on 22-11-2013 10:50 AM
Thank you for your first post to the community and welcome to the Sky Help Forum.
Anyone could take the viewing card out of your box or using the remote control find out what the number was and use that information to access your account.
The other details we ask for when signing up for My Sky are a little more personal and safer.
Anything else I can help you with please post again on the relevant board
Have a good weekend.