You guys may have questions whenever or not playing a Club Penguin Private Server is illegal. Same thing when hosting one. Disney and Club Penguin disagree on Private Servers and they thought that entering your information may result in your account getting the risk of getting hacked or something.
According to a Club Penguin Support staff member, she told me the following from a discussion I made about CPPSeses:
Please understand that websites like CPPS are not part of Club Penguin and entering your penguin information into sites like these may result in your information being compromised or a ban on you account being placed.
And there's another one, when I solemnly swore not to play a CPPS, not even host one, there's another reply:
I also want to remind you that entering your penguin information into other sites than Club Penguin is against the rules...
What do you think about these responses I received from the Support staff member? are you never going to look CPPSeses the way they were before? Would you risk playing them? In that case, let out your thoughts about it.
Update: They also confirm that using CPPSeses are considered cheating if used, just like item and coin adders, and may result in a 72 hour ban (3 days) or forever, depending on the punishment. These sites won't protect your account and they might use the information typed to access your account. Therefore, A different password on a CPPS and on CP may reduce this risk. Always make sure that the passwords are different.