Free trial protection that is! Try Norton (30 days free) and Malwarebytes (14 days free) and see what you think.
Norton and Malwarebytes are a great combination. Norton primarily concentrates on the major nasties; Malwarebytes provides complementary protection against different types of threats often missed.
Despite downloading from the three device page, Norton will install on your single device and prompt you to install it on other devices.
Malwarebytes will download and install the full version and prompt you to purchase it. After 14 days real time defence will be turned off and protection will only be provided when you run a manual scan.