I go almost every day online and check for updates. It takes me 5 minutes to check and update about 12 sites.

I then go to clients's websites and update.

That is how I keep my sites secure

When I need feature fgh, I check the choice of plugins that can do fgh and I look for the one that has been updates the soonest. I don't download plugins that have been upated 6 months or oldere. I prefer plugins with last update within a month.