CivicPlus has blocked our sites from being iFramed on other domains due to security risks. Our customers' security is very important to us and allowing our sites to be iFramed would allow anyone to expose vulnerabilities in iFrames that include Clickjacking, XSS (cross-site scripting), and other malicious attacks.
At CivicPlus we take your site security seriously and block iFrames to help block outside malicious behavior.