CHECK and CREST-accredited Birmingham-based cyber security consultancy with over 15 years of experience delivering penetration testing, red teaming, and OT security assessments for government and private sector clients.
- Categories
- Penetration testing, OT and ICS security, Security consulting and vCISO, Managed security services
- Based in
- Birmingham, United Kingdom
- Founded
- 2008
- Size
- 11-50 staff
- Ownership
- Owned by Limerston Capital since 2025
- Certifications
- CHECK, CREST
About Aristi
Aristi is a UK cyber security provider based in Birmingham. It offers end-to-end services that help organisations identify real security risks, prioritise what matters and improve resilience across IT and OT environments. The company works with both public and private sector clients and has been established since 2008. It is part of the Xypher group, which also covers compliance, digital forensics and e-Discovery. Aristi provides security testing, managed security and information assurance. Its testing services include CHECK and CREST penetration testing, red team assessments, OT penetration testing, web application and API testing, mobile application testing, cloud security assessments, vulnerability assessments, physical security assessments, configuration reviews, phishing assessments and PSN/PSNP IT health checks. It also offers cyber security as a service, cyber tabletop exercises, testing as a service, GDPR/DPIA services, DPO as a service, vCISO as a service, ISO 27001 as a service, Cyber Essentials and Cyber Essentials Plus support, and SIRO/IAO training. The company serves sectors such as police, energy and CNI, legal, rail, fire, banking and finance, NHS, IT providers, manufacturing, housing and construction, private healthcare, and central and local government. Aristi holds CHECK and CREST accreditations and is on several procurement frameworks.
Ownership and deals
- Limerston Capital acquired AristiReport on Limerston Capital buying Aristi (opens in a new tab)
Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.