Law firms and legal services providers handle extremely sensitive client information including privileged communications, M&A deal data, litigation strategies, and intellectual property. The confidential nature of legal data makes law firms attractive targets for cybercriminals and nation-state actors seeking competitive intelligence. Major law firms have suffered significant data breaches in recent years, with attackers using stolen information for insider trading, extortion, and competitive advantage.
Penetration testing for law firms must address email security, document management systems, client portals, remote access infrastructure, and the security of data shared with courts, clients, and opposing counsel.
Law firms face increasing pressure from corporate clients to demonstrate robust cybersecurity, with many enterprises now including cybersecurity questionnaires and audit rights in their outside counsel agreements. Regular penetration testing helps law firms protect client confidentiality, meet ethical obligations, satisfy client security requirements, and comply with data protection regulations including GDPR and state privacy laws.
CREST and CHECK-accredited UK penetration testing and managed security provider formed in 2026 from Pentest People, Bulletproof, and Target Defense, with CREST STAR/TLPT-FS capability and the GuardNest vulnerability management platform.
CREST and CHECK-accredited UK penetration testing consultancy with CBEST approval, specialising in infrastructure, application, and simulated attack assessments across the public and private sectors.
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.
CREST-accredited UK cyber security and data protection consultancy offering penetration testing, ISO consultancy, and managed SOC services from offices across the UK and Ireland.
Global risk advisory firm with a 400+ person cyber practice. IR-led penetration testing that feeds active breach intelligence straight into test scoping.
London-based cybersecurity provider, now part of Kroll, delivering CREST-accredited penetration testing, managed detection and response, and incident response with a 550-strong cyber team.
Established Ely-based compliance and cybersecurity consultancy offering CREST-approved penetration testing as part of a comprehensive governance, risk management, and compliance portfolio.
Cybersecurity consulting division of global insurance leader Aon, uniquely combining penetration testing with cyber risk quantification and insurance expertise.
Law firms hold sensitive client data including M&A intelligence, litigation strategies, trade secrets, and personal information. This data has high value for insider trading, extortion, and competitive intelligence.
Large corporate clients increasingly require law firms to demonstrate cybersecurity maturity through questionnaires, certifications (ISO 27001, Cyber Essentials), and evidence of regular penetration testing.
Common findings include weak email security, insecure remote access, inadequate document management security, poor password policies, and lack of multi-factor authentication on critical systems.