Information Commissioners Office commissioned the NCC Group to conduct the investigation. NCC acquired 200 hard drives, 20 USB sticks and 10 cellphones from internet auction sites and at trade fairs. 11 percent of hard drives contained personal information of the original owner. A further 14 percent of the drives were too damaged to be readable, according to the ICO report. Only 38 percent of devices had been wiped, and a further 14% were damaged, the report says. Naked Security has been contacted by the ICO to investigate the issue.”]
Source: https://grahamcluley.com/second-hand-hard-drivespersonal-information/