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Engaging with cybersecurity has become essential for every type of business whatever their size or sector. Increased digitalisation and new technologies are allowing businesses to grow rapidly. However, cyber risks increase in tandem with these opportunities and every modern business should expect to experience a data breach.  

CMS has advised on over 500 cyber incidents to date and covers over 50 jurisdictions as part of our global cyber network.  Our approach is to tackle cyber issues holistically and globally.

Cyber from every angle

  • Breach incident response

    We’re available 24/7/365 to coordinate an immediate response to a breach. We advise on how to minimise the risk of regulatory sanction or litigation from the outset.

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  • Regulatory notifications and investigations

    Having excellent relationships with regulators worldwide, we assist with the submission of notifications and strategy for anticipated fines and actions.

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  • Cyber class actions, follow-on damages and civil claims

    When bringing and defending claims, we can seamlessly handle overlapping claims across multiple jurisdictions.

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  • Reputation management

    Placing your reputation at the heart of the process can help protect your business against public relations consequences.

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  • Cyber and data protection compliance

    Before an incident, we prepare businesses through audits, eLearning, training and breach response plans. Post-incident, we provide ongoing health checks and reviews.

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CMS helps to prevent, resolve and manage a cyber attack

  • 24/7/365 Emergency Response Hotline
  • Access to CMS experts via Breach Assistant knowledge hub
  • Data subject notification
  • ICO and oher regulatory notifications
  • Strategy for potential sanctions and litigation
  • Reputational management issues
  • Liaising with crimincal authorities

  • Supporting internal investigations
  • Handling regulatory investigations
  • Managing resulting litigation and class actions
  • Reputational management issues
  • Review and update policies and procedures
  • Directors' liability
  • Facilitating lessons learned reviews

Discussing the issues

  • Advising the Board on Cyber Risk

  • The data security perils of working from home (video)

  • Cyber and professions - Law-Now series

Further reading

CMS Emergency Response Support Line

CMS Breach Assistant

Data Law Navigator

Advising the Board

Awards & Recognitions
01
  • Quote
    "They know their law, they know the market, they have the ability to provide solutions not just give advice."
    Legal 500, 2021
  • Quote
    "The team has built up masses of experience and is excellent at using that experience to develop new talent; much needed in this growth space."
    Legal 500, 2021
  • Quote
    "Having been one of the early firms to create a global incident response service, that service is now one of the best we use. It operates seamlessly to provide global advice in short time frames and without incurring massive costs."
    Legal 500, 2021

Explore more

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UK Cyber Security and Resilience Bill: implications for the UK electricity sector

12 May 2026 21 min read

Sexual misconduct in legal practice: regulatory developments, disciplinary trends, and the evolving approach of the SRA and SDT

07 May 2026 14 min read

Building on shaky foundations: a legal critique of the supply-chain regime in the proposed Cybersecurity Act 2

06 May 2026 16 min read

ASA upholds three rulings against online pharmacy for non‑compliant social media advertising of prescription‑only medicines

29 Apr 2026 8 min read

High Court upholds Metropolitan Police's live facial recognition policy: Thompson & Anor, R (On the Application Of) v Commissioner of Police of the Metropolis

28 Apr 2026 8 min read

CMS Expert Guide: Data Law Navigator

23 Apr 2026 2 min read

Smart Data 2035: The UK government publishes its Smart Data Strategy

21 Apr 2026 9 min read

Events

  • United Kingdom
    13 May 2026

    2026 ITechLaw World Technology Law Conference in Chicago

  • United Kingdom
    21 May 2026

    Navigating Global Uncertainty: Practical Insights for In-House Teams

  • United Kingdom
    28 May 2026

    CMS International Crypto Forum 2026

  • United Kingdom
    03 Jun 2026

    IP Insights webinar series 2026

  • United Kingdom
    08 Jun 2026

    Skills for Future Facing Teams: Presenting as a Leader

  • United Kingdom
    09 Jun 2026

    CMS Consumer & Retail Conference 2026

  • United Kingdom
    09 Jun 2026

    UPC Case Law webinar series 2026

  • United Kingdom
    11 Jun 2026

    Class actions in Scotland: Will Scotland become a litigation hotspot?

  • United Kingdom
    18 Jun 2026

    Cross-Border Financial Services 2026 webinar series

  • United Kingdom
    22 Jun 2026

    Skills for Future Facing Teams: The Leader Who Advocates Legal Value

  • United Kingdom
    30 Jun 2026

    On the Pulse webinar series 2026 - Spring/Summer

  • United Kingdom
    06 Jul 2026

    CMS Skills For Future Facing Teams: The empowering leader

Local market knowledge. Global outlook

We provide future-facing legal advice to help your organisation thrive. Combining local market knowledge and a global perspective, and with lawyers in locations worldwide, your organisation benefits from the expertise it needs, even across borders.

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