Just a quick debrief to explain how my suspicions were aroused that I might have issue(s)........
After reading one of Qman7's extremely informative posts and following a link (or 2) to here http://www.dslreports.com/faq/4190 which explained the importance of checking 'listening' ports (under the cmdprompt code 'Netstat -an') every once in a while, it seems that, after following the instructions to compare port numbers (with an on-line 'suspected trojan port list') that the number 445 is displayed on my computer which appears to match something called the 'Nimda' worm/trojan/virus.
The line on the CMDprompt looks something like this :-
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING
So, in a nutshell, the question I am asking is this : does this number '445' mean I am infected in some way?
I should add that my pc (notebook Samsung model NP3530) is running just fine, no suspicious activity/behavior whatsoever, minimal CPU usage and temperature. Scans with Zemana, E-set, Reason, Win Defender all come up clean and I also have the other security suites in place as illustrated in my signature below.
However, I must add that this device HAS been heavily infected in the past, mainly during 2013 when I was a beginner pc user and was very naive about internet security at that time. I am now far more aware and pre-cautious (as can be seen), but am a little worried that this '445' code might be something carried over from an infection I acquired many months ago that is deeply-embedded in Kernal somewhere that has so far evaded the various scanning tools I use.
If this IS in fact an infection of some kind, re-formatting/re-setting my device to factory settings IS an option as I have backed up and don't really use my computer for anything other than recreational surfing.
. I should add that I don't consider this to be an urgent matter, but any pro/expert opinions on this matter would be much appreciated
Edited by robby501, 08 October 2016 - 08:59 AM.