The truth about security software

I have just upgraded my 27-inch iMac and I noticed my Kaspersky for Mac software was not working properly. It successfully activated, but I found Time Machine backed up at a snail’s pace to my external NAS drive. Apple advised an erase and reinstall, which returned Time Machine to normal speed. When I redownloaded and activated Kaspersky, Time Machine became slow again. I am now on my second erase and reinstall. I will leave the Mac alone when it does its first backup but feel I should avoid Kaspersky. Do you have any advice on an alternative security software? Martin Tuck Yes: you don’t need it. OS X is already extremely secure, and it is automatically updated for free as new vulnerabilities are discovered. My personal view is that third-party security packages exaggerate the threats you are exposed to, and offer nothing that isn’t already handled well by OS X, your router and your ISP. Worse still, as you have found, the software can itself be a source of slowdowns and software incompatibilities.