Google knew its Street View cars were slurping personal data from private Wi-Fi routers for three years before the story broke in April 2010.
When the revelations were made, Google said its map service's cars were merely collecting SSIDs and MAC addresses.
The following month, it said network data had been captured, but this was the work of one engineer.
Six months later Google conceded that payload data
, including emails and passwords, was recorded by the roving photo-motors – but still blamed a rogue engineer.