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Backdoor
Backdoor is a type of malicious software which enters into the computer through bundled with
other software or files. It is used to gain remote access to the host computer.
Tech
Funda
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.
Recap
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.
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