https://www.techdirt.com/articles/20180523/06345139887/comcast-exposes-customer-wifi-ssids-passwords-customers-paying-to-rent-comcast-router.shtml

Look, when it comes to Comcast, it's obviously quite easy to slap the company around for any number of its anti-consumer practices. Just sampling from the most recent news, Comcast was sued over its opt-out mobile hotspot from your home router plan, the company has decided to combat cord-cutting by hiking prices and fees on equipment for customers who cord-cut cable television, and it also has put in place a similar plan to charge all kinds of bullshit fees on equipment installations for customers who aren't bundling in other services with its ISP offering. You should be noticing a trend in there that has to do with how Comcast handles so-called "equipment rental" fees for its broadband customers and how it handles customers that choose to bring their own device to their home networks instead. Comcast has always hated customers that use their own WiFi routers, as the fees for renting a wireless access point represent a huge part of Comcast's revenue.

Which is why you would think that the company would at least not expose the home networks of customers who use that equipment. Sadly, it seems that Comcast's website made the network SSIDs and passwords available in plain text of customers who were renting router equipment, while those that used their own routers were completely safe.