The first article itself is about why software updates are extremely important for security, and the second one also mentions the following:
"Make sure your operating system, browsers, and plugins are always up to date, because keeping your software patched can keep online criminals at bay."
I have lots and lots of software that I never update like Adobe Acrobat PDF reader, Amazon kindle and whatnot. I never imagined that the consequences could be so threatening described in the first article I linked.
So a few days back I uninstalled all the old software that I didn't use/want.
Is it possible that malware can enter my PC through this outdated software? What happens when I uninstall the software? Does the malware go away with the uninstallation? We can take spyware as an example. If spyware came into my PC through such outdated software, will it have been removed if I uninstalled the software?
I ran my antivirus scan after I uninstalled the outdated software, and it showed my system is clean. I downloaded some other free anti-malware programs as well like Malwarebytes, HitmanPro, Avast... None of them detected any malware in my system except some PUPs. Is this reasonable to assume that my current antivirus is working perfectly as no malware was found that was able to dodge my current antivirus that couldn't dodge other anti-malware?