Karin Spaink provides this English summary of a breach that was reported in De Telegraaf, Feb. 27, 2010 and that affected hundreds of people:
The 2009 tax reports of all civil servants, city council members and assistants of the municipalty Woudenburg/Scherpenzeel were leaked; newspaper De Telegraaf received a paper copy of all papers. The papers include name, address, SSN, salaries, other income, bank savings, deductions etc of everybody working for the municipality and the city counci, from the mayor to the members of the fire brigade. It’s unclear how the data were leaked and why they were sent to the press.
City Hall has asked the police to investigate the matter.