7 Types of Computer Security in 2021 | Act Now!

By TheJustRead

Recently, “information” is included in the assets of individuals and companies. Information is managed in various forms such as paper media, computer hard disks, and USB memory sticks. Due to the spread of the Internet, security measures have been sought for these types of information, but what are they? There are various types of computer insecurities, DDoS attacks, ransomware, and other types of computer security threats that have become popular.

Still, many cyber-attacks are not as known, as attacks on websites. It is crucial for companies that provide online services, and those who have been in charge of security measures at the company, that they develop concrete security measures to familiarize and handle such computer attacks. Learning from the latest cyber-attack mechanism, more specific actions can be implemented.

Types of Computer Security

This time, we will introduce what kind of computer security is there in 2020. It is important as a computer user to be aware of the types of computer security and gain knowledge on how to implement it in order to avoid these common attacks. The tips below in this article explain the types of computer security. If they are put into consideration, computer security is almost assured. People in the past as well as in present times have used these tips and greatly benefited from them.

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Malware Protection

Digital blackmailing attempts by so-called ransomware are critical not only for large networks and hospitals but often also for private users – especially if they have not backed up their valuable data. Malicious software encrypts files and demands a ransom to decrypt them is one of the most common threat. There are also many types of threats that target online banking, games, in-game items, and there are others that only cause destruction.

malware protection-types of computer security
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Contrary to promises, neither the operating system itself nor “built-in” virus scanners, like the Windows Defender, reliably protect against all types of new malicious codes. The primary means of spreading malware are emails with links for special offers, or online services that direct users to harmful websites, or ultimately manipulated attachments of the mail, such as alleged applications or invoices.

A good, up-to-date Malware protection product has a combination of sophisticated technologies that can detect malware at several levels and in different places.

Network Segments

Admittedly, the idea sounds complicated. The idea behind this, however, is that potential attackers only have to find a weak point in the SmartTV or the webcam to gain access to all other devices and thus also the stored data, if they are served by single router or modem. Attempts to extortion or pure destruction are often the result. This can be curbed by using more than one network or implement network segmentation. This is easier to set up than expected.

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One of the steps is to stop the “misuse” of the WLAN. In this way, all devices that only need Internet access but do not need to access other devices or data can be “disconnected” and placed in a separate network, and thus criminals can be locked out. Similarly, network segmentation can be implemented by subnetting and configuring VLAN on routers. Each network is separated from other and hosts are defined on the basis of access requirement. The devices that need access to the local network only, can be isolated from the internet and that can stop harmful internet traffic reaching them.

Apart from computer security, network segmentation also helps in reducing congestion over the network.

A Multi-layered Defence

It is not enough to strengthen the security of terminals on just a single layer such as antivirus software does. Multiple types of computer security can be implemented. For instance, a house with only a lock at the entrance, as compared to a house with multiple security features such as lock, surveillance camera, and sensor light; the latter will have a lower risk of getting into a burglary. The same applies to corporate security, where it is necessary to provide multiple layers of defense to reduce the risk of further intrusion.

Example of Multi-layered Defence

In addition to firewalls, IPS (Intrusion Prevention System)/IDS (Intrusion Detection System) has been introduced to detect and prevent unauthorized intrusions and enhance endpoint (desktop computers, laptop computers, tablets, smartphones, etc.) security within the organization. It is essential to strengthening your protection with the fact that attackers are commercializing for business purposes. Let’s make it difficult to be attacked by creating a security environment that takes time to break-in.

Access Control

This question is at least as old as the ability to work with multiple users on the same system. Most of the operating systems and other critical applications have started to tie users to basic user access level and no longer automatically make users as administrators. Administrator or root rights ultimately mean “full access”.

access control- types of computer security
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If malware gets onto a system, in most cases it acts first with the rights of the registered user. If the user has full control, then the malware also has it. It would first deactivate malware protection and then anchor itself in the system in such a way that it has full access at all times.

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By implementing effective Access Control policy for users, security breaches and human errors can be controlled to a greater extent.


By installing a firewall at the entrance/exit (port) of the network, you can control the communication such as permitted and denied connection based on the set rules. Such control is called packet filtering. The description of this rule is called an ACL (Access Control List).

Courtesy: How Stuff Works

By setting a firewall, it is possible to deny or allow network connections by specified sites or software. Therefore, by installing a firewall, you can prevent communication that is not based on rules. This not only means avoiding cyber attacks but also means preventing users of the organization from communicating in violation of the organization’s network usage policy.

For example, P2P file sharing from inside the company can be restricted even if you allow browsing on the Web. Of course, cyber-attacks that use permitted communication rules cannot be prevented such as IP Spoofing in which an attacker modifies the source address in the packet header that seems legitimate source to the receiving device and the receiver accept it.

It is not possible to deal with security threats only with a firewall, so it is recommended to use it in combination with other methods such as IDS/IPS or WAF (Web Application firewall). This will further enhance the security of your computer and make your data safer.

Proper Disposal of Devices

If an electronic device is no longer required, then it makes sense to disconnect it and then dispose of it properly. There are trade-in and take-back programs offered by service providers where you can exchange your old cellphone with a new one or they simply take it back at a lower price. Similarly, there are fundraising campaigns where the old cellphones, hard drives, USB, and other electronic devices are recycled for a good cause.

These devices should never end up in regular household waste but should be thrown into particular electronic waste bins. These can be found, for example, at the local recycling centre or in electronics stores.

In addition to the environmental aspects, many users forget that valuable and personal information may still be stored on the devices! If you pass on the smartphone within the family, for example, to the children, it is often sufficient to reset the device to the factory settings. But when the devices, that store private and corporate data and information are traded or recycled then the best practice is to use special tools to delete the data or otherwise make it unusable. Strong industrial magnets from electronics retailers can destroy magnetically stored information. The most effective method is still good old sledgehammer.


Passwords are a security topic that cannot be ignored. Passwords that are easy to guess, reused, or generally too weak and too short, make it easy for cyber-criminals to steal data or manipulate systems. It’s never too late to implement a complex password strategy to avoid using the same password on more than one device. Likewise, avoid using the same password on multiple applications and emails accounts.

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Programs offer the creation of unique and long passwords, save them encrypted locally and via a secure connection in the cloud. Nowadays, password managers can do this reliably, and quite securely. In this way, users can also synchronize the access data between PC / laptop and smartphone using appropriate apps. Although this is not always free of charge, it should be worth the manageable investment.

Besides, more and more online services are offering so-called multi-factor authentication (2FA) or “two-step verification”. The idea behind the principle is that in addition to the user name and password, a second password or a code that is unique for this process is required. These are generated using individual apps such as Google or Microsoft Authenticator.

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The significant advantage of this is that criminals, even though, have the right Password in their hands, cannot get into the email, social media, or bank accounts unless they also have the victim’s smartphone.

You can also check whether your email address has already become part of data theft through the website such as “Have I have been pwned”. In addition to this, always change the Password for the WLAN and router access from the default values of the providers.


Even if we didn’t know about today’s challenges and technical developments during the initial days of computer technology, it was still recognized that computer security is crucial – for workplaces as well as home users. The negligence of the basic security measures has made the billion-dollar “cybercrime” market possible in the first place and continues to favour it.

However, as software developers and users, we can make criminals’ lives difficult and less lucrative because criminals also act according to market principles. The higher the effort, the lower the yield, and the more uneconomical the business. In addition to cybercrime, the “physical” security of data and systems is also crucial. It also depends on the responsibility of the users. Computer security must prevent vulnerabilities and ensure compliance.

Computer security is always threatened if there is a vulnerability that an attacker can exploit. IT management should, therefore, identify and close weaknesses or security gaps. Nevertheless, computer security policy must be designed to be as comprehensive as possible to mitigate the risks and provide strict protection requirements for information and systems. Computer users, at home or in the office, who have already taken enough security measures just need to keep themselves updated with security advancements, and keep their hardware and software updated with the latest versions and security patches.

Business owners who are looking forward to growing their company, need to consider the types of computer security they need to implement. As the data and information is an asset and like any corporate asset, an organization information asset has a financial value that requires security. It is highly recommended to invest in the computer security of your company, in the same way as you invest in other sectors, for your company’s growth as weak computer security with loopholes can bring the business down quickly.

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