Types and Sources of Cyber Security Threats [2026]

Cybersecurity threats continue to grow in frequency, volume, and ingenuity, making the need for robust cybersecurity systems all the more important. However, one cannot effectively protect their sensitive data from cyber security threats unless one knows its types and how they are carried out.

 

Different Types of Cyber Security Threats [2026]

There are various types of cyber security threats:

1. Malware Attack

These attacks use techniques to install the malware in a device by clicking on a link or opening an attachment. Malware can also be installed in a device exploiting its vulnerabilities without letting the owner know.

Once installed, malware can monitor the device’s activities, share confidential data and install other threats. Some common types of malware are-

1.1. Trojan virus, which tricks someone into thinking that it’s a harmless file

1.2. Ransomware prevents user’s access to data and threatens to publish it unless a ransom is paid

1.3. Worms that exploit vulnerabilities to gain access to operating systems

1.4. Spyware which gives malicious users unauthorized access to a host of sensitive and confidential data

 

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2. Social Engineering Attacks

These attacks psychologically induce a person to take desirable actions against the attacker, like divulging sensitive information. Types of social engineering attacks are:

2.1. Phishing, wherein attackers send fraudulent information through seemingly genuine sources to trick people into sharing sensitive data. The correspondence may induce people to click links or browse malicious websites sharing a user’s sensitive data.

2.2. Spear phishing, wherein specific senior executives with higher security access are targeted.

2.3. Malvertising is when hackers show malicious codes on online advertisements that infect operating systems when clicked on or viewed simply.

2.4. Vishing, wherein voice is used to manipulate users to divulge important data.

 

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3. Software Attacks

This is a cyber attack aimed at an organization to exploit vulnerabilities in its trusted software update and supply chain. The supply chain refers to the network of resources, individuals, technologies, activities, and organizations that are involved in the production and distribution of a product.

In particular, these types of attacks target companies’ trust in their third-party vendors, especially in software updates that protect them from cyber-attacks. Types of cyber supply chain software attacks are-

3.1. Attack on software development tools and infrastructure

3.2. Attack on tools and accounts used by third-party vendors to protect an organization’s cloud

3.3. Malicious code used on developmental apps and more

 

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4. Advanced Persistent Threats

When unauthorized network access by an individual or a group goes unnoticed for an extended period, it can lead to data extraction, as attackers deliberately evade detection by the organization’s security personnel. These attacks are highly dangerous as the malware stays undetected for prolonged periods.

Advanced Persistent Threats (APTs) are carried out by highly skilled attackers with significant resources, thus making them more commonly used against high-value targets such as large corporations and nation-states. Some ways to identify an APT are:

4.1. Creation of new accounts

4.2. Abnormal activity in the systems

4.3. Trojan horse malware

4.4. A sudden increase in database actions

4.5. Presence of unusual data files

 

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5. Password Attacks

A hacker can gain access to a user’s password by social engineering (inducing him to divulge it), guessing, or gaining access to the database that contains it. Types of password attacks are:

5.1. Brute-force guessing- the hacker continuously guesses the password till he gets it right

5.2. Dictionary attack- common passwords are used to try to gain access to an operating system

5.3. Golden ticket attack- hacker uses a stolen password hash

 

Sources of Cyber Security Threats

Now that we have discussed different types of cybersecurity threats let’s look at the possible sources of these threats.

 

1. Nation States

Hostile nation-states can interfere with another’s country’s organizations to disrupt communication, cause disorder, and inflict damage.

 

2. Terrorist Organizations

Terrorists can launch cyber attacks to gain sensitive data critical to a country’s security systems, rein havoc, disrupt economies, and so much more.

 

3. Criminals

Hackers try to get into systems, most often for financial gain. They use attacks like phishing and installing malware for extortion, theft, and more. They can also install malware and prevent your access to the operating system unless a fee is paid.

 

4. Malicious Insiders

People in your organization having malicious intent can also launch deliberate cyber-attacks. These attackers usually stay hidden and are all the more harmful as they know your organization inside out, your vulnerabilities, the loopholes in the security system, and how to gain access without causing alarm.

 

Conclusion

Cyber security threats have grown in ingenuity, making complete cloud protection tough. However, understanding the main types of cyber security threats and actors who may launch them for their gain can help organizations better prepare themselves for protection. Our guide, as mentioned above, aimed to help even a layman thoroughly understand the types of cyber security threats, the damage they can cause, and which malicious attackers they must be on guard against.