Security Audits
The vast majority of companies don't know where their biggest security gaps are. An independent audit identifies weak points before attackers exploit them. You receive a concrete action plan - prioritized by business risk and budget.
Describe your scope — your account manager will reply within 24 hours.
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What is an IT security audit?
An IT security audit is an independent assessment of an organization's security posture covering infrastructure, processes, policies, and compliance with standards (ISO 27001, NIS2, GDPR). nFlo delivers a report with a prioritized remediation roadmap — both an executive summary for the board and technical details for the IT team.
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Discuss Security Audits with your dedicated account manager.
You don't know where your biggest gaps are - the attacker already does
Comprehensive risk map and remediation plan
Technical Audit
Systems, networks, applications, configurations
Process Audit
Policies, procedures, access management
Compliance Audit
ISO 27001, NIS2, GDPR, PCI DSS
External Audit Found What Every Hacker Could See
A cooperative bank underwent a regulatory audit. Auditors found an Oracle admin panel without a password in 20 minutes - accessible from the internet. The same panel had been visible to hackers for 8 months. During that time, data of 15,000 customers was downloaded. Cost: €500K regulatory fine + reputation loss + customer lawsuits.
Without regular security audits:
- Critical vulnerabilities remain unnoticed for years
- You don’t know if you’re investing in real risks
- Fail during regulator audit
- No preparation for ISO 27001 or NIS2 certification
Independent Assessment + Concrete Action Plan
We don’t leave you with a thick report full of jargon. We understand you have a limited budget and team. That’s why we prioritize recommendations by business risk and feasibility - from quick wins to strategic projects.
What you get:
- Technical audit: system, network, application, Active Directory configurations
- Process audit: policies, procedures, access management, backup & DR
- Compliance audit: gap analysis against ISO 27001, NIS2, GDPR, PCI DSS
- Risk assessment according to ISO 27005 or NIST methodology
- Executive summary report for management (no technical jargon)
- Technical report with concrete remediation steps
- Implementation roadmap with priorities (quick wins → long-term projects)
- Optionally: support in implementing top 10 recommendations
Who Is It For?
This service is for you if:
- You’re preparing for ISO 27001 certification or NIS2 audit
- You need an independent assessment before an important audit (regulatory, client)
- The board wants to know “how secure are we really”
- You want to check the effectiveness of security investments
- You must meet compliance requirements (GDPR, PCI DSS, industry-specific)
When is a cybersecurity audit mandatory?
For some organizations, a cybersecurity audit is no longer a board decision but a legal duty. The 2026 amendment to the Polish Act on the National Cybersecurity System (KSC Act; Journal of Laws 2026, item 252), which transposes the NIS2 directive, requires an essential entity to carry out, at its own cost and at least once every 3 years, a security audit of the information system it uses to provide its service. The first such audit must take place within 24 months of the entity meeting the criteria for an essential entity, and an electronic copy of the report goes to the competent cybersecurity authority within 3 working days of receiving it.
An important entity has no statutory audit cycle, but the competent authority may order it, by decision, to undergo an external audit after a significant incident or another breach of the Act — and it may issue such an order to an essential entity at any time. Separately, the NIS2 directive (Article 21(2)(f)) requires essential and important entities to have policies and procedures for assessing whether their cybersecurity risk-management measures are effective. A periodic audit is evidence that such an assessment actually takes place.
Who can audit an essential entity?
The KSC Act bars from the auditor role anyone who performs cybersecurity tasks in the audited entity (Articles 8 and 9–13 of the Act) or performed them within the year before the audit starts. A security team therefore cannot audit itself — an essential entity either commissions the audit externally or assigns it to someone who does not perform those tasks.
What to prepare before a cybersecurity audit
- Scope — the list of systems and locations covered (for an essential entity: the systems used to provide its service)
- Documentation — security policies, risk analysis, incident handling procedures, results of previous audits and penetration tests
- People — IT, security and business contacts available for interviews
- Access — accounts and maintenance windows for technical tests, agreed before work starts
Types of Security Audits
ISO 27001 Compliance Audit
Assessment of ISO/IEC 27001 certification readiness:
- Gap analysis against standard requirements (Annex A - 93 controls)
- Information Security Management System (ISMS) assessment
- Documentation review (policies, procedures, registers)
- Verification of implemented control effectiveness
- Action plan to certification with timeline
Typical time: 5-10 days | Price from: €5,000
NIS2/KSC Compliance Audit (gap analysis)
Preparation for NIS2 directive requirements:
- Determination if you’re subject to NIS2 (essential/important entity)
- Gap analysis against 10 requirement areas
- Cybersecurity risk management assessment
- Incident reporting procedures review
- Supply chain security
- Compliance implementation plan with timeline
Typical time: 7-12 days | Price from: €6,000
How this audit differs from the NIS2 Readiness Check and from NIS2 implementation is shown in the comparison “Which NIS2 service should you choose?” below.
GDPR Compliance Audit
Personal data processing verification:
- Personal data inventory
- Legal basis assessment
- Processing agreements and consent review
- Technical and organizational measures assessment
- Breach and data subject rights procedures verification
- Remediation recommendations
Typical time: 5-8 days | Price from: €3,000
Technical Infrastructure Audit
Technical security review:
- Windows/Linux server configuration
- Active Directory and permissions security
- Network segmentation and firewall rules
- System hardening according to CIS Benchmarks
- Backup, disaster recovery, and high availability
- Security monitoring and logging
Typical time: 5-10 days | Price from: €3,500
Which NIS2 service should you choose?
At nFlo, NIS2 preparation is three consecutive steps. Each one is a separate service with its own price — you can start with any of them and stop there.
| NIS2 Readiness Check | NIS2/KSC audit (gap analysis) | NIS2 implementation (NIS2 and DORA Compliance) | |
|---|---|---|---|
| Question it answers | Does NIS2 apply to us and how much will implementation cost? | Which NIS2 and KSC Act requirements do we not meet? | How do we achieve compliance and prepare for a regulator audit? |
| Depth | Legal qualification, 1-day discovery session, maturity scoring (1-5) across 10 NIS2 areas | Entity classification and gap analysis of the 10 requirement areas based on evidence and interviews, including risk management, incident reporting and supply chain | Gap analysis, roadmap, policies and procedures, technical control implementation, training, regulator audit preparation |
| Deliverable | Report (20-30 pages), executive summary, roadmap, implementation cost estimate | Gap report with a compliance implementation plan and timeline | Implemented controls and compliance documentation |
| Who it is for | You don’t know whether NIS2 applies to you and the board wants a business case before the budget decision | You know you are an essential or important entity and need a formal gap report | You know your gaps or are starting from scratch and want to go all the way to compliance |
| Time | 2 weeks (Enterprise: 3-4 weeks) | 7-12 business days | 3-9 months |
| Price (net) | from €3,500 (Enterprise: individual quote after scoping) | from €6,000 (BASIC package: €6,000–€10,500) | €13,000–€50,500 including the gap analysis; with support during the authority’s audit from €64,000 |
The gap analysis within implementation is the same scope and price as the BASIC NIS2/KSC audit — the implementation price already includes it. On the KSC compliance page, Model 1 is the NIS2/KSC audit and Model 2 is NIS2 implementation from this table; compliance maintenance (Model 3) is quoted individually. Prices apply to NIS2 and the KSC Act (the Polish act implementing NIS2) — DORA is quoted separately.
Details: NIS2 Readiness Check · NIS2/KSC audit · NIS2 and DORA Compliance · KSC compliance
Related Glossary Terms
Learn more about key concepts related to this service:
How we work
Our proven service delivery process.
Planning
Scope, criteria, audit schedule
Evidence Collection
Interviews, documentation, technical tests
Analysis
Assessment against requirements and best practices
Reporting
Report with findings and prioritization
Follow-up
Support in implementing recommendations
Benefits for your business
What you gain by choosing this service.
Avoid Breaches
Find gaps before attackers exploit them
Regulatory Compliance
Meet NIS2, ISO 27001, GDPR requirements
Budget Optimization
Invest in the most important areas
Certification Readiness
Prepare for ISO 27001 or NIS2
Related Articles
Expand your knowledge with our resources.
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The audit confirmed the cloud environment was compliant in March, and in April someone opened a database port for a test and forgot to close it. We show how to turn an annual check into continuous configuration measurement that produces audit evidence on its own.
Read more →Third-party vendor access to critical systems: how do you control it under DORA?
The integrator of your core system, the firm that maintains your databases, the infrastructure service provider — each of them logs into systems your institution is accountable for, not theirs. We show how to turn DORA and Delegated Regulation 2024/1774 into concrete decisions about the account, the session and the evidence for audit.
Read more →IT security audit under NIS2: what will you prove compliance with?
A supervisory authority may demand evidence that your cybersecurity policy is actually being implemented — the directive says so explicitly. Preparation therefore starts with a register of evidence, not with a vulnerability scanner. We break that register down into ten areas and show which artefact closes each one.
Read more →Frequently Asked Questions
Common questions about Security Audits.
How much does an IT security audit cost?
Security audit pricing depends on the standard, scope and organization size. Entry-level (BASIC) packages start from €3,000 net for a GDPR audit, €3,500 for a technical infrastructure / Active Directory audit, €5,000 for ISO 27001 and €6,000 for NIS2/KSC. We offer a free initial consultation with a quote.
How long does a security audit take?
A typical security audit takes 5-15 business days, depending on the standard and scope (typical time for each audit type is listed below). It includes planning, evidence gathering and interviews, analysis, and report preparation. For large organizations, this may take longer.
What's the difference between an audit and a penetration test?
An audit is a comprehensive assessment of processes, policies, configurations, and compliance with standards (e.g., ISO 27001). A penetration test is an attack simulation focused on technical vulnerabilities. We recommend both - an audit provides a broad picture, a pentest provides deep technical analysis.
Do you help implement audit recommendations?
Yes. We offer support in implementing recommendations - from individual consultations to full implementation projects. We can also prepare your company for ISO 27001 certification or NIS2 compliance audit.
How often should we do security audits?
We recommend security audits every 12-18 months. ISO 27001 requires regular internal audits (at least annually) and certification audits every 3 years. NIS2 requires regular security assessments. After major infrastructure changes, an earlier audit is advisable.
Is a cybersecurity audit mandatory?
For essential entities under the Polish KSC Act — yes: since the 2026 amendment (NIS2 transposition), an essential entity carries out a security audit of its information system at its own cost at least once every 3 years, with the first audit within 24 months of meeting the criteria for an essential entity. The competent authority may order an important entity to undergo an external audit after a significant incident or another breach of the Act. For other companies a cybersecurity audit is voluntary, although standards they want to comply with may require it (ISO 27001 provides for internal audits).
Who can perform a cybersecurity audit of an essential entity?
Someone independent of the audited entity's cybersecurity tasks. The KSC Act bars from the auditor role anyone who performs cybersecurity tasks in that entity or performed them within the year before the audit starts — so an internal security team cannot audit its own work.