Bitdefender has just published a blog detailing security issues it found with Wyze cameras.
https://www.bitdefender.com/blog/labs/vulnerabilities-identified-in-wyze-cam-iot-device/?clickid=1QAXNuUMcxyITV8Qal2pJVYFUkGQNswxqTQRUc0&irgwc=1&MPid=10078&cid=aff%7Cc%7CIR
The blog and associated white paper is interesting reading, but probably of more importance to most is the link to the free Home Security scanner.
https://www.bitdefender.com/solutions/home-scanner.html
This does a thorough (takes 10 minutes or so) scan of your network identifies all the devices, then does a security audit on them all and gives recommendations for improving security. Well worth trying!
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