Data leak in the Netherlands: What developers should learn from this

A series of customer data leaks involving Blauw, a Netherlands market research firm, has exposed personal data for large numbers of Dutch consumers — reported figures include roughly 700k VodafoneZiggo customers, 780k NS customers, and 22k concert attendees — and may affect additional clients; the article emphasizes the national impact and offers developer-focused recommendations (secure coding, dependency management, scanning) but lacks technical details, attribution, or IOCs.