Tim Reed

Technical Director

Tim Reed

Tim is the Director and Co-Founder of Sentrium Security, responsible for developing innovative technical products and services, and leading the development of our advanced cyber capabilities. He oversees our penetration testing team, and supports our customers in understanding their security posture and manage risk effectively.

Before founding Sentrium, Tim worked in technical security consulting roles at Redscan and Portcullis (Cisco), and as an Intelligence Operator with HM Forces. These experiences shaped Tim’s ability to identify weaknesses across complex systems and communicate findings clearly. He is driven by pioneering high-quality security services and helping clients take practical steps to improve security.

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Areas of expertise

  • Web application penetration testing
  • Infrastructure and network assessments
  • Red teaming and adversary simulation
  • Threat modelling and risk assessments
  • Cloud security assessments

Writing focus

Tim writes about penetration testing approaches, emerging attack techniques, and practical methods for improving organisational security posture through evidence-based assessment.

Tim's work

  1. VMWare vCenter critical RCE exploited

    September 29, 2021

    VMware vCenter Critical RCE Vulnerability

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  2. Release of the OWASP Top 10 2021

    September 24, 2021

    OWASP Top 10 2021 Released

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  3. Introduction to Windows 11 (Beta) security features

    September 15, 2021

    Introduction to Windows 11 (beta) security

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  4. HTTP3 and QUIC protocols released - what does this mean for security?

    September 8, 2021

    HTTP/3 and QUIC: A new era of speed and security?

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  5. Open redirection vulnerability in Microsoft products may provide a new phishing attack vector

    September 1, 2021

    Microsoft reports open redirection phishing tactics

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  6. RCE in Fortinet WAF

    August 25, 2021

    Fortinet WAF allows remote code execution

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  7. Microsoft Exchange Proxy Vulnerabilities

    August 18, 2021

    Microsoft Exchange Proxy Vulnerabilities

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  8. Windows Petit Potam vulnerability in AD environments

    August 11, 2021

    PetitPotam: Windows AD CS NTLM Relay Attack

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  9. Why use a CREST penetration testing provider?

    July 12, 2021

    Why use a CREST-approved penetration testing provider?

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