Hi there!
We have not yet had problems with abuse for SurillyaID, but as with every online service, it will eventually come to happen. So we worked on 2 new things to prevent abuse using SurillyaID, making it a more secure and viable option! First, we implemented email verification on sign up - so imposters can't use your email address to sign up. Second, we also implemented IP checks, to see if your IP is known to be a scammer/spammer IP. If your IP has been reported a multiple amount of times, you will be locked from registering - login will continue to be done without email or IP verification, so for additional safety, you can turn on 2FA for your account, as talked about in https://forum.surillya.com/showthread.php?tid=29.
Future plans include anti-bot checks (captcha) on both the login and register pages, stay tuned.
Best regards Surillya