Crossword Cybersecurity Plc engages in the development and commercialization of cyber security related software and provision of consulting services in the United Kingdom and Poland. The company offers Rizikon Assurance, an online system that enhance third-party assurance and risk management; Nixer, a machine-learning based product for protection against application-layer DDoS attacks; Trillion, a mining platform that continuously tracks, correlates, and analyses billions of stolen usernames and passwords; and Identiproof that enhances the security and privacy of digital credentials. It also provides Arc, an account protection for B2C commerce platform owners; and Nightingale, a security monitoring service. In addition, the company offers cyber security consulting, including cybersecurity strategy, assessment, risk management, transformation, penetration testing, virtual CISCo, third party assurance, and credential attack services. The company was incorporated in 2014 and is based in London, the United Kingdom.