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Portrait of Erik Jonkman

Erik Jonkman


Atrium - Parnassusweg 737
1077 DG Amsterdam
PO Box 94700
1090 GS Amsterdam
Languages Dutch, English

Erik Jonkman is an advocaat in our IP / TMC Practice Group and heads the Privacy & Cybersecurity Team of CMS in the Netherlands. He specializes in matters that involve information technology and data. 

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Relevant experience

  • Providing 24/7 incident response in dozens of domestic and cross-border cyber incidents, including data theft, ransomware attacks, CEO fraud and IT system failures (2021)
  • Representing an IT supplier in a high-profile financial outsourcing dispute (2020)
  • Advising a wide variety of key clients on GDPR-compliance in relation to COVID-19, including international data centres, manufacturers and hotel chains (2021)
  • Representing a major logistics company in an enterprise resource planning software licensing dispute (2021)
  • Reviewing cyber insurance policies (2020)
  • Representing a public transport company regarding the purchase, development and implementation of mobility-as-a-service software (2020)
  • Representing a financing company in a complaint procedure before the Dutch Data Protection Authority regarding the right to be forgotten (2020)
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Memberships & Roles

  • Dutch Association of Information Technology and Law (NVvIR)
  • International Association of Privacy Professionals (IAPP)
  • Privacy Law Association (VPR)
  • Copyright Law Association (VvA)
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  • Information law, Grotius Academy for Post-Graduate Law Studies
  • Dutch Law (Internet, Intellectual property & ICT), VU Amsterdam
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Show only
05 March 2021
Data pro­tec­tion and cy­ber­se­cur­ity laws in Neth­er­lands
Data pro­tec­tion 1. Loc­al data pro­tec­tion laws and scope Gen­er­al Data Pro­tec­tion Reg­u­la­tion ("GDPR") (Alge­mene Ver­or­den­ing Gegevens­bes­cherm­ing)The Dutch GDPR Im­ple­ment­a­tion Act ("DGIA") (Uit­vo­er­ing­swet...
22 October 2020
CMS launches data breach app
CMS launches its Breach As­sist­ant app, a tech­no­logy plat­form that gives busi­nesses af­fected by a po­ten­tial data breach or oth­er cy­ber in­cid­ent a head­start dur­ing the first crit­ic­al hours. CMS has de­veloped...
14 July 2020
The Chan­ging Face of Cy­ber Claims
At the in­vit­a­tion of glob­al ex­perts in in­sur­ance brok­ing and risk man­age­ment, Marsh, and IT con­sult­ants, Wave­stone, CMS has con­trib­uted to The Chan­ging Face of Cy­ber Claims study which looks at prac­tic­al...
CMS ad­vised Korean in­vestor Hana Al­tern­at­ive As­set Man­age­ment on the ac­quis­i­tion...
CMS ad­vised Korean in­vestor Hana Al­tern­at­ive As­set Man­age­ment (HAAM) on the ac­quis­i­tion of the of­fice build­ing EDGE Am­s­ter­dam West at Basisweg (Am­s­ter­dam Slo­ter­dijk) from Edge Tech­no­lo­gies (OVG). The...
The EU Gen­er­al Data Pro­tec­tion Reg­u­la­tion
The EU data pro­tec­tion land­scape, hav­ing re­mained largely un­changed since 1995, is now on the brink of a rad­ic­al trans­form­a­tion. After ex­tens­ive ne­go­ti­ations, the GDPR was form­ally ad­op­ted on 4 May 2016...
CMS ad­vised Naut­ic Part­ners, LLC on its ac­quis­i­tion of En­dries In­ter­na­tion­al...
CMS has ad­vised Naut­ic Part­ners, LLC on its ac­quis­i­tion of En­dries In­ter­na­tion­al Europe B.V. The ac­quis­i­tion forms part of a glob­al deal on which Locke Lord ad­vised the cli­ent.En­dries is a lead­ing dis­trib­ut­or...
CMS ad­vises Auto­Scout24 on the ac­quis­i­tion of Auto­Trader.nl
CMS has ad­vised Auto­Scout24 Neder­land B.V., a sub­si­di­ary of Scout24 A.G. ("Scout24"), on its ac­quis­i­tion of all shares in the cap­it­al of the Dutch di­git­al auto­mot­ive clas­si­fieds portal European Auto­Trader...