Information is power required. But,
if the power goes.into the wrong hands. Data stored in
the systems and en-route is encountered
to a various number of risks. Vital information
may be stolen or modified to pursue
some selfish motives or simply for fun/
adventure. You must have heard of
‘virus’ and ‘hacking’. Do you know the
full form of the acronym ‘VIRUS?’ It
means Vital Information Under Siege.
Actually, virus is a program (a series of
commands) which replicates itself on the
other computer systems. The effect of
computer viruses can range from mere
annoyance in terms of some on-screen
display (Level-1 virus), disruption of
functioning (Level-2 virus) damage to
target data files (Level-3 virus), to
complete destruction of the system
(Level-4 virus). Installing and timely
updating anti-virus programmes and
scanning the files and disks with them
provides protection to your data files,
folders and systems from virus attacks.
Data may be intercepted in the
course of transmission. For this, one
may use cryptography. It refers to the
art of protecting information by
transforming it (encrypting it) into an
unreadable format called ‘cyphertext’.
Only those who possess a secret key
can decipher (or decrypt) the message
into ‘plaintext’. This is similar to using
‘code words’ with some one so that
others do not understand your