About Crossword Cybersecurity PLC

Crossword Cybersecurity is a technology commercialisation and cyber security consulting company. We have helped over 400 organisations protect their IT Infrastructure, comply to national and international legislation, achieve IT security certifications and protect their supply chain since 2014. We have offices in London (UK), Kraków (Poland) and Oman.

We build IT security and risk applications based on the latest cyber security threats and university research. We have developed software solutions for Supplier Assurance, Credential Stuffing, Identity Management and Security Operations Centre operations. We have also developed an Intrusion Detection Solution and Security Clearance solution through our partner companies CyberOwl and ByzGen.

Crossword is at the forefront of the ever changing risk landscape. This allows us to accurately assess and support our clients in improving their cyber security posture and implementing current best practices with the latest, best in breed solutions. 


Em. Prof. David Chadwick, co-author of the new W3C Verifiable Credentials standard and Product Director of Identiproof:

  • Emeritus Professor of Information Systems Security at the University of Kent
  • Over 20 years of experience in digital identity, verifiable credentials, cryptography,
    authorisation and access control
  • Co-Author of W3C Verifiable Credentials Data Model Recommendation
  • Co-editor of part of the X.500 series of standards
  • Co-editor of two Internet RFC standards (RFC 2120 and RFC 3876)
  • UK BSI expert to ISO standardisation meetings for X.500/X.509, mobile driving licenses, and age verification
  • Represented ITU-T to present X.500 to several Middle Eastern countries
  • Author of more than 200 publications (books, book chapters, journal and conference papers)
  • Massive enthusiast for giving individuals control over their digital identities.