Safari Website page changing error

Every time I change from one page to another using Safari, I get an error message that says "Norton Confidential is still scanning" and below that says "Norton Confidential has not finished inspecting this page for fraud. Are you sure you want to submit this information?"  Then asks me to click on either Cancel or Continue.  It's really getting annoying having to click on this drop down window when pages are either changed or updated.  Any advice?