Can the owner of Facebook know if I spy on Facebook?

Computer

I went to Facebook to find out about a friend I know, and I saw it on Facebook. I heard that it could be caught as spying on a friend. Can the Facebook owner know if I spy on Facebook?

199 3 8 years ago

pu1. There's no way to know

2017-11-25

pu2. I heard there's an application where you can spy on Facebook, but I don't know if it's working

2017-11-25

pu3. Oh... I see... Thank you

2017-11-25

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