A member of the public found the USB stick containing 2.5GB worth of unencrypted data in Queen's Park London, before handing it into the Sunday Mirror who initially broke the story.
Unbelievably, the data contained top secret information regarding security and safety measures, such as ID information, CCTV camera and tunnel locations and special measures to protect the Queen!
The UK and Heathrow have some of the most robust aviation security measures in the world and we remain vigilant to evolving threats by updating our procedures on a daily basis.
We have reviewed all of our security plans and are confident that Heathrow remains secure.
We have also launched an internal investigation to understand how this happened and are taking steps to prevent a similar occurrence in future."
Luckily, here at Recover-Key, we don't store any data on USB sticks, but we can also help you find lost USB sticks as well as lost keys. Come and have a look.