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Web Security Audit for Swiss SMEs

73% of websites have at least one critical vulnerability. Our ISO 27001 and NIST CSF compliant audits identify and fix security flaws in your site before they are exploited.

Is your website truly secure?

73% of web applications have at least one critical vulnerability (Acunetix Web Application Vulnerability Report). SQL injections, XSS flaws, misconfigured access controls: these vulnerabilities are exploited daily by automated attackers scanning thousands of sites per hour.

43% of cyberattacks target web applications (Verizon DBIR). For a Swiss SME, a breach can lead to a customer data leak, non-compliance with the nFADP (fines up to CHF 250,000) and an irreversible loss of trust. A web security audit identifies these flaws before the attackers do.

Secure Your Website

Web Security: Protect Your Online Presence

Our web security audits follow the technological controls of ISO 27001:2022 (Annex A) and the NIST CSF. Each audit produces a detailed report with an action plan prioritised by criticality. At Bexxo, we detect an average of 12 to 15 critical vulnerabilities per audited SME.

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Vulnerability Analysis and Correction

  • Full scan of your site
  • Correction of identified flaws
  • Detailed report of actions
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Protection Against Common Cyberattacks

Verification of protections against SQL injection, XSS, CSRF and brute force. 43% of cyberattacks target web applications (Verizon DBIR).

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Communication Security

Verification of SSL/TLS, HTTPS, security headers (HSTS, CSP, X-Frame-Options). Protection against ClickJacking and data interception.

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Access Reinforcement

Audit of forms, administration areas and authentication policies (MFA). 80% of breaches involve compromised credentials (Verizon DBIR).

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Monitoring and Maintenance

Continuous monitoring via CVE Find, security updates, tested backups. An audit is not a one-shot exercise — security must be maintained.

Test Types

Types of Security Tests

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White Box

White box tests involve a thorough assessment of the internal architecture and source codes. These tests allow us to understand the internal workings of the system and identify potential vulnerabilities.

  • Le plus complet
  • Le plus cher
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Grey Box

Grey box tests combine elements of white box and black box tests. In this approach, we have partial knowledge of the system's internal architecture, or even the source codes. These tests are effective for identifying vulnerabilities related to design flaws.

  • Le standard
  • Complet et réaliste
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Black Box

Black box tests, or external security tests, evaluate the system without any prior knowledge. We therefore produce external attacks to identify vulnerabilities exploitable from the outside. This method is particularly useful for assessing the application's security from the perspective of a potential attacker.

  • Le moins complet
  • Point de vue du pirate

Comparison of testing methodologies

CriterionWhite BoxGrey BoxBlack Box
KnowledgeSource code + architecturePartial access (user)None (external attacker)
PerspectiveInternal developerUser with accountHacker
DepthMaximum (code + infra)BalancedAttack surface
Average duration5 to 10 days3 to 7 days2 to 5 days
Relative costHigherStandardMore affordable
Ideal forIn-depth pre-production auditStandard SME auditExternal resistance test
Bexxo recommendationPremium PackageStandard PackageEssential Package

Why conduct a security audit for your site?

A website is often a company's first gateway into the digital world. Without adequate protection, it becomes a prime target for cyberattacks. A cybersecurity audit helps identify vulnerabilities before they are exploited.

  1. Identify vulnerabilities before attackers do — 73% of websites have at least one critical vulnerability.
  2. Comply with nLPD — fines of up to CHF 250,000 in the event of a personal data breach.
  3. Protect customer data — average cost of a breach: USD 4.88M (IBM Cost of a Data Breach 2024).
  4. Safeguard your reputation — 87% of customers refuse to do business with a compromised company (McKinsey).
  5. Obtain a prioritised action plan — know exactly what to fix first, by criticality.
  6. Demonstrate your due diligence — the audit report serves as evidence in the event of a FDPIC inspection.

Anticipate risks with Bexxo: our audits follow ISO 27001 and NIST CSF standards for complete, documented protection of your online presence.

Web Security Audit

Protect your web presence

Your website is your company's showcase, but it also represents a potential target for cyberattacks. At bexxo, we offer an in-depth web security audit specially designed for SMEs. Our experts examine your online presence, identify vulnerabilities, and provide you with practical recommendations. Whether you use a popular CMS or a custom solution, our audit helps you strengthen your defenses and protect your customers' data. With bexxo, transform your website into a true digital fortress.

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Bexxo?

Why choose Bexxo?

I

Certified Expertise

CyberSafe Label certified and authorized to handle confidential data for federal institutions, our experts apply the highest security standards in the industry.

II

Personalized Support

We adapt our services to your specific needs, whether you are an SME or a large company.

III

Proactive Protection

We anticipate threats before they become a problem, thereby reducing risks and the impact of attacks.

Don't let your business be vulnerable to cyber threats. With Bexxo, secure your digital future today!

Frequently asked questions about web security audits

What is a web security audit?

A web security audit is a methodical assessment of a website designed to identify exploitable vulnerabilities (SQL injections, XSS, CSRF, misconfigurations) and verify compliance with ISO 27001 and NIST CSF standards. At Bexxo, our audits cover 10 to 20 control points depending on the chosen package.

How much does a web security audit cost?

Our packages range from CHF 1,500 (Essential — 10 control points, automated scan, simplified report) to CHF 15,000 (Premium — 20 control points, in-depth penetration tests, API assessment, management presentation). The Standard package (CHF 3,000) is the most requested by Swiss SMEs.

How long does a web audit take?

From 2 to 10 business days depending on the package and the complexity of the site. The Essential package takes 2 to 3 days, the Standard 3 to 7 days, the Premium 5 to 10 days. You receive a detailed report with a prioritised action plan at the end of the audit.

What is the difference between White Box, Grey Box and Black Box?

White Box analyses the source code and internal architecture (most comprehensive). Grey Box simulates a user with partial access (most balanced for SMEs). Black Box tests from the outside with no prior knowledge, like an attacker (most realistic). Bexxo recommends Grey Box as the standard for SMEs.

Does my WordPress site need a security audit?

Yes. WordPress powers 43% of websites worldwide and is by far the most targeted CMS by attackers. Vulnerabilities often come from third-party plugins, outdated themes and misconfigurations. A Bexxo audit checks all of these points, not just the WordPress core.

Is the audit compliant with ISO 27001 and nFADP standards?

Yes. Our audits follow the controls of ISO 27001:2022 (Annex A — technological controls) and the NIST CSF as reference frameworks. The audit report can serve as proof of due diligence in the event of an FDPIC inspection under the nFADP.
A web security audit is a methodical assessment of a website designed to identify exploitable vulnerabilities (SQL injections, XSS, CSRF, misconfigurations) and verify compliance with ISO 27001 and NIST CSF standards. At Bexxo, our audits cover 10 to 20 control points depending on the chosen package.
Our packages range from CHF 1,500 (Essential — 10 control points, automated scan, simplified report) to CHF 15,000 (Premium — 20 control points, in-depth penetration tests, API assessment, management presentation). The Standard package (CHF 3,000) is the most requested by Swiss SMEs.
From 2 to 10 business days depending on the package and the complexity of the site. The Essential package takes 2 to 3 days, the Standard 3 to 7 days, the Premium 5 to 10 days. You receive a detailed report with a prioritised action plan at the end of the audit.
White Box analyses the source code and internal architecture (most comprehensive). Grey Box simulates a user with partial access (most balanced for SMEs). Black Box tests from the outside with no prior knowledge, like an attacker (most realistic). Bexxo recommends Grey Box as the standard for SMEs.
Yes. WordPress powers 43% of websites worldwide and is by far the most targeted CMS by attackers. Vulnerabilities often come from third-party plugins, outdated themes and misconfigurations. A Bexxo audit checks all of these points, not just the WordPress core.
Yes. Our audits follow the controls of ISO 27001:2022 (Annex A — technological controls) and the NIST CSF as reference frameworks. The audit report can serve as proof of due diligence in the event of an FDPIC inspection under the nFADP.

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