Malware Program and its Effect on your PC
Malware is a software program harmful to your computer. Malware planted by the attackers helps them gain control on your system. Malware includes worms, viruses and Trojan horses. If the attacker can gain control, data and vital information from your PC will get leaked out. Malicious code running on your system can do many jobs such as delete configuration files, monitor your keystroke to help the attacker, send streaming video etc. Malware has the ability to create excessive traffic to deny access to the user. If the operating system is vulnerable, malware can control the other systems on the network. Some malware can be easily removed from the system. Malware can be detected using two types of techniques; signature-based techniques and anomaly based techniques.
Malware affects your system in the following ways:
- Service attack denial
- E-mail invasion
- Reinstalling operating system
- Formatting hard disk
Service attack denial
The hacker sends a request to server, but the user is unknown and the server fails to establish a connection. This can lead to system crash. So the attacker can deny the access through overloading the server and by slowing down the system.
This technique is very common nowadays. E-mails are sent over the internet through SMTP (Simple Mail Transfer Protocol). The attacker accesses control of a number of e-mail messages and send spam messages to thousands of users. This is known as SMTP hijacking. This enables the user to send an e-mail to an unsuspected user without specifying the details of the original sender.
Reinstalling operating system
OS is the interface between you and your computer. By reinstalling this you can lose your entire files and drivers. If the malware reinstalls your OS that will negatively affect the entire computer system.
Formatting hard disk
Hard disk is a magnetic disk in which you can store computer data. Formatting hard disk means erasing all the details contained in it which cannot be retrieved later .This is another major attack on your system and can have irreparable consequences.
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