In other words, on March 5th, change the clock to March 7th. Chances are good that you do not have a computer virus. If you did, then you probably would have known by now. I wanted to present facts and figures on computer viruses. That's not saying that small firms are immune.
Larger firms have more of a security problem because of the large number of computers.
It's more difficult to control every computer in a large firm. Employees and employers should be educated in computer viruses and the threat they pose. Make it policy that any floppy disks brought into the firm should be scanned by the MIS department or the LAN administrator. It's to the point now that if a client calls with a computer problem, I first suspect a virus. Most of the time it's either operator error or the hardware, but I still check the system.