No, they aren&#x27;t good at finding malware installed. I installed Norton on my mother&#x27;s friend&#x27;s computer and it found 4 bits of malware. I later installed Malwarebytes and it picked up something like 45 different malware programs! I was surprised so I verified about 12 of them before I realise they were pretty accurate and let it remove them from her system.<p>That&#x27;s a <i>very</i> poor detection rate. I mean, I can confirm that at least 12 nasty malware programs weren&#x27;t detected by a very widely used AV suite!