Yes! Especially if you use the same email as you did to register connected devices, and even more so if you use the same password.
When you create a password field on a Web page, there is absolutely no guarantee that the passwords are encrypted on the server you are logging into, nor that the client side application (that is, the application running on your computer) is not sending your login information in the clear if the server isn't using secure http.
If an application is sending your login information in the clear, it is visible to any computer system your computer uses to connect to the server.
For example, let's say you are logging into a website (let's call it A) from your computer (we'll call it . For simplicity, both you and this website use the same isp. So to connect to site B, you have to go through the computers at isp C. In logging in, A sends a request to C, which then sends that request to B. Now, the ISP has a shady employee who routinely snoops through the access logs, searching for things that look like usernames and passwords. Since website B does not use https for login, nor does it encrypt your login information before sending it, that shady employee can see your username and password in the logs.
Now, how many times do you use the same email address and password when signing up on sites? Do you use the same password for your banking site as you do for this one?
Let's say the person who set up the site itself is shady (or just lazy) , and they don't encrypt the passwords. One of the admins is shady and they try to use your email and password (that they have ready access to because they aren't encrypted on the server) on other sites. Even if the site operators aren't shady, your login information is all the easier to get if the site were to be hacked. At least with encrypted passwords, a hacker would also need to Crack the password hashes.
If you use a unique password (and even better, a separate email for "junk") you are better off. However even then, I'm not sure I would want to log into that site from home.
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