Aon

Aon

Speciality: Intelligence-Led Penetration Testing

London, United Kingdom 88586 employees
[01] About

Aon is a private financial services company based in London, UK, with 39,740 employees and $17.0B annual revenue; it offers consulting, risk management, insurance, actuarial, brokerage, and cybersecurity testing services, including CREST-certified penetration testing and red team assessments, demonstrating its comprehensive cyber resilience capabilities.

We exist to shape decisions for the better — to protect and enrich the lives of people around the world. Through actionable analytic insight, globally integrated Risk Capital and Human Capital expertise, and locally relevant solutions, our colleagues provide clients in over 120 countries with the clarity and confidence to make better risk and people decisions that help protect and grow their businesses.
[02] Services
Risk Capital Advisory
Human Capital Consulting
Penetration Testing
Red Team Assessments
Vulnerability Assessment
Cyber Risk Management.
[03] Certifications
CREST

CREST Cybersecurity Certification


Origin


CREST (Council of Registered Ethical Security Testers) was established in 2006 in the United Kingdom by a group of cybersecurity professionals and industry representatives. It was created to address the growing need for standardized, recognized qualifications in penetration testing and cybersecurity services. The organization emerged from concerns about the quality and professionalism of security testing services, aiming to provide a framework that would certify both individual practitioners and the companies that employ them.


Industry Value


CREST certifications are highly valued in the cybersecurity industry because they demonstrate a practitioner's technical competence and adherence to professional ethical standards. Many government agencies, financial institutions, and large corporations specifically require CREST-certified professionals when procuring penetration testing or security assessment services. The certification provides assurance to employers and clients that certified individuals have been independently verified to possess the necessary skills and knowledge, and that they follow established codes of conduct. This makes CREST credentials particularly important for cybersecurity professionals working in regulated industries or seeking to work with organizations that have stringent security requirements.

Offensive Security
CREST STAR
CBEST
CHECK

CHECK Certification


The CHECK (CHecklist Evaluating Computers and Key security) scheme was established by CESG (the UK government's National Technical Authority for Information Assurance, now part of the National Cyber Security Centre) in 1997. It was created to provide a structured framework for conducting information technology security assessments and penetration testing within UK government and critical national infrastructure environments. The scheme was designed to ensure that individuals performing security testing on sensitive systems possessed verified skills and adhered to established standards and methodologies.


The CHECK certification is highly valued because it represents government-endorsed validation of a security professional's ability to conduct rigorous, methodical security assessments. Organizations handling sensitive government data or operating within critical national infrastructure sectors often require CHECK-certified testers to ensure compliance with UK security standards. The certification's importance stems from its strict vetting process, which includes security clearance requirements and demonstration of technical competency, making CHECK holders trusted to access and test sensitive systems where standard commercial certifications may not suffice.

[05] Notable Clients
  • Kraft Heinz
  • American Oncology Network
  • Compass Group
  • Zuyderland