I've just listened to an #ITSecurity presentation, which gave me a few more nightmares to worry about.
First, there is #Shodan , a search engine for the #Internet (as opposed to the World Wide Web), aka "how to find hackable things on the Internet". If you have any devices accessible via the Internet - such as security cameras - it can probably be found there. And there are numerous people and companies who leave these devices unsecured - as the presenter demonstrated.
Also, #USB cables exist which look like the real thing but contain secret WLAN access for hackers. They cost around $200 these days, and can only be distinguished from the real thing by #CT scans.
https://www.pcworld.com/article/2557422/how-to-tell-if-your-usb-cable-is-hiding-malicious-hacker-hardware.html
It is 10:20 Central European Time. Do you know what your networks are doing?