A computer system Threat is anything that leads to the loss of data or physical damage to data or hardware and / or the basic framework. Knowing that computer security threats are identified is the first step in protecting computer systems. Hazards can be caused by intentional, Accidental or Natural disasters.

In this article, we will acquaint you with the dangers of common computer systems and how you can protect the system against them.

What is a Security Threat?

Security Threat has been defined as a risk that can potentially damage computer systems and the organization. This can be caused by a body such as someone stealing a computer that contains important data. Reason can also be non-physical such as a virus attack. In these Tutorials Chain, we will defined a threat as a possible attack from a hacker that may allow them to access Unauthorized Get on a computer system.

What are Physical Threats?

A physical danger is a possible cause of an event that may result in damage or physical danger to the computer system.

The following list categorizes Physical Hazards into three (3) main categories;
  1. Internal: Threats include fire, unstable power supply, room moisture hardware, etc.
  2. External: These hazards include lightning, flood, earthquake etc.
  3. Human: These threats include theft, Vandalism of Basic Infrastructure and / or hardware, disruption, accidental or intentional errors.

To protect computer systems from the above physical hazards, an organization should have physical security control measures.

The following list gives some Potential measures that can be taken:

  1. Internal: Fire hazards can be prevented by the use of automatic fire detectors and fire extinguishers that do not use water to fire. Unstable power supply can be prevented by the use of voltage controllers. An air conditioner can be used to control humidity in the computer room.
  2. External: Lightning Protection systems can be used to protect computer systems against such attacks. The Lightning Protection System is not 100% perfect,But to some extent they reduce the loss of lightning. Housing computer systems in high ground are one of the potential methods of protecting the system against flooding.
  3. Humans: Threats such as theft can be prevented by the use of closed doors and confined to computer rooms.

What are Non-physical threats?

A non-physical threat is a potential cause of an event that can result in;
  • Loss or corruption of system data

  • Disrupt business operations that rely on computer systems

  • Loss of sensitive information

  • Illegal monitoring of activities on computer systems

  • Cyber Security Breaches

  • Others

Non-physical threats are also known as logical hazards. The following lists are common types of non-physical hazards;
  • Virus

  • Trojans

  • Worms

  • Spyware

  • Key loggers

  • Adware

  • Denial of Service Attacks

  • Distributed Denial of Service Attacks

  • Unauthorized access to computer systems resources such as data

  • Phishing

  • Other Computer Security Risks

To protect computer systems from the above-mentioned Threats, an organization must have logical security measures. The following list outlines some possible measures to protect cyber security threats
An organization can use anti-virus software to protect against viruses, Trojans, worms, etc. In addition to anti-virus software, an organization may also take control measures to access external storage devices and access websites that are most likely to download unauthorized programs on users’ computers.
Unauthorized use of computer system resources can be prevented by using the Authentication system. Authentication method can be in the form of users id and strong password, smart card or biometric, etc.
Intrusion detection / Prevention system can be used to avoid denial of service attack. There are other measures that can be taken to deny service attacks.


A threat is any activity that can lead to data loss / corruption through dissolution of common professional functions.

Physical and Non physical hazards are

    • Physical hazards cause damage to computer system hardware and infrastructure.
      Examples include Theft, vandalism through natural disasters.
  • Non-physical threats target software and data on computer systems.


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