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Windows Security Updates vs Third-Party Antivirus Programs
Sorry if I sound like an idiot, but I've been wondering for a while (or at least since I heard about Windows ending support for XP) - are both Windows built-in security and third-party antivirus necessary to protect a computer from infection? If so, why?
Windows keeps sending me security patches through Windows Update, but at the same time, my antivirus program (AVG - paid version) is constantly updating its virus definitions as well - what's the difference between the two specifically?
If anyone has any specific insight on this, please weigh in!