Security Audit

Security Audit Definition

Security audit is a systematic, independent, and documented process for evaluating the effectiveness and compliance of policies, procedures, systems, and protection mechanisms in an organization. The goal of a security audit is to identify weaknesses, threats, and risks related to information security, as well as recommending corrective actions to improve the level of data and system protection.

The term “security audit” is used broadly — people also speak of security audits of buildings, machinery or events. This entry is about the security of information and IT systems; in companies the same scope is often called a cybersecurity audit. The need for regular assessment of safeguards follows directly from regulation: Article 32(1)(d) of the GDPR requires that the effectiveness of technical and organisational safeguards be checked and evaluated on a recurring basis; the NIS2 Directive in Article 21(2)(f) expects policies and procedures for examining whether risk-management measures actually work, and in Article 32(2)(b) it gives supervisors the right to put essential entities through recurring, targeted audits performed either by an independent organisation or by the authority itself. If you are looking for a provider of a cybersecurity audit for your company, the scope and course of the engagement are described on our security audits service page.

Goals of Conducting a Security Audit

A security audit aims to:

• Identify Gaps and Weaknesses: Detecting potential weaknesses in security systems and procedures.

• Compliance Assessment: Checking whether the organization meets legal, regulatory, and industry security standards.

• Risk Management: Assessing risks related to cyber threats and developing strategies to minimize them.

• Process Improvement: Recommending corrective actions and improvements in existing security processes.

• Building Awareness: Increasing employee awareness about threats and best practices in information security.

Types of Security Audits

• Internal Audit: Conducted by the organization’s internal audit team. Focuses on assessing compliance with internal policies and procedures.

• External Audit: Conducted by an independent auditing firm. Provides an objective assessment of compliance with regulations and industry standards.

• Technical Audit: Focuses on assessing technical aspects of security, such as system configuration, network and application security.

• Process Audit: Focuses on assessing the effectiveness and compliance of information security management procedures.

• Compliance Audit: Checks whether the organization meets requirements specified in legal regulations such as GDPR, HIPAA, PCI DSS.

Key Elements of a Security Audit

• Audit Scope: Defining areas to be audited, such as IT systems, business processes, security policies.

• Audit Methodology: Selecting appropriate methods and tools for conducting the audit, such as interviews, documentation review, penetration testing.

• Audit Team: Composition of the audit team, including internal and external experts.

• Risk Analysis: Identification and assessment of risks related to information security.

• Reporting: Preparing a report with audit results, including conclusions and recommendations.

Security Audit Process

• Planning: Defining the purpose, scope, and schedule of the audit.

• Data Collection: Gathering information about security systems, processes, and policies.

• Analysis and Assessment: Conducting analysis of collected data and assessing compliance with requirements and identifying weaknesses.

• Reporting: Preparing a report with audit results, including conclusions and recommendations.

• Corrective Actions: Implementing audit recommendations and monitoring their effectiveness.

• Monitoring: Continuous monitoring of systems and processes to ensure compliance and security.

Tools Used in Security Audits

• Risk Analysis Software: Tools for risk assessment and threat identification.

• Incident Management Systems: Tools for recording and managing security incidents.

• Security Scanners: Tools for detecting vulnerabilities in systems and applications.

• Network Monitoring Systems: Tools for monitoring network traffic and detecting anomalies.

• Compliance Management Software: Tools for tracking and reporting compliance with regulations.

Benefits of Regular Security Audits

• Improved Security: Identification and elimination of weaknesses in systems and processes.

• Regulatory Compliance: Meeting legal and industry security standards requirements.

• Risk Reduction: Minimizing risks associated with cyber threats.

• Increased Trust: Building trust among customers, partners, and stakeholders.

• Process Optimization: Improving information security management processes.

Challenges Related to Security Audits

• IT System Complexity: Difficulty in assessing complicated and complex IT systems.

• Evolving Threats: Cyber threat evolution requires continuous adaptation of audit methods.

• Costs: High costs of conducting audits, especially external ones.

• Human Resources: Lack of qualified specialists to conduct audits.

• Data Management: Difficulty in collecting and analyzing large amounts of data.

Best Practices for Conducting Security Audits

• Regularity: Conducting audits at regular intervals.

• Comprehensiveness: Including all aspects of security, both technical and procedural.

• Collaboration: Involving various organizational departments in the audit process.

• Documentation: Accurately documenting audit results and corrective actions.

• Education: Training employees on security best practices.

Role of Security Audit in Overall Cybersecurity Strategy

Security audit is a key element of an organization’s cybersecurity strategy. It helps identify weaknesses, assess risks, and ensure regulatory compliance. Regular security audits enable continuous improvement of processes and protection mechanisms, which increases the organization’s resilience to cyber threats. Security audit also supports building a security culture in the organization, increasing employee awareness about threats and best practices in information protection.

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• Security audits

TL;DR — Security audit in 2026

A security audit is a systematic, independent evaluation of an organisation’s information security posture — comparing existing controls, procedures and technology against a defined standard (ISO/IEC 27001:2022, NIST Cybersecurity Framework 2.0, CIS Critical Security Controls v8.1) or regulation (NIS2, DORA, GDPR, PCI DSS 4.0, HIPAA). The output is a documented gap analysis with prioritised remediation actions, audit findings classified by severity (Major Non-Conformity, Minor Non-Conformity, Observation, Opportunity for Improvement) and — where applicable — a certificate decision by an accredited body.

• Six audit types in 2026: compliance audit, technical / vulnerability audit, IT infrastructure audit, third-party (vendor risk) audit, forensic post-incident audit, post-implementation audit.
• Three delivery models: internal (in-house audit function), external (independent MSSP or virtual CISO), certification (TÜV NORD, DEKRA, DNV, BSI, Bureau Veritas, LRQA, DQS and other accredited certification bodies).
• 2026 regulatory mandates: NIS2 Article 32 supervisory audits for essential and important entities, DORA Article 6 ICT risk management framework, ISO 27001 surveillance audits every 12 months, PCI DSS 4.0 annual validation, DORA Article 26 threat-led penetration tests every three years.

Six security audit types compared

Audit type	Goal	Scope	Performer	Duration	Typical cost (USD)
Compliance audit	Verify ISO 27001 / NIS2 / DORA / GDPR / PCI DSS conformance	Policies, procedures, control evidence	Accredited certification body or independent firm	5-15 days	$8K-$40K
Technical / vulnerability audit	Identify technical vulnerabilities	Network, systems, applications	MSSP or internal IT security team	5-10 days	$5K-$20K
IT infrastructure audit	Assess technical state and architecture	Servers, network, cloud, OT/ICS	MSSP or internal audit	7-20 days	$8K-$40K
Third-party / vendor risk audit	Evaluate vendors (SOC 2 review, ISO verification)	Vendor questionnaires, evidence, on-site sampling	GRC team, MSSP	3-7 days per vendor	$1K-$5K per vendor
Forensic post-incident audit	Investigate breach root cause and impact	Logs, disk images, network captures (DFIR)	DFIR specialists	14-90 days	$15K-$150K
Post-implementation audit	Verify effectiveness of newly deployed controls	New processes and technology	MSSP or internal audit	5-15 days	$6K-$25K

Formal definition and historical context

In formal terms, a security audit is a systematic, independent and documented process for obtaining audit evidence and evaluating it objectively to determine the extent to which audit criteria are fulfilled — the definition adapted from ISO 19011:2018 Guidelines for auditing management systems. The audit produces evidence-based conclusions about how well an organisation’s information security management system (ISMS), technical controls and supporting processes meet the chosen criteria (standards, regulations, contractual obligations or internal policies).

A common confusion: security audit is not the same as a penetration test. An audit is broader and methodological — it combines documentation review, interviews, control sampling, walkthroughs and (often) technical testing against a defined standard, producing a conformance verdict. A penetration test is exploit-driven and narrower — it answers the question “can an attacker actually break in given the current configuration?”. Mature programmes use both: the audit confirms that policies and controls exist and are operating as designed, while the penetration test confirms that those controls actually withstand real-world attack techniques. See /en/glossary/penetration-testing/ for the complementary discipline.

Historically, IT audit evolved from financial audit. The earliest formalisations include SAS 70 (1992, AICPA Statement on Auditing Standards for service organisations), succeeded by SSAE 16 (2011) and now SSAE 18 / SOC 2 (2017+). On the European side, BS 7799-2 (1999) became ISO/IEC 27001:2005, with major revisions in 2013 and 2022. The 2020s ushered in regulation-driven audit growth: NIS2 Directive (EU 2022/2555, in force 2024-2025), DORA Regulation (EU 2022/2554, applicable from 17 January 2025), CMMC 2.0 (US DoD contractors, phased rollout from 2025), PCI DSS 4.0 (effective 31 March 2025 for all requirements).

Audit goals — the six purposes

1. Compliance verification — confirming conformance with a chosen standard or regulation. Typical engagements: ISO 27001 surveillance audit, NIS2 supervisory audit by the national competent authority, PCI DSS Report on Compliance by a Qualified Security Assessor (QSA), SOC 2 Type II by a CPA firm.
2. Gap analysis — measuring the distance between the current state and a target standard before formal certification. Output: prioritised remediation roadmap with effort estimates.
3. Risk assessment input — providing evidence-based input to the enterprise risk register. The audit confirms whether identified risks are adequately treated by existing controls. See /en/glossary/risk-assessment/.
4. Pre-certification readiness — confirming the organisation is ready to undergo a Stage 1 + Stage 2 certification audit by an accredited body without major non-conformities.
5. Third-party assurance — providing customers, partners and regulators with independent confirmation that controls are in place. SOC 2 reports and ISO 27001 certificates are the dominant currency for B2B trust in 2026.
6. Continuous improvement — feeding the Plan-Do-Check-Act (PDCA) cycle of the ISMS. Audit findings drive corrective and preventive actions (CAPA), management review and the next planning cycle.

Audit types in detail

1. ISO 27001:2022 compliance audit

The flagship ISMS certification audit. Conducted in two stages: Stage 1 is a documentation review confirming that the ISMS scope, Statement of Applicability (SoA), risk assessment, risk treatment plan, policies and management review records are in place; Stage 2 is an implementation effectiveness audit covering all 93 Annex A controls, audit evidence sampling, interviews with control owners and a closing meeting with classified findings. Once certified, the organisation undergoes surveillance audits every 12 months (sampling roughly one third of controls per year) and a full recertification audit every three years. The accredited certification bodies in EMEA include TÜV NORD, TÜV SÜD, TÜV Rheinland, DEKRA, DNV, Bureau Veritas, LRQA, BSI Group and DQS. See /en/glossary/iso-27001/.

2. NIS2 compliance audit

The EU NIS2 Directive (Directive (EU) 2022/2555) requires Member States to ensure that essential entities (large operators in 11 sectors including energy, transport, banking, health, digital infrastructure, public administration) and important entities (medium-sized operators in additional sectors) undergo supervisory audits. Article 32 empowers national competent authorities — UK NCSC, Irish NCSC, French ANSSI, German BSI, Dutch NCSC, Polish CSIRT GOV / CSIRT NASK — to conduct on-site inspections, request evidence and impose fines up to EUR 10 million or 2% of global annual turnover for essential entities (EUR 7 million or 1.4% for important entities). The audit checks the cybersecurity risk management measures listed in Article 21 (risk analysis, incident handling, BCP/DR, supply chain security, vulnerability disclosure, cryptography, MFA, secure development, training), incident reporting under Article 23 (24-hour early warning, 72-hour incident notification, one-month final report), and management body accountability under Article 20. See /en/glossary/nis2/.

3. DORA audit (financial sector)

The Digital Operational Resilience Act (Regulation (EU) 2022/2554) applies to over 22,000 EU financial entities — banks, investment firms, insurers, payment institutions, crypto-asset service providers and critical ICT third-party service providers. Effective from 17 January 2025, it mandates: Article 6 ICT risk management framework approved by the management body; Article 24-27 comprehensive digital operational resilience testing programme including threat-led penetration testing (TLPT) every three years for financial entities identified by the competent authorities, aligned with the TIBER-EU framework; Articles 28-31 third-party risk management with a register of information of all ICT contractual arrangements; Article 32 testing programmes integrated into the risk framework. Oversight is exercised by the European Banking Authority (EBA), the European Securities and Markets Authority (ESMA), and the European Insurance and Occupational Pensions Authority (EIOPA) for critical ICT third-party providers. See /en/glossary/dora/.

4. PCI DSS 4.0 audit

The Payment Card Industry Data Security Standard v4.0 (effective 31 March 2024 for transition, all new requirements mandatory from 31 March 2025) applies to any organisation that stores, processes or transmits cardholder data. Validation depends on transaction volume: Level 1 merchants (more than 6 million transactions per year) and all service providers must produce an annual Report on Compliance (ROC) signed off by a Qualified Security Assessor (QSA); Levels 2-4 can complete a Self-Assessment Questionnaire (SAQ A, A-EP, B, B-IP, C, C-VT, D-Merchant or D-Service Provider depending on environment). The standard contains 12 high-level requirements and 78 detailed controls, plus the new 2024-2025 additions: targeted risk analyses, customised approach for compensating controls, multi-factor authentication for all access into the cardholder data environment, and regular phishing-resistant authentication for administrators.

5. GDPR audit

The General Data Protection Regulation (Regulation (EU) 2016/679) is not a security standard but contains explicit security obligations. Article 24 requires the controller to implement appropriate technical and organisational measures, Article 32 mandates security of processing including pseudonymisation, encryption, resilience and regular testing, Article 35 requires Data Protection Impact Assessments (DPIAs) for high-risk processing, Article 28 requires written data processing agreements (DPAs) with all processors, and Article 33 mandates personal data breach notification to the supervisory authority within 72 hours. Audits are typically conducted by external GDPR consultants or law firms, with inspections by national Data Protection Authorities — the Polish UODO, French CNIL, German BfDI / state DPAs, Irish DPC and the European Data Protection Board (EDPB) for cross-border issues. See /en/glossary/gdpr/.

6. CIS Controls v8.1 audit

The Center for Internet Security Critical Security Controls v8.1 condenses defence-in-depth into 18 controls and 153 safeguards mapped to three Implementation Groups: IG1 (56 safeguards, small enterprise baseline), IG2 (130 safeguards, mid-sized enterprises with regulated data), IG3 (153 safeguards, mature enterprises facing sophisticated threats). Audits can be self-assessments using the CIS Controls Self-Assessment Tool (CIS-CSAT) or external assessments. CIS is free and pragmatic, with mappings to NIST CSF 2.0, NIST SP 800-53 and ISO 27001 — a popular choice for MSSPs and mid-market firms looking for a prioritised implementation roadmap.

7. SOC 2 audit (Type I and Type II)

The AICPA Service Organisation Control 2 report is the dominant trust currency for B2B SaaS in North America and increasingly in EMEA. It is based on the Trust Services Criteria (TSC): Security (always in scope), plus optionally Availability, Confidentiality, Processing Integrity and Privacy. SOC 2 Type I is a point-in-time attestation of control design; SOC 2 Type II confirms operating effectiveness over an observation period of six to twelve months. Audits must be performed by a licensed Certified Public Accountant (CPA) firm under SSAE 18. Typical cost: $30K-$100K for SOC 2 Type II plus continuous evidence collection through GRC platforms such as Drata, Vanta, Secureframe, Hyperproof, Sprinto or AuditBoard.

8. IT infrastructure audit

A technical audit covering server hardening, network architecture, Active Directory / Entra ID configuration, cloud security posture (CSPM), OT/ICS / IoT environments and DevOps pipelines. Reviews capacity planning, redundancy, monitoring coverage, backup integrity, patch management cadence and configuration drift. Typically combined with vulnerability scanning (Tenable Nessus, Qualys, Rapid7), cloud security posture management (Wiz, Prisma Cloud, CrowdStrike Falcon Cloud Security, Microsoft Defender for Cloud) and Active Directory security assessment (PingCastle, BloodHound, Tenable.ad).

9. Third-party / vendor risk audit

In 2026, supply chain risk dominates board-level cyber discussions. Standard tooling includes the Standardized Information Gathering Questionnaire (SIG and SIG Lite) from Shared Assessments, the CSA Consensus Assessment Initiative Questionnaire (CAIQ) for cloud providers, and continuous monitoring scores from BitSight, SecurityScorecard, RiskRecon (Mastercard), Black Kit, UpGuard and Panorays. Enterprise GRC platforms — OneTrust, ProcessUnity, Prevalent, ServiceNow VRM, MetricStream — orchestrate the questionnaire lifecycle, evidence collection, residual risk scoring and contractual remediation timelines. DORA Articles 28-31 elevated vendor audit from best practice to legal obligation for EU financial entities.

10. Post-implementation audit

Conducted after a significant control change — for example a Zero Trust Network Access (ZTNA) rollout, an EDR migration, a SIEM platform replacement, a cloud migration or a Privileged Access Management (PAM) deployment. Verifies that the designed controls operate as expected, integrations are functional, alerting paths reach the right responders and operational runbooks have been updated. Often missed in fast-moving programmes, which then accumulate “implemented but never validated” controls.

11. Forensic post-incident audit

Triggered by a confirmed security incident, this audit combines a Digital Forensics and Incident Response (DFIR) investigation with a control failure analysis. Deliverables include the forensic timeline, indicators of compromise (IOCs), affected assets, exfiltrated data scope, root cause and a list of failed or missing controls. The findings drive lessons-learned actions, regulator notifications (NIS2 Article 23, GDPR Article 33, DORA Article 19), insurer communication and — increasingly — litigation evidence. See /en/glossary/post-incident-actions/ for the full lifecycle.

12. HIPAA audit

US healthcare organisations and their Business Associates are subject to the HIPAA Security Rule (45 CFR §164.302-318), with the Security Risk Analysis under §164.308(a)(1)(ii)(A) being the most-cited requirement. The HHS Office for Civil Rights (OCR) enforces compliance through complaint-driven investigations, breach-triggered investigations and periodic compliance audits. Fines reach $1.9 million per violation category per year for wilful neglect (2024 inflation-adjusted figures).

13. FedRAMP audit

US federal cloud authorisation programme. Cloud Service Providers (CSPs) must engage an accredited Third Party Assessment Organisation (3PAO) to perform a security assessment against the FedRAMP baseline (Low, Moderate or High, derived from NIST SP 800-53 Rev 5). Three authorisation paths: Agency Authorisation, Joint Authorisation Board (JAB) Provisional Authorisation (P-ATO) — being replaced by the FedRAMP modernisation under the FedRAMP Authorization Act 2022 — and the new agency-led process.

14. CMMC 2.0 audit

The Cybersecurity Maturity Model Certification 2.0 applies to all US Department of Defense contractors and subcontractors handling Federal Contract Information (FCI) or Controlled Unclassified Information (CUI). Three levels: Level 1 (Foundational, 17 practices from FAR 52.204-21, annual self-assessment), Level 2 (Advanced, 110 practices from NIST SP 800-171, triennial third-party assessment by a Certified Third-Party Assessor Organisation or C3PAO), Level 3 (Expert, 110 practices plus enhanced requirements from NIST SP 800-172, government-led assessment by DIBCAC — the Defense Industrial Base Cybersecurity Assessment Center). Phased rollout from 2025 through 2028.

Audit methodology — the five-phase process

Aligned with ISO 19011:2018, ISO/IEC 27007:2020 (ISMS auditing) and the IIA International Professional Practices Framework, a security audit follows five phases:

1. Audit planning — defining objectives, scope and criteria; selecting the audit team with verified independence and competence; producing a risk-based audit plan that allocates effort proportionally to risk; agreeing the audit programme with the auditee management.
2. Preparation — pre-audit document review (ISMS policies, SoA, risk register, asset inventory, previous audit findings, incident logs); building the audit checklist; arranging interview slots; conducting the opening meeting to confirm scope, schedule and ground rules.
3. Execution — interviews with the CISO, IT security lead, system and application owners, HR, legal, DPO, Compliance Officer, vendor managers and (where relevant) the management body; documentation sampling with evidence collection; walkthroughs of key processes (joiner-mover-leaver, change management, incident response, backup restore, vulnerability management); targeted technical testing (configuration review, log review, vulnerability scan correlation).
4. Reporting — classifying findings as Major Non-Conformity (a systemic failure of a required control or process), Minor Non-Conformity (an isolated lapse), Observation (a current practice that does not yet breach the criteria but represents elevated risk) or Opportunity for Improvement (OFI); issuing Corrective Action Requests (CARs) for each non-conformity; producing the audit report with executive summary, detailed findings, evidence references and the certificate decision (for certification audits).
5. Follow-up — auditee submits a corrective action plan with root cause analysis, planned actions, owners and deadlines; the auditor verifies closure through evidence review or a follow-up visit; the cycle feeds the ISMS management review and the next audit plan.

Key standards and frameworks used in security audits

• ISO 19011:2018 — Guidelines for auditing management systems (universal audit methodology).
• ISO/IEC 27007:2020 — Information security management systems auditing.
• ISO/IEC 27008:2019 — Guidelines for the assessment of information security controls.
• ISO/IEC 27001:2022 with Annex A (93 controls across four themes: Organizational, People, Physical, Technological).
• ISO/IEC 27002:2022 — Code of practice with implementation guidance per control.
• NIST SP 800-53A Rev 5 — Assessing Security and Privacy Controls in Information Systems and Organizations.
• NIST SP 800-30 Rev 1 — Guide for Conducting Risk Assessments.
• NIST Cybersecurity Framework 2.0 — Six functions (Govern, Identify, Protect, Detect, Respond, Recover) used as a maturity benchmark.
• CIS Critical Security Controls v8.1 with the CIS-CSAT self-assessment tool.
• COBIT 2019 — ISACA framework for governance and management of enterprise IT, popular for IT general controls audit (ITGC).
• AICPA SOC 2 Trust Services Criteria (2017, revised 2022) plus SSAE 18 attestation standard.
• PCI DSS 4.0 with the PCI DSS Assessor Manual and Prioritised Approach Tool.
• ITAF 4th Edition (ITAF 4) — ISACA IT Audit Framework, the global standard for IT audit professionals.
• GTAG (Global Technology Audit Guides) — IIA technology audit guidance series.
• ISO/IEC 17021-1:2015 — Requirements for bodies providing audit and certification of management systems (auditor competence and impartiality).
• NIST AI Risk Management Framework (AI RMF 1.0) and ISO/IEC 42001:2023 — for emerging AI/ML system audits.

Audit vs adjacent activities

Activity	Goal	Method	Output
Security audit	Verify conformance with criteria	Documentation review, interviews, sampling, walkthroughs, targeted testing	Findings classified by severity, certificate decision
Penetration test	Prove exploitability	Black-box / grey-box / white-box exploit chains	Demonstrated attack paths, technical remediation list
Vulnerability assessment	List technical weaknesses	Automated scanning (Tenable, Qualys, Rapid7) + manual triage	CVE-tagged vulnerability list with CVSS scores
Risk assessment	Identify, analyse and evaluate risks	Asset inventory, threat modelling, likelihood × impact (ISO 31000, FAIR)	Risk register with treatment decisions
Red team exercise	Simulate a real adversary	TTP-driven (MITRE ATT&CK), multi-vector campaign	Detection / response gap analysis
Gap analysis	Measure distance to a target standard	Documentation comparison	Prioritised remediation roadmap
Maturity assessment	Score capability vs a maturity model	Interview-driven scoring (CMMI, NIST CSF tiers, C2M2)	Maturity scorecard with target state

See /en/glossary/penetration-testing/ and /en/glossary/security-controls/ for the complementary disciplines.

Auditor certifications recognised in 2026

• ISO/IEC 27001 Lead Auditor — IRCA, Exemplar Global, PECB, BSI accredited certification schemes.
• CISA (Certified Information Systems Auditor) — ISACA, the global gold standard for IT audit professionals.
• CRISC (Certified in Risk and Information Systems Control) — ISACA, risk-focused.
• CISM (Certified Information Security Manager) — ISACA, management-focused.
• CISSP (Certified Information Systems Security Professional) — (ISC)2, broad security professional credential often required for senior audit roles.
• PCI DSS QSA (Qualified Security Assessor) — PCI Security Standards Council, required to sign Reports on Compliance.
• CPA / SSAE 18 attestation experience — required for SOC 2 audit lead.
• CIA (Certified Internal Auditor) — IIA, broad internal audit credential.
• CMMC CCA (Certified CMMC Assessor) and CCP (Certified CMMC Professional) — Cyber AB, required for CMMC Level 2 third-party assessments.
• GIAC GSNA (GIAC Systems and Network Auditor) — SANS, hands-on technical audit.

2026 trends in security audits

• Continuous control monitoring (CCM) — GRC platforms such as Drata, Vanta, Secureframe, Hyperproof, Sprinto, Tugboat Logic and AuditBoard collect evidence 24/7 from cloud APIs (AWS, Azure, GCP), identity providers (Okta, Entra ID), endpoint agents and ticketing systems, replacing point-in-time evidence gathering. Auditors increasingly accept CCM evidence in SOC 2 and ISO 27001 audits.
• AI-augmented audit — Microsoft Security Copilot, ChatGPT Enterprise and purpose-built LLM tools (Audit Sight, MindBridge, Caseware AI) extract evidence from logs, configurations and policies; auditors validate AI-generated findings rather than building them manually. NIST AI RMF and ISO/IEC 42001:2023 now require their own AI management system audits.
• Cloud-native audit — Multi-cloud CSPM (Wiz, Prisma Cloud, CrowdStrike, Microsoft Defender for Cloud), CIEM (Sonrai, Ermetic now Tenable), KSPM (Kubernetes posture) and infrastructure-as-code scanning (Checkov, Snyk IaC, Bridgecrew) provide continuous control evidence in lieu of quarterly manual checks.
• Supply chain audit — Software Bill of Materials (SBOM) requirements (US Executive Order 14028, EU Cyber Resilience Act), SLSA (Supply-chain Levels for Software Artifacts) framework, signed-build attestations (Sigstore, in-toto), and dependency provenance verification through OpenSSF Scorecard.
• AI/ML system audit — NIST AI RMF 1.0, ISO/IEC 42001:2023 AI management system, and the upcoming EU AI Act (in force 2024-2026 phased) create a new audit discipline focused on model governance, training data provenance, bias testing and adversarial robustness.
• DORA-driven third-party audit growth — EU financial entities are renegotiating thousands of vendor contracts to add DORA Articles 28-31 audit rights, exit strategies and subcontracting registers. Critical ICT third-party providers face direct ESA oversight.

How nFlo conducts security audits

nFlo delivers compliance, technical and infrastructure audits across the full standards catalogue — ISO/IEC 27001:2022, NIS2, DORA, PCI DSS 4.0, GDPR, SOC 2, CIS Controls v8 — with 200+ active clients and 500+ delivered projects. We report risk reduction per audit — by the number of closed critical findings and the retest result, not as a single number for every engagement. Our auditors hold the ISO 27001 Lead Auditor, CISA, CRISC, CISSP and CISM credentials, and our DFIR team provides forensic post-incident audits with response times set in our managed-service contracts. Explore the dedicated services for security audits, ISO 27001 implementation and audit, NIS2 compliance, DORA compliance and penetration testing.

Related terms

• ISO 27001 — the dominant ISMS certification standard audited under the same methodology.
• NIS2 — EU directive driving supervisory audits for essential and important entities.
• DORA — EU regulation mandating ICT audits and TLPT for financial entities.
• GDPR — EU regulation with Article 32 testing and audit obligations.
• Penetration testing — complementary exploit-driven technical discipline.
• Post-incident actions — the forensic and lessons-learned activities triggered by a confirmed breach.
• Security controls — the safeguards evaluated during every security audit.
• Risk assessment — the upstream activity feeding control selection and audit scope.