The team at CMS is sought out by clients to help with incident response and management. The team has worked on numerous high-profile cyber incidents and continues to assist major cyber insurers. Erik Jonkman leads the privacy and cybersecurity practice lading on key cyber incidents and data breaches. Simon Sanders and Edmon Oude Elferink are also key names in the team.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Erik Jonkman not only is very experienced, but also brings a lot of enthusiasm for his profession. He always finds a solution for the problem. ’

  • ‘The team consists of lawyers with extensive knowledge of cyber incidents. they switch very quickly in the event of a cyber incident and know how to bring in the right experts in the field of a cyber attack where the need arises at the time. Their own focus is on breach of personal data and how to secure it, recover it or take further action on it’

  • ‘Erik Jonkman has a great knowledge of cyber incidents and how to guide the initial process in case of a new cyber incident. His is also specialist in the loss of personal data and the GDPR ’

  • ‘Erik Jonkman stands out professionally in all what he does. He is customer-sensitive, has an eye for urgency and being to the point, very knowledgeable, puts your mind at ease, helpful, strong in communication and analysing the problem, creating a strategy, and finally thinking about all possible what-if scenarios. Great individual!’

  • ‘Erik Jonkman is a top lawyer in his field, top legal advices, high quality service, practical, focused on the case and fast. Extremely driven and service-oriented. Highly recommended professional. ’

  • ‘In short I think the people of the team are very well qualified and driven which makes them like a partner in crime while delivering their services. They are always answering their phone and very cooperative. Just a pleasure to work with.’

  • ‘The team we worked with at CMS were very professional, high level of in-depth knowledge, approachable and in general pleasant to work with.’

  • ‘Erik Jonkman had guided us through our data privacy & protection project with a lot of knowledge, patience, and professionalism. We would recommend him (and the team) to others when needing legal advice on these topics.’

Key clients

  • ASR
  • KNVB
  • Primark
  • SkyShowtime
  • AIG
  • Beazley
  • Chubb
  • Accor
  • Arcelor Mital
  • Lemonade
  • citizenM
  • I-SEC International Security
  • Kubota
  • ID Logistics
  • Corten Capital

Work highlights

  • Advising AIG on cyber security incidents and data breaches for AIG cyber insureds.
  • Advising Chubb on cyber security incidents and data breaches for Chubb cyber insureds.
  • Advising Beazley on cyber security incidents and data breaches for Beazley cyber insureds.

Lawyers

Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.

Practice head

The lawyer(s) leading their teams.

Katja van Kranenburg-Hanspians, Erik Jonkman