Avast had good reviews for Mac so I installed Security (paid version), it's VPN, and password manager yesterday. I think I made a huge mistake. I have a Airport Time Capsule between my devices and modem set to create a network and the VPN immediately began wreaking havoc by blasting outgoing connections like some kind of shock and awe thing. Every time I disconnected it, it immediately reconnected and my devices were doing the same. When I looked on LS the [b]Avast[/b] proxy was making connections faster than I could deny them to hundreds of unknown IP addresses all over the world and what I later determined were a list of my saved work addresses that included sensitive gov't sites that I am actually a little worried about (I just left the public sector).
I got Avast on the phone, did a screen share and as the rep and I watched together she had no idea what to do except that she would pass the info on. She recommended I run their anti-virus. I asked if someone would be getting back to me since I'd just paid them $150 and she said I could email feedback to them. I've uninstalled all of the software but I see that on LS that I didn't get it all as there is still incoming/outgoing.
BTW, to answer the question (please forgive the details above), I've also burned through Kaspersky, an accidental McAcfee installation (my bank), and currently use Malwarebytes because Apple told me to. I give up. If anyone has any thoughts I would be grateful. I did notice on an Avast Forum that there were some issues that other users of LS have identified. I am wondering if there is any connection.