I’ve had good result using Malwarebytes. Free or premium version you get the 
same underlying detection engine.

https://www.malwarebytes.com/mac-download/ 
<https://www.malwarebytes.com/mac-download/>

robin

> On 14 Dec 2019, at 8:52 am, Juliet Kitson <billand...@gmail.com> wrote:
> 
> G'day All
> Which anti malware is recommended.
> Regards Bill
> Mac book air Running 10.15.1
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