When the trade body for online advertising was found in breach of the General Data Protection Regulation (GDPR) by the Belgian Data Protection Authority (APD) last month, it was not the fine of 250,000 euros (then-U.S. $286,000) that stung the most.

Neil Hodge is a freelance business journalist and photographer based in Nottingham, United Kingdom. He writes on insurance and risk management, corporate governance, internal audit, compliance, and legal...