ReactionIS Clients

We are an independent information security consultancy, specialising in network and web application penetration testing.

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Penetration Testing

Our clients include:

  • Global retail & investment banking institutions
  • Hedge funds & asset management organisations
  • Local and central government departments
  • Ministry of Defence
  • Legal & Insurance firms
  • Online retail, gaming and online travel & hotel booking websites

Our Clients

ReactionIS work across all industry sectors including global retail and investment banks and banking institutions, legal and insurance companies, hedge funds and asset management organisations, local government, central government departments and Internet Service Providers.

What our clients say

“Advansys been working with Reaction IS for a couple of years as preferred supplier for all our penetration testing needs. We’re very pleased with the quality of service and the level of expertise and professionalism they have consistently shown. We wouldn’t hesitate to recommend them.”
K. Wilson, Director at Advansys

Web application security and penetration testing for advansys

"I have worked with Joe (Technical Director at ReactionIS) on several occasions and have found him to be one of the highest calibre consultants in his field. Joe has a thorough understanding of IT Security and I would recommend him to anyone."
James Spencer, Network Administrator at Irish Bank Resolution Corporation (IBRC formerly Anglo Irish Bank Corporation)

IT security and penetration testing for Irish Bank Resolution Corporation

"Reaction conducted a thorough and extensive test and report of our multi branch CITRIX network. They are clearly experts in the field and focus on this critical area. The timetable and report were delivered to schedule and the test exposed essential changes required. I have no hesitation in highly recommending Reaction and will be using their services again for further work."
Duncan Macbain, Managing Director at Hydraquip

ReactionIS pentesters

"We arranged a meeting with Reaction to discuss securing our corporate network and websites and the Reaction team were extremely helpful and friendly. We decided on the best course of action and the test was scheduled in and we were informed every step of the way. The report we received was informative and gave clear solutions on how to fix the various issues that arose. We expecially liked the fact that the executive summary section in the report was in plain English. We would definitely engage Reaction again."
G. Obee, Managing Director at Motorline

Web application and network penetration testing for Motorline

ReactionIS work with clients UK-wide and world-wide, small and large. For a free, no-obligation initial consultation, please get in touch.