How does Quick Heal Works ?
Viruses can attack the computer by infecting executable files
and certain portions of the floppy or hard disk. Quick Heal
has scanners that check a file for viruses. Quick Heal has a
database of signatures using which it can determine if a
file is infected or not. Quick Heal has a Heuristic scanner which
also detects unknown viruses! So much for virus detection and
removal. Quick Heal's 'On-line Protection' is a Virtual Device
Driver (VxD) which Hooks the File System Driver for protecting
the system from known viruses. Which traps a virus if a infected
file is run. Once loaded the utilities provide protection till
the machine is switched off.