I don't trust webcams in the tent. That video stream is evidence broadcast live or at least a video record of criminal activities. I do have some for home surveillance that I've verified to be secure, but even then, I won't point them at anything incriminating.
If you do use webcams for your tent, I recommend restricting their streams to within your network. If you are going to stream outside to check on things when you're out and about, make sure that:
a) the connection is encrypted with TLS 1.2 or greater
b) the connection is authenticated to you in specific
c) there are no backdoor accounts built into the device to allow remote access
d) the device doesn't phone home
That last one is where things fall apart. It's pretty common these days for electronics coming out of China to phone home. Cameras, in particular, are found all the time sending traffic to China.