation between tenants of a SaaS platform.

Dependency and Software Supply Chain Risks

Outdated or vulnerable packages, unpinned dependencies, risky third-party scripts and integrations that can expose your users.

Cloud Misconfigurations and Exposed Storage

Public storage buckets, permissive database rules, exposed admin panels, debug endpoints and secrets left in configuration or build files.

  • OWASP Top 10:2025
  • OWASP API Security Top 10:2023
  • OWASP Web Security Testing Guide
  • OWASP Top 10 for LLM Applications 2026
  • OWASP Top 10 for Agentic Applications 2026

Built with AI? Make Sure It's Secure Before You Launch.

AI coding tools help you build faster. Independent security testing helps you uncover the vulnerabilities that generated code, automated scanners and functional testing may miss.

Penetration testing for vibe coders, solo founders and startup teams who build with Claude Code, Cursor, Lovable, Bolt, Replit and other AI-assisted development tools.

Why AI-Generated Code Still Needs Security Testing

An AI coding assistant writes code that works for the scenario you described. Security problems usually live in the scenarios nobody described: a user who changes an ID in the URL, a request sent directly to the API without the interface, or a database rule that was left open during development.

Not every AI-built application is vulnerable. But when code is generated quickly, it is easy to ship without anyone checking authorization rules, secret handling and database permissions end to end. That is exactly what a security test does.

Why an Independent Review Matters

Your AI assistant may tell you the code is secure. It can only judge the code it can see, in the context you gave it, and it was not designed to attack your running application. An independent tester looks at the live product from the outside, with no assumptions, and tries what a real attacker would try.

You get a second opinion from people whose only job is to find what was missed, plus a clear list of what to fix first.

Common Security Risks in Vibe-Coded Apps

Can one user access another user's private data?

Missing ownership checks let anyone with an account read or edit other customers' records, files or messages.

Are API keys or credentials exposed?

Keys placed in front-end code, public repositories or build files can be copied and used to run up bills or reach your data.

Can authentication or authorization be bypassed?

Checks done only in the browser, weak tokens or unprotected admin routes can let attackers skip the login entirely.

Are database permissions configured correctly?

Open database or storage rules, or missing row-level security, can make the whole database readable from the internet.

Can attackers abuse API endpoints or payment flows?

Endpoints without rate limits or server-side validation invite fraud, free upgrades, spam sign-ups and inflated costs.

Could third-party integrations expose customer data?

Webhooks, analytics, AI APIs and other services can receive more data than they need, or accept requests from anyone.

What to Test Before Launching an MVP or SaaS Product

  • Access control between users, roles and organizations
  • Login, sign-up, password reset and session handling
  • Every API endpoint, including ones the interface does not use
  • Database, storage and backup permissions
  • Secrets in code, front-end bundles and repositories
  • Payments, subscriptions, credits and other business logic
  • Third-party integrations, webhooks and outdated dependencies

How SiteGuarding Helps

We start with a free initial review of your project and tell you which areas carry the most risk. If deeper testing makes sense, we agree a focused scope that fits your stage and budget, test the live application, and deliver a report your team can act on.

Findings are rated by real impact, explained in plain language and come with concrete fix steps that you can apply yourself or hand to your AI coding assistant. After you fix them, we retest to confirm the issues are closed.

Security Testing for LLM Features and AI Agents

There are two different questions here. Code written by AI is still regular code and is tested like any web application. An application that uses AI as part of its functionality, such as a chatbot, an AI assistant inside your product or an agent that calls tools, has additional risks of its own. If your product works with LLMs, AI agents or MCP servers, we test these risks too, following the OWASP Top 10 for LLM Applications and the OWASP Top 10 for Agentic Applications.

Prompt Injection

Direct or hidden instructions in user input, documents or web pages that make the model ignore its rules or act for the attacker.

Sensitive Data Exposure

Leakage of system prompts, hidden context, other users' conversations or internal data the model can reach.

Excessive Permissions

Agents and AI features that can do more than they need: send email, change records, run code or spend money without approval.

Insecure Tool and MCP Access

Tools, plugins and MCP servers that trust the model's output, lack authorization checks or expose files and internal systems.

Unsafe Output Handling

Model output used in web pages, database queries or commands without validation, which can lead to XSS or injection.

Unsafe Integrations and Unbounded Use

Weak links between the AI layer and your data, and missing limits that let attackers drain API budgets or overload the service.

How We Run a Penetration Test

Our structured, safety-first approach ensures thorough testing with minimal risk to your systems

0

Rules of Engagement & Legal

Scope, allowed targets, blackout windows, escalation contacts, NDA and authorization.

1

Recon & Asset Mapping

Passive/active discovery: subdomains, ports, libs, third-parties, hidden endpoints, CT logs.

2

Threat Modeling

Map critical assets and attacker goals; prioritize attack paths by business impact.

3

Vulnerability Discovery

Quality scanners for breadth; manual techniques for logic/privilege/chain flaws.

4

Exploitation (Safe, Reproducible)

Non-destructive PoCs; reversible/documented steps; destructive actions only with explicit sign-off.

5

Post-Exploitation

Assess data access, system control, persistence, lateral movement, privilege escalation.

6

Remediation Guidance

Prioritized code/config changes, WAF rules, IDS/IPS tuning, CI test cases.

7

Retest & Closure

Verify applied fixes; confirm closure for critical/high findings.

8

Reporting & Handover

Executive summary, technical appendix with PoCs, remediation playbook, SIEM/WAF detection recipes.

What You Receive After a Penetration Test

Executive summary (1 to 3 pages): Impact and immediate actions for leadership.

Technical report: Reproducible PoCs, severity (CVSS-style), affected endpoints, remediation steps.

Remediation playbook: Developer-focused fixes, code/config examples.

Retest report for critical/high issues to verify remediation.

Detection & monitoring recipes: SIEM correlations, WAF signatures, IOC lists.

Optional workshops and tabletop exercises for your team.

See what this looks like in practice. 15 anonymized case studies from 2026 show what was broken, what we proved and why a scanner misses it.

View Case Studies
Free initial security review

Your MVP Is Ready. Is It Secure?

Before inviting your first customers, let our security team take an initial look at your application. We offer a free preliminary security review to help identify potential risk areas and recommend what should be tested before launch.

What the free review includes

  • A look at your public website or application and the description you send
  • The main risk areas we see for a product like yours
  • A recommendation on what to test before launch, and a price estimate if testing is needed
  • If you choose to share read access to your GitHub repository or server, a first look at the code

What it does not include

  • Active testing, scanning or exploitation of your systems
  • A full audit, a penetration test report or a guarantee that every vulnerability is found

Free initial assessment. No obligation. Full penetration testing is available when deeper testing is needed.

Please do not send passwords, API keys or source code through this form. If deeper access is useful, we will agree it with you by email first.

Penetration Testing Pricing: Options for Every Stage

From early-stage startups to complex enterprise environments, penetration testing can be tailored to your application's size, complexity and security priorities. Start with a free preliminary review and get a clear recommendation for the next steps.

Starter / Small Business

From $2,500

Typical range $2,500 to $7,000

  • For small websites, online stores and single applications
  • Focused assessment, 3 to 7 tester-days
  • Report with fix steps and one retest
Request Pricing

Professional

$8,000 to $25,000

Typical range, depends on scope

  • For growing SaaS platforms, web applications and APIs
  • Authentication, authorization and business-logic testing, 7 to 20 tester-days
  • Remediation guidance and retest
Get a Quote

Enterprise / Complex Infrastructure

Contact Us for Pricing
  • Custom scope
  • Multiple applications, infrastructure and cloud services
  • SSO complexity and compliance evidence
Discuss Your Project

Red Team / Specialized Testing

Custom Quote
  • Customized adversary simulation
  • Detection and response validation
  • Social engineering, physical and other specialized assessments
Contact Security Team

PTaaS: recurring penetration testing. For teams that ship often: scheduled manual tests, recurring scanning, remediation tracking and retests in one monthly plan. From $2,000 per month, depending on the number of applications and how often you release.

Ask About PTaaS

How is the price calculated?

Mostly by tester time. It depends on the number of applications and APIs, user roles, authentication methods (SSO, MFA), cloud components, testing depth and any compliance reporting you need.

Can we start small?

Yes. Many clients begin with the free review and a focused test of the most critical part of the product, such as login, payments or the main API, and widen the scope later.

Do I have to buy after a quote?

No. You get an individual estimate with the scope written out, without any obligation. The ranges above are typical figures; your final price is agreed before any work starts.

Choose the Right Test for Your Project

Website Penetration Testing

For company websites, online stores and CMS sites such as WordPress, Joomla, Magento or OpenCart: plugins, admin panels, forms and server configuration.

Website penetration testing

Web Application Penetration Testing

For SaaS products, customer portals and custom applications: user roles, APIs, multi-tenant isolation and business logic, with packages for every complexity.

Web application penetration testing

Already Hacked or Infected?

If your website already shows signs of compromise, start with cleanup and protection. Penetration testing comes after the incident is contained.

Website protection and malware removal

Industry Focus: Use-Case Examples

Ecommerce & Retail

Payment flows, cart logic abuse, third-party widget risks.

Finance & Fintech

Transaction integrity, anti-fraud, regulatory evidence.

Healthcare

PHI access paths, API protection, HIPAA/SOC2 evidence.

SaaS & Platform

Tenant isolation, privilege escalation, onboarding security.

Manufacturing & OT

IT/OT convergence, PLC interfaces, supply-chain vectors.

How to Prepare: 10-Point Checklist

1

Target asset list (domains, subdomains, IPs, APIs).

2

Non-production replica or blackout windows.

3

Test user accounts per role (with expiry).

4

Architecture and identity flows (SSO/OAuth).

5

Critical business hours and maintenance windows.

6

Escalation contacts.

7

Temporary ticket access for remediation (optional).

8

Data retention and evidence export needs.

9

Backups and rollback plan with ops.

10

Internal comms to avoid false positives during testing.

Penetration Testing FAQ

What is penetration testing?

Penetration testing is an authorized, simulated attack on your website, application, API or network. Security engineers look for weaknesses, try to exploit them safely and show you exactly what an attacker could reach, so you can fix the most important problems first.

What does a penetration test include?

A typical test includes agreeing the scope and rules, mapping your attack surface, manual and automated testing, safe exploitation of confirmed issues, a written report with evidence and fix steps, and a retest of the issues you have fixed. The exact steps are listed in the methodology above.

How much does penetration testing cost?

It depends on scope and complexity. Focused tests of a small website or application typically start from $2,500, and most SaaS and API projects fall between $8,000 and $25,000. Larger and specialized projects are quoted individually. The initial review is free, and you get a written estimate before any work starts.

How long does testing take?

Most tests take 3 to 20 tester-days, depending on the size of the application and the number of roles and APIs. A draft technical report is typically ready within 5 to 10 business days after testing, together with an executive summary. Expedited options are available for urgent needs.

What is the difference between a vulnerability scan and a pentest?

A scan is an automated check that lists potential issues, often with false positives. A penetration test is performed by people: they confirm which issues are real, chain them together, test business logic that scanners cannot understand, and explain the actual impact.

Do startups need penetration testing?

If your product stores customer data, takes payments or connects to other systems, a security test before launch is a good investment. Enterprise customers and investors often ask for one. You do not need to start with a large project: a free initial review and a focused test of the most critical features is often enough for an early-stage product.

Is AI-generated code secure?

It can be, but you cannot assume it. AI coding assistants produce working code quickly, yet they often miss authorization checks, keep secrets in the wrong places or leave database rules too open, especially when the prompt did not mention security. The only way to know is to test the running application.

Can you test an application built with Claude Code or Cursor?

Yes. We test the application itself, so the tool you used to build it does not matter: Claude Code, Cursor, Lovable, Bolt, Replit or code written by hand. If you share read access to your repository, we can also review the code, which helps find issues faster.

What should I check before launching my SaaS product?

At minimum: access control between users and organizations, login and password reset flows, every API endpoint, database and storage permissions, secrets in code and front-end files, payment and subscription logic, and third-party integrations. The checklist in the AI-built apps section above is a good starting point.

What do I receive after a security assessment?

After a paid penetration test you receive an executive summary, a technical report with reproducible evidence and severity ratings, developer-focused fix steps and a retest report for the issues you fixed. After the free initial review you receive an email with the main risk areas and our recommendation for the next step, not a full report.

Will testing break production?

Our default approach is non-destructive. Any potentially disruptive action happens only with your explicit approval, ideally in a maintenance window or on a staging copy. Every step is documented.

Can you test behind SSO and MFA?

Yes. We need test accounts or a delegated test method for each role. Complex SSO and MFA setups add some time to the scope, and our team has experience with enterprise identity systems.

Do you include retesting?

Yes. After you fix the reported issues, we retest them to confirm they are closed and give you a retest report. PTaaS plans include recurring validation as part of the service.

Ready to Test Your Security?

Do not wait for attackers to find your vulnerabilities. Our penetration testers will identify weaknesses and give you clear, prioritized remediation guidance. Not sure where to start? Ask for a free initial review first.

Request a Free Security Review Get a Quote
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