Cybersecurity for Law Firms in the UK

The SRA's 2019 Warning Notice on cybersecurity expects firms to implement staff training, technical controls, and incident response procedures proportionate to their risk profile. This includes MFA on email and case management systems, email filtering to detect phishing and impersonation, tested backup procedures, and a documented response plan that includes SRA notification where client money or data is affected.

Cyber Essentials is not legally mandatory for law firms, but the SRA strongly recommends it as a baseline. Larger enterprise clients and local authority legal panels increasingly require CE or CE+ as a procurement condition. Achieving Cyber Essentials Plus provides independently verified evidence of security controls that supports both SRA compliance and competitive differentiation.

Law firms are targeted through highly personalised phishing emails impersonating clients, courts, or professional bodies. Attackers research firm websites and LinkedIn profiles to craft convincing messages referencing specific cases or colleagues. Legal sector phishing frequently aims to steal credentials for case management systems, intercept client communications, or redirect conveyancing funds. Regular phishing simulations train staff to recognise these targeted attacks.

Conveyancing fraud through email interception (also called Friday afternoon fraud) is the most financially damaging threat for conveyancing practices. Attackers monitor email threads and at the point of exchange send fraudulent bank details, redirecting completion funds to criminal accounts. Losses per incident can run to hundreds of thousands of pounds. DMARC configuration, email encryption, and telephone verification procedures for bank detail changes are essential controls.

UK GDPR compliance for law firms requires a data processing register documenting what personal data you hold and why, a privacy notice, documented lawful bases for processing, data retention and deletion policies, and appropriate technical controls including encryption and access management. Law firms holding special category data — such as health information in personal injury matters — face stricter obligations. AMVIA provides technical controls and documentation support as part of its managed cybersecurity service.