Google loves indexing content, any content it can get their hands on. In fact, it isn't just Google, it is any search engine. But there is some content you probably don't want Google to index, and those are pages that reveal how to login to your server and make changes.
Just take a look at the number of CPanel login pages Google has indexed. Yahoo has some and so does Bing. No, the search engine is not to blame, it is the hosting company for not blocking the search engine from indexing those pages.
A "top contributor" at the Google Webmaster Help Forum is venting about the issue. He said:
What can you do? Bug your host.
Forum discussion at Google Webmaster Help Forum.