Computer Security Threats

Computer Security Threats

         Computer systems are vulnerable to many threats. These threats may cause to stop the computer to work fast, harming stored data and information, erase data from the hard disk, and removing some programs which are installed on the computer. So, today in this blog Knowledge of Andromeda is going to give you information about different computer security threats and their indications and symptoms.

Types of  Threats:

         There are different types of computer security threats that can harm the computer. Some of them are:

• Viruses
• Worm 
• Adware
• Hackers

 Viruses:

                  Computer viruses are malicious programs. They are the most common computer security threats. A computer virus is a program written intentionally to alter the way a computer operates.

This virus comes in the computer by attaching copies of its to the file and program files, document, etc So, that the user clicks on them and the virus activates. These viruses may cause harm stored data and information, unusual error messages appear, erase data from the hard disk and other problems may occur in the computer system.

Worms:

              

Worms are malicious programs that are spread through networks from one device to another without the user's knowledge. Worms can also spread by copying themselves from disk to disk or by email. It may cause to stop some programs, slow down the computer, and destroy files in the system.

Types of computer worms:

SQL slammer

The Blaster worm

Sesser worm

IRC worms

Email worms

Adware:
                                                             

                    Adware is another malicious software that automatically installs on the computer. It automatically plays, displays, and downloads advertisements usually without users' knowledge. These advertisements may be in the form of pop-ups. This software installs other malicious software on the computer. They record user's behavior on the Internet displays ads etc.

Hackers:

            Hacking can be defined as the unauthorized use of the computer, network, and recourses. People who indulge themselves in this process are called hackers.

Hacker Steals:

• Client and customer information 
• E-mail addresses use for spamming
• Passwords etc

Indications when viruses enter in computers:

• Computer restarts on its own.
• Unusual error messages appear.
• The computer locks up and stops responding.
• Unexpected icons appear on the desktop.
• The computer runs slower than usual.
• Antivirus software is disabled or does not run.