Penetration Testing for Legal

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.

7 providers
Aon Cyber Solutions logo

Aon Cyber Solutions

Cybersecurity consulting division of global insurance leader Aon, uniquely combining penetration testing with cyber risk quantification and insurance expertise.

London, United KingdomContact for pricing
Web ApplicationNetworkCloudRed Teaming+4
ISO 27001SOC 2
Verified Feb 2026
Aristi logo

Aristi

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.

Birmingham, United KingdomContact for pricing
Web ApplicationNetworkMobile AppCloud+7
CRESTCHECKISO 27001Cyber Essentials+2
Verified Feb 2026
Cyberis logo

Cyberis

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.

Worcester, United KingdomContact for pricing
Web ApplicationNetworkMobile AppCloud+4
CRESTCHECKCBESTSTAR+4
Verified Feb 2026
Evalian logo

Evalian

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.

Winchester, United KingdomContact for pricing
Web ApplicationNetworkMobile AppAPI+5
CRESTISO 27001Cyber EssentialsCyber Essentials Plus+1
Verified Feb 2026
IT Governance logo

IT Governance

Established Ely-based compliance and cybersecurity consultancy offering CREST-approved penetration testing as part of a comprehensive governance, risk management, and compliance portfolio.

Ely, United KingdomContact for pricing
Web ApplicationNetworkVulnerability AssessmentConfiguration Review
CRESTISO 27001PCI QSACyber Essentials
Verified Feb 2026
Pentest People logo

Pentest People

CREST and CHECK-accredited UK penetration testing firm with an innovative SecurePortal platform and transparent pricing for mid-market organizations.

Leeds, United KingdomContact for pricing
Web ApplicationNetworkMobile AppAPI+6
CRESTCHECKCyber Essentials PlusISO 27001
Verified Feb 2026
Redscan (A Kroll Business) logo

Redscan (A Kroll Business)

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.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile AppCloud+5
CRESTISO 27001Cyber EssentialsCyber Essentials Plus
Verified Feb 2026

Legal Pen Testing FAQs

Why are law firms targeted by cyber attackers?+

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.

What do corporate clients expect from law firms?+

Large corporate clients increasingly require law firms to demonstrate cybersecurity maturity through questionnaires, certifications (ISO 27001, Cyber Essentials), and evidence of regular penetration testing.

What are common vulnerabilities in law firms?+

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.