Live by the cloud, die by the cloud.
Some pro advice:
If you want security cameras, that requires wired cameras attached to a dedicated, securely located multichannel recorder whose incoming feeds and monitoring hardware are isolated from the Internet and solidity backed up by a hefty UPS. If you require offsite backup, do it indirectly by archiving feeds you encrypt first. For your security and the security of all the innocents who inevitably end up on camera.
For intrusion detection, use dedicated hardware and expose only the "intrusion detected" signal(s) on the Internet. Don't use video triggers. Or at least, if you feel you must use video triggers (doubtful at best), only expose the "intrusion detected" flag(s) to the Internet.
When you make video accessible over the Internet, gated or not, that's the opposite of security.
If you just want to pretend, by all means, go ahead and get "security" cameras where some third party has its invasive little fingers all over your video. I'm sure it'll be fine. /s