Thanks everyone for all the help and suggestions regarding my possible
self-employment in my recent "Computer wholesalers" thread. I really
appreciate the accumulated wisdom of this group and would like to put one
further point to you regarding computer virus and other malware removal.
It's obvious that one of the tasks a computer maintenance guy is going to be
asked to do is to deal with virus/trojan and other malware infections and to
get rid of them. It wasn't too bad in the early days of computers when
viruses were more of an annoyance rather than harmful but todays viruses and
trojans are much more sinister, looking for banking and credit card info and
suchlike. They are also much more difficult to get rid of and have even
become 'intelligent' in that they will actively hide themselves away and
even prevent downloading and/or running of removal tools.
Given that, can we ever be 100% certain, beyond a shadow of a doubt that we
have absolutely, categorically got rid of the nasties? It's one thing to try
and get rid of nasties on my own machine when it's my own bank
account/credit card details at risk but when it's a paying customer and
their details at risk...?
A mate of mine doesn't mess about - at the first hint of an infection he
deletes the system partition of his hard drive, creates a new partition and
then rebuilds from a known good, clean image that he's got. Is that overkill
or, considering that a paying customer's details are at risk and I'll be
putting my name to the repair, is it the best thing to do? Any other
suggestions on disinfecting a machine and knowing that it's 100% clean and
safe after the procedure?