Website Penetration Testing
European website penetration testing by OSCP-certified engineers: manual, evidence-based, fixed price with a free retest. From EUR2,500. NDA, EU-wide.
Website penetration testing is where an experienced engineer attacks your site the way a real intruder would, by hand, to find the flaws that actually let someone in before someone malicious does. SafetyBis runs manual, evidence-based tests for businesses across Europe, and every finding comes with proof, a severity you can trust, and a fix your developers can act on, not a scanner export you are left to decode.
There is a large gap between running a tool and testing a site. A tool checks for patterns it recognises. A tester reasons about how your application works, where the trust boundaries are, and how a small oversight in one place combines with another to become a full compromise. That reasoning is the whole product.
What website penetration testing covers
A proper test looks at your site the way an attacker with time and intent would: not just the login page, but the account area behind it, the APIs the front end calls, the payment flow, the file uploads, and the assumptions your code makes about who is doing what. The goal is to find the exploitable issues and show you exactly how they work.
If you are searching for the best website for penetration testing or comparing web penetration testing services, the question to ask any provider is simple: do you test by hand, and will you show me how you exploited each finding? If the answer is a scanner report, keep looking.
Manual testing, not a scanner export
This is the line that matters most, so we will be blunt about it. A great deal of what is sold as penetration testing is a vulnerability scan with a cover page. It is cheaper to produce and it looks thorough, and it will not find the thing that gets you breached.
An automated scanner does not understand that your API returns another user’s invoice when you change an ID, because to the tool that is a valid 200 response. It cannot tell that your two-step checkout can be jumped straight to the confirmation page, or that a support-agent role can quietly reach billing functions. Business logic has no signature. Only a person, testing the way an attacker thinks, finds it. Our engineers hold OSCP and OSWE certifications, which are hands-on, exploit-what-you-find qualifications rather than multiple-choice ones, and that is the standard the work is done to.
How we test
Every engagement follows a clear methodology aligned with the OWASP Testing Guide and ASVS, so nothing is left to chance, but the depth goes wherever the interesting behaviour is. Here is what actually happens.
Scoping
We start with a free scoping call to agree what is in scope, which user roles to test, whether the test is authenticated, and how to avoid disrupting anything live. You get a fixed price from this, not an open-ended meter.
Reconnaissance and mapping
The engineer maps the whole attack surface: every page, input, parameter, API endpoint, authentication mechanism and third-party integration. Tools like Burp Suite, nmap and ffuf handle the enumeration, building the picture that the manual testing then works through.
Testing and exploitation
This is the core of the work. The engineer tests each area by hand: manipulating requests, chaining flaws, trying the things a scanner cannot express. Where a finding is exploitable, it is safely proven rather than assumed, so what you receive is confirmed and reproducible, not a maybe.
Safe exploitation
Proving a flaw is real does not mean damaging your site. We demonstrate impact carefully, agree any intrusive steps in advance, and can run the noisier checks out of hours. The aim is evidence, not disruption.
Reporting
You get two documents: an executive summary for leadership that explains the business risk in plain language, and a technical report your developers work straight from. Each finding carries its CVSS score, its real-world impact, the exact steps to reproduce it, and a prioritized fix.
Vulnerabilities we find
The specifics vary by site, but the categories that lead to real compromises are consistent. These are where the serious findings usually live.
Broken access control
The most common source of high-impact findings. IDOR flaws let a user read or change data that is not theirs by altering an identifier. Missing server-side checks let a normal account reach admin-only actions. We test these by trying every action as every role, not by reading the documentation.
Injection and cross-site scripting
SQL injection still appears in older custom code and in features nobody thought of as sensitive. Stored cross-site scripting is more common: a field that renders attacker-controlled markup back to an admin, quietly stealing a session and, with it, the keys to the site.
Authentication and session flaws
Password reset links that never expire, sessions that survive a logout, weak or missing multi-factor enforcement, tokens that can be guessed or replayed. Getting authentication slightly wrong is one of the easiest ways to hand an attacker a valid account.
Server-side request forgery and injection to code execution
SSRF lets an attacker make your server fetch internal resources it should never expose, which in a cloud environment can reach metadata endpoints and credentials. File uploads, template injection and unsafe deserialization are the paths that turn a web bug into full code execution on your server.
Business-logic abuse
The findings a scanner will never produce. Buying something for a price you set, redeeming a voucher more times than allowed, racing two requests to double a balance, escalating your own role through a legitimate feature. These come purely from understanding how your application is meant to work and then breaking those assumptions.
Want this tested on your own systems?
Free 20-minute scoping call, a fixed price with no hourly surprises, and a free retest once you fix what we find.
Tools and methodology
The tools support the tester; they do not replace them. Being clear about the method is part of being a serious provider rather than one of the many top penetration testing companies that all describe the same scan.
The frameworks we follow
Testing is structured around the OWASP Testing Guide, the OWASP Top 10 and ASVS for coverage, and mapped to MITRE ATT&CK where it helps you understand the attacker’s path. This gives you a repeatable, recognised basis for the work rather than an ad-hoc poke around.
The tools we use
Burp Suite for intercepting and manipulating traffic, nmap for network and service discovery, ffuf for content and parameter discovery, and a range of purpose-built and custom scripts. If you are looking for the best tools for website penetration testing, they matter, but what matters more is the engineer driving them.
What you get
The report is the product, and it is written to be used by two very different audiences at once.
Compliance and standards
A test that cannot be shown to an auditor is only half the job for a regulated business, so the deliverables are built to satisfy the frameworks you answer to.
PCI DSS and payment environments
PCI DSS 4.0 requirement 11.4 requires regular penetration testing for environments that handle card data. Our reports and the attestation letter are written to satisfy that requirement and the conversation with your acquirer or assessor.
ISO 27001, SOC 2 and beyond
The work maps to ISO 27001 Annex A.12.6 on technical vulnerability management and supports the SOC 2 security criteria. For firms in scope of GDPR, DORA or NIS2, we align the report to the testing expectations those regimes carry.
How to choose a testing provider
Search for the top 10 penetration testing companies and you get a list of firms that all say the same things. The differences that actually matter are harder to see from a homepage, so here is what to press on before you sign.
Ask whether the testing is manual and who does it, because a named, certified engineer working by hand is a different product from an offshore scan with a template report. Ask to see a sample report, redacted, and check whether findings come with real reproduction steps or just severity labels. Ask whether a retest is included, since a provider confident in their work fixes-and-verifies rather than charging again. And ask how they avoid disruption and how they handle your data, because a serious firm has clear answers on both. The best providers are not the ones with the longest client logo wall; they are the ones who will tell you exactly how they broke in and how to stop the next person.
Pricing
A website penetration test is a fixed-price project, scoped by how many applications and roles are in play, whether testing is authenticated, and how complex the app is. Here is the shape of a typical European engagement.
| Engagement | What’s included | Timeline | Price |
|---|---|---|---|
| Essential | Single web application, unauthenticated plus one user role, OWASP Top 10 coverage, full report, free retest | 3–5 working days | from €2,500 |
| Standard | Business app with multiple roles, an API and third-party integrations, business-logic testing, exec and technical report | 5–8 working days | €3,500–€8,000 |
| Advanced | Complex or high-risk app: deep authentication and SSO, payment flows, multi-tenant isolation, attack-chaining | 8–12 working days | €8,000–€20,000 |
| Compliance add-on | Mapping and an attestation letter for PCI DSS, ISO 27001, SOC 2, GDPR or DORA | with any tier | from €800 |
| Custom / large estate | Multiple applications or a full environment, scoped to your needs | on scoping | custom |
Every engagement is fixed-price, quoted after a free 20-minute scoping call, with no hourly surprises and a retest included. Get a fixed quote
FAQ
How much does website penetration testing cost?
How long does a test take?
What is the difference between this and a vulnerability scan?
Will the test disrupt our live site?
Do you test both REST and GraphQL APIs?
Does this satisfy PCI DSS or ISO 27001?
Is a retest included?
Are your testers actually certified?
Related services
Businesses across Europe launching or running a web application that holds customer data, takes payments, or must satisfy PCI DSS, ISO 27001 or SOC 2, and who want a real manual test with proof and fixes rather than a scanner report with a cover page.
Security you can prove
The same standard on every engagement, big or small.
Evidence, not opinions
Every finding ships with a reproduction and proof of concept — no vague "maybe vulnerable".
Humans over scanners
Certified engineers find the logic flaws and chained attacks automated tools walk straight past.
Fixed price, free retest
You know the cost up front, and verifying the fix is part of the deal — not a second invoice.
Ready to lock this down?
Free scoping call, fixed price, free retest. Tell us what you're running and we'll take it from there — usually within one business day.
Tell us what you're running
Scoping is free. We reply within one business day, and under 30 minutes for active incidents.