Belgian Agency Said by Groups to Find Online Ad Privacy Flaws

A standard digital marketers use to get permission to send consumers ads fails to meet European privacy law requirements, a Belgian data protection authority has preliminarily found, according to groups that have seen the decision.

The standard developed by IAB Europe, an association for online advertising companies, insufficiently limits access to potentially sensitive user data, the Belgian Data Protection Authority found, according to the groups.

The Belgian authority Monday declined to disclose the findings, saying the issue was still under discussion in its litigation chamber. The authority, however, has shared the findings with parties that filed a complaint with the ...