When I first open my internet browser it goes to my homepage (Juno), but within a few seconds I get hijacked. Sometimes a page opens saying my McAfee or Norton's or other virus protection has expired. Sometimes my real McAfee stops it. Sometimes I can just hit "Back" and sometimes I have to exit and reopen the browser.
I've run full scans with McAfee, Malwarebytes, Malwarebytes Adware, and Hitman Pro, but none have cured it.