We were given a tip by the awesome Ceri Coburn that something was amiss with the Balboa Water App, a mobile app used for controlling >30,000 hot tubs. You can remotely control your tub, so you can heat it up for when you’re ready, saving power when you don’t use it. Nice idea!

https://www.pentestpartners.com/security-blog/hackers-in-hot-water-pwning-smart-hot-tubs-yes-really/