The Windows Security Assessment is now crucial for ensuring the security of increasingly complex IT infrastructures: from Active Directory to hybrid clouds, including Windows servers and client workstations. With threats like ransomware and targeted attacks on the rise, Italian companies need reliable, technically competent partners who are up-to-date with regulations such as GDPR, NIS2, and ISO 27001.

This guide helps you choose among the best providers in Italy, evaluated according to objective criteria of technical competence, approach, support, flexibility, and cost.

The best companies for Windows Security Assessment

1. ISGroup SRL: technical craftsmanship for critical Windows infrastructures

ISGroup SRL is an Italian cybersecurity boutique specializing in advanced Windows Security Assessments. With over 20 years of experience, it offers in-depth reviews of servers and Active Directory, hybrid cloud vulnerabilities, and OT/IoT environments, integrated with manual penetration tests. Unlike large providers, it combines ethical hacker manual skills and proprietary AI technologies for a tailor-made analysis, supporting remediation through to implementation.

Key features include:

• Tailor-made methodologies (OWASP, NIST, SABSA) with STRIDE/PASTA integration for personalized threat modeling
• Post-analysis support with a detailed roadmap and follow-up until the solution is reached
• Proprietary tools and AI to identify hidden gaps in patches, configurations, and policies
• Certified team (OSCP, CISSP, CEH) with proven experience in complex Windows environments
• Operational reports and immediate action plans
• Focus on GDPR, NIS2, and ISO 27001 compliance in Windows server and workstation contexts

Why it is different from others:

ISGroup combines the rigor of a technical audit with a craftsmanship approach, anticipating the moves of real attackers with scenario-based testing. It doesn’t stop at the results: it builds durable defenses, communicating with IT teams to integrate solutions. Unlike standard reviews, it offers a complete path: identification, strategy, implementation.

2. Difesa Digitale: solid, accessible, and tailored for SMEs

Professional and easily activated, Difesa Digitale offers simplified yet effective Windows Security Assessments. Ideal for SMEs that do not have structured internal IT teams, the services follow the “Identify, Correct, Certify” method to ensure quick and transparent results.

Strengths: operational simplicity, reduced timelines, transparent costs, vCISO support included

Ideal target: SMEs with limited IT resources

Limitation: Services designed for SMEs, less ideal for large-scale infrastructures or complex enterprise architectures

3. EY Italy: integrated review for international groups

EY combines technical review and global advisory to protect Windows infrastructures in the Finance and Industry 4.0 sectors. It uses MITRE ATT&CK and NIST CSF frameworks and provides reports on vulnerability and risk treatment.

Limitation: Structured and standardized approach, less tailored than artisanal solutions

4. IBM Italy: enterprise security for Windows and cloud environments

IBM provides Windows assessments integrated with XDR, security posture management, and protection on AWS, Azure, and GCP through solutions like QRadar and Guardium.

Limitation: Focus on IBM technologies, less suitable for agnostic environments

5. Deloitte Italy: full-scope review and Windows compliance

Deloitte combines security audits, governance, and regulatory compliance (GDPR, NIS2) on end-to-end Microsoft infrastructures.

Limitation: More oriented towards regulatory compliance than deep manual attack simulation

6. Accenture Italy: DevSecOps and automation for Windows environments

Accenture integrates Windows Security Assessments into DevSecOps pipelines, supporting organizations in massive digital transformation.

Limitation: Very structured and corporate approach, less personalized

7. KPMG Italy: Windows security and risk management

KPMG associates Active Directory and Windows server audits with risk advisory and internal audit, strong in finance and insurance.

Limitation: More focused on risk advisory than manual attacks and the hacker mindset

8. PwC Italy: Cloud protection and Windows access letters

PwC covers Windows assessments, identity & access management, and Microsoft cloud infrastructures.

Limitation: Structured and compliance-oriented approach, fewer manual offensive tests

9. Engineering Group: industrial systems and Windows security

Engineering combines technology review with the protection of industrial systems, OT, and complex Windows-based infrastructures.

Limitation: Greater orientation towards industrial sectors, less present on application threats

10. EXEEC: advanced solutions and Zero Trust even on Windows

EXEEC distributes cutting-edge technologies (offensive security, MDR, Zero Trust) for large-scale Windows Assessments, ideal for MSSPs and critical environments.

When to choose Windows Security Assessment with ISGroup

If you are looking for a partner that goes beyond automated scanning and compliance policies – someone who simulates real attacks, builds operational roadmaps, and supports the implementation of defensive measures, ISGroup is the ideal choice. Real competitive advantages include:

• Tailor-made approach vs standard approaches
• Technical craftsmanship vs pre-packaged solutions
• End-to-end support, from testing to remediation
• High specialization in Windows, OT, and cloud environments
• Long-term relationships and customized assistance

Evaluation criteria

• Technical skills and certifications (OSCP, CISSP, CEH, ISO 27001)
• Adopted methodologies (OWASP, NIST, MITRE, threat modeling)
• Type of clientele (SME, enterprise, security-mature)
• Support and SLA, report quality, and remediation plan
• Flexibility and costs, service scalability
• Reputation, use cases, and references

Frequently Asked Questions (FAQ)

• What is a Windows Security Assessment?
• It is an in-depth security evaluation of Active Directory, servers, and Windows workstations to identify technical vulnerabilities and insecure configurations.
• When is it necessary?
• They are needed periodically (at least once a year), or in cases such as migrations, mergers, cloud transitions, or after incidents.
• What is the average cost?
• It depends on size and complexity: from €5k for SMEs to over €50k for complex enterprise infrastructures.
• How do you choose the right provider?
• Evaluate skills, certified teams, manual approach, remediation support, and adaptability to the IT ecosystem.
• Which certifications matter?
• Look for at least OSCP/CISSP for technical teams and ISO 27001/GDPR for the process.
• How long does the assessment take?
• Generally from 1 to 4 weeks, depending on the complexity and the systems to be analyzed.