Sounds like the browser detected something sketchy. Either it truly was a bad site, something that hijacked your browser, or a corrupted DNS entry.
If you could provide the URL to the site you were trying to go to, as well as what browser (and version) you are using we could probably give a better explanation.
Good morning badgirl7420012,
We're closing this thread since we never got a reply from you. If you still have concerns, please start a new thread and include a detailed explanation so we can more effectively help you.