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✶ Most of the malware programs are distributed over the Internet, often bundled with
other software.
✶ The best way to guard against malware is to install antivirus software.
ANTIVIRUS
An antivirus program is a software which can detect the presence of a virus on a computer and
remove the virus. Eradicating a virus is the term used for cleaning a computer.
There are several methods of eradication:
✶ Removing the code in the infected file which corresponds to a virus.
✶ Removing the infected file.
✶ Quarantining the infected file, which involves moving it to a location where it cannot be run.
✶ Inform the user about the presence of the malware and the action that has been taken.
✶ Separate all the infected files and applications so that the infection cannot spread further.
Some well-known antivirus programs are Norton, AVG, McAfee, Symantec, SmartDog,
Kaspersky, etc.
FIREWALL
The term ‘firewall’ originally referred to a wall intended to confine a fire or potential fire
within a building. In computer, a firewall is a software or hardware-based network security
system that controls the incoming and outgoing network traffic based on applied rule set.
A firewall acts like a gatekeeper and prevents unauthorised access to a computer network.
It inspects every data packet that arrives at a network and decides, on the basis of a set of
predefined rules whether to pass or not. Firewall establishes a barrier between a trusted,
secure internal network and another network (for example, the Internet) that is not assumed
to be secure and trusted.
Restart
Computer safety refers to the protection of computer-based resources against
unauthorised use or physical damage.
Authentication is the process of verifying a user’s identity before granting him or her
access to a computer system.
Password protection, face recognition, voice recognition are some important techniques
for computer safety.
Malware is designed to damage or do unwanted actions on a computer system.
The different types of malware are virus, worm, trojan horse, spyware, zombies,
ramsomware, rootkit and backdoor.
A set of programs that identify and remove malware are known as antivirus software.
A firewall is a type of security program or hardware that prevents unauthorised access
to a computer network.
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