front and back hide dashcam

[zio_mangrovia]

I'm going to install dash cam (both front and back side) for my car because I want to protect about acts of vandalism, especially in car parks.
My car is Opel Astra 1.4 T 2011
It's necessary spy IP camera because if thief thinks to steal it, with a hide small device I can deceive him.
Otherwise I thought to device which save video directly to Cloud.
Do you know devices at about maximum 100 € with these characteristics?

thanks