No. It seems that your router is picking up your request to connect to a web site and - for whatever reason - it believes it may be a dodgy site.
You don't see it so often now, but some time ago, clicking a link in a Google search would raise a similar warning. Google regularly trawls the internet for fishy sites and lets you know in advance if you're going to a bad place.
If you believe that you are trying to go to a legit site, and you can do so without impunity on a desktop browser, you might want to get in touch with Cisco support.