Most office copiers these days contain hard drives that store data from every copy, print-out and scan you and your colleagues have ever made. The security risk is huge but many companies neglect to wipe their copier’s hard drives when they replace the equipment. Recently, a piece on CBS news exposed the dangers of this kind of security leak by searching through four used copiers purchased from a New Jersey warehouse. They mined the hard drives from the copiers with free software, available to anyone on the Internet.

What the investigators found was shocking. One of the copiers had belonged to the Buffalo, NY police department and it contained everything from a list of wanted sex offenders to detailed domestic violence complaints. A machine from the Buffalo police narcotics unit included information about targets in a major drug raid. Data culled from a construction company’s copier yielded the architectural floor-plan of a building near ground zero, and pay stubs with the names, addresses and social security numbers of employees. The fourth machine, from an insurance company, contained 300 complete medical records, including the results of blood tests, family medical histories, and cancer diagnoses.

As more and more of our sensitive data is digitized, we need to keep up with security protocols apace. Companies should be keeping careful track of every device where information is stored: computers, printers, copiers, voice mail and more. Every storage location is a potential security hazard and should be monitored, maintained and wiped clean before disposal.