No, it isn't.
Norton snags that as an unsafe site citing -
The hostname in the website’s security certificate differs from the website you are trying to visit.
Error Code: DLG_FLAGS_SEC_CERT_CN_INVALIDIt could be that you have been infected with what's known as a Google redirect.
There are two programs I would advise you run, the free version of MBAM and AdwCleaner.
https://www.malwarebytes.com/mwb-download/https://www.bleepingcomputer.com/download/adwcleaner/ - Scroll down the page for user instructions.
As for MBAM, click on Scan in the left pane and select Custom Scan/Configure Scan and check the box for at least C:
You can also opt to include the Rootkit scan.
As you haven't said which version of Windows you are using and as you should also check the Hosts File to see if it needs defaulting, I'll let you Google for that.
