By dowloading dodgey software of a dodgey website.
never
1950
The Barbadons
The British Army
cornwallis
Give three suggestions of how you can ensure viruses are not introduced to the computer system from an external source?
The organs of the immune system fight viruses and bacteria.
The land revenue system which was introduced in Punjab was the Zamindari system.
the viruses help the immune system adapt and get stronger
The dual system in Bengal was introduced by Lord Welesselly
The iqtadari system was introduced by Iltumish in india. This is a system pertaining to division/partition of land.
vaccine
Windows viruses do not affect the Ubuntu system .
A Linux system generally gets the least viruses
Indians introduced it.
Body has got immune system. This immune system or the body immunity forms the antibodies to fight the viruses. The immunity against the viruses is usually life long.
Malwares, computer viruses and worms are some of the things that when introduced to a computer will destroy the data.