Wisconsin Department of Revenue

Disclosed Jan 1, 2007171,000 affectedUnverified

SSNs printed on tax booklets mailed to 171,000 Wisconsin taxpayers

Printer Ripon Printers inadvertently printed Social Security numbers on the front of Form 1 tax booklets mailed to about 171,000 Wisconsin taxpayers.

What is known

People affected	171,000 (as reported by the organization)
Disclosed	Jan 1, 2007
Attack	Vendor breach
Data exposed	Social Security numbers
Sector	Government · US
Status	Unverified: not yet confirmed by an official notice, a filing or the organization

History of this record

Added2026-09-25

First recordedby seedSource

First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.