Indoor security cameras and privacy?

Hi, I'm looking to buy an indoor security camera and I was hoping to buy something that doesn't just open my home network to every script kiddy out there. Actually, doesn't even have to be a "security" camera, just a camera I could use to record stuff indoors in high quality. (The real goal here is to spot where are mice coming from and going to. Yes, the little menaces have parties every night, and I already closed the most …

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