I had installed norton on my other PC before i got bitdefender, like i said i used to offer me good protection. I used to slow my pc only during the scan process. I used to borrow my friends stuffs and use it on my pc, it had great detection. Still now Bitdefender Didnt catch what norton had. The IDM Patch was never caught by BIS but was detected only from Trend Micro and Norton. And now i am wishing to buy a norton product for myself, as soon as my ESET expires. In my current PC. Many of my friends are still using norton, until now they say their pc is awesome. SO if u still hav doubt why dont u test yourself?
That IDM patch may just be a false positive. Because 2 detection is not enough to say the file is malicious since every crack tends to be detected by antiviruses even they are harmless. Especially the one is from norton as it says every file suspicious if it's too new and not being used by many of its users.
Norton's raw file detection is horrendous as you can see from the malware hub in this forum. Surely that doesn't mean anything but not every computer is connected to internet everytime. And it's webshield is pretty much non existent, it can only detect the most common phishing and malware sites which are also being detected by google chrome's and firefox's malware filter anyway. The only good thing that I can say about norton is that its intrusion prevention system is pretty good and able to block network attacks successfully. It's also very light but that's because it does its job mostly online to check a file's reputation. If a file is new and not commonly used by norton users, norton will alert even the cleanest file just because it's newly released. Also the last 2 products I tested from norton (2013-2014) were too buggy. They had tons of issues with windows 8, showing 2 taskbar icons, not able to scan, bsods, random error messages that can't be fixed etc.
Bottom line is if it was 2012, I would glady recommend norton but today norton is just a mess and not worth the money for me. Even the free products such as avira, comodo, avast and 360 are betten then norton.