Thank u for your quick reply

At my office there is antivirus software and our company IT regularly doing updates and other necessary this hence there is no chance for a virus attack at all.

As mine is competitive field i have fellow rivals, i strongly believe this their activity but i can't complain without any evidence and knowledge of persons. But i believe one of my colleague is a computer expert, this may be his activity but i'm fed up with this. How can I protect me from this interfere. Believe he has set up to share my computer some how, I wonder whether it will be a remote desk top connection or just hacking my files. One this i noticed my C drive was shared, i removed the share but when i reboot it become automatically shared again. How this is possible.