I'm also using Windows Defender (that got renamed again to Windows Security Center). It's native, it's updated very frequently, and is completely silent (you only get notifications when something really needs your attention). Plus, current Windows 10 Insider Preview builds already have some cool nice additions to it...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
