10 Cybersecurity Threats Every Organization Should Know

Introduction

Most attacks do not start with malware. They mostly start with access. Attackers find new ways to steal credentials, which they then use to gain unauthorized access. They also use legitimate tools to gain access to systems without triggering alerts. To repeat their actions across environments, they make use of automation.

Modern attacks, such as phishing, ransomware, zero-day exploits, and insider threats, target both systems and users. These threats often work together, increasing the overall impact on organizations.

Better visibility and security depend on how well these threats are identified.

Below are the most common cybersecurity threats that organizations and individuals continue to face today.

Phishing

Phishing is a type of cyberattack used to gather sensitive information, such as login credentials, credit card numbers, bank account numbers, or other financial information. This attack tricks the victim into believing the email is from a legitimate source, such as a bank request or an internal communication, leading them to click on malicious links or download attachments.

In 1994-1995, AOL was the leading internet service provider (ISP), with millions of users. In mid-1994, a hacker called “DA Chronic” developed a Windows application named “AOHell” and integrated the first-ever phishing toolkit, “CC/PW Fisher,” which exploited AOL’s direct messaging system. The hacker obtained personal credentials by sending direct messages to non-technical users. This is considered one of the earliest phishing attacks.

Phishing usually follows these steps:

Ransomware

Ransomware is a type of malware that hijacks the victim’s network or data and demands a ransom to regain access.

History

The first ransomware attack occurred in 1989, known as “AIDS Trojan.” This attack was initiated by Joseph Popp, Ph.D., an AIDS researcher, who distributed 20,000 floppy disks to AIDS researchers spanning more than 90 countries, claiming that the drives contained a program that analyzed an individual’s risk of acquiring AIDS through the use of a questionnaire. However, the disk also contained malware that would remain inactive on a computer until it was powered on 90 times. After the 90-reboot threshold was reached, the malware displayed a message demanding a payment of $189 and another $378 for a software lease.

Ransomware Removal

If a system is infected with ransomware, these are the essential steps that can be taken:

• Boot the system in safe mode.
• Use endpoint detection and response (EDR/XDR) tools.
• Scan your system for ransomware.
• Restore from a clean, offline backup.

Prevention

Deploy modern endpoint protection with behavioral detection to prevent ransomware.

• Keep your operating system patched and updated regularly to ensure you have fewer vulnerabilities to exploit.
• Don’t install software or give it administrative privileges unless you are fully aware of what it is and what it does.

Brute Force Attacks

It is a technique used to guess passwords or access protected systems by attempting multiple password combinations or using credential lists. Basically, in a brute-force password attack, the attacker does not exploit any vulnerabilities in the web application; they attempt all possible combinations of the victim's password and username to gain unauthorized access to the victim's account. The attacker tries every possible password combination (i.e., lowercase letters, uppercase letters, numbers, and special characters) until a solution is found.

An attacker tries to guess one of three things using brute force:

• A user or an administrator password
• A password hash
• An encryption key

GitHub is the platform that faced the most significant brute-force attack in 2013. During this attack, researchers identified brute-force login attempts from approximately 40,000 unique IP addresses. The source of the credential list remains unknown.

The e-commerce platform Taobao was hit by a massive brute-force attack in February 2016. Attackers used 99 million credentials to brute-force existing Taobao accounts. One in five attempts was successful.

Prevention

• Use multi-factor authentication (MFA)
• If anyone tries to log in with the wrong credentials more than five times, then the account should be temporarily locked.

Malware

Malware refers to software designed to damage, disrupt, or gain unauthorized access. Malware is often delivered via email as a link or attachment, and it executes when a user interacts with it.

The following are the different types of malware:

• Virus
• Worms
• Trojans
• Ransomware
• Spyware
• Adware

History

In 1971, Creeper was an experimental program designed by Bob Thomas to test how a program might move between computers. Creeper gained access via ARPANET and copied itself to the remote system, where it displayed the message: “I am Creeper, catch me if you can”.

In 2005, Koobface was one of the first malware families to infect PCs and then spread to social networking sites. By rearranging the letters in “Koobface,” you get “Facebook.” This virus also targeted other social networks like MySpace and Twitter.

In 1986, malware authors disguised one of the earliest Trojans as a popular shareware program called “PC-Writer.” Once inside a system, it deletes user files.

In 2010, when the Stuxnet Worm was released, security analysts openly speculated that this malicious code was designed with the express purpose of attacking Iran’s nuclear program and included the ability to affect both hardware and software. This sophisticated worm is believed to be the work of an entire team of developers, making it one of the most resource-intensive bits of malware created to date.

Prevention

• Deploy endpoint protection platforms across endpoints and update regularly.
• Keep your operating system updated and your network secure.
• Avoid unsecured public Wi-Fi networks.

Distributed Denial of Service (DDoS)

DDoS is an attack in which an attacker sends multiple requests from multiple sources to flood the targeted system's bandwidth or resources. The main goal of this attack is to make its services unavailable.

DDoS attacks target critical online services, such as banks and news websites, and disrupt service availability and access.

For businesses like e-commerce, for whom availability is a primary requirement, a successful DDoS attack can result in significant financial loss.

History

On 22 July 1999, the first DDoS attack occurred. In this attack, a computer at the University of Minnesota suddenly came under attack from a network of 114 other computers infected with a malicious script called Trin00.

The code caused the infected computers to send redundant data packets to the university, overwhelming its network and preventing it from handling legitimate requests. In this way, the attack knocked out the university’s computers for two days. These systems were flooded with malicious traffic, preventing legitimate access, and in each case, the malicious packets originated from a network of infected computers.

Prevention

• Secure your network infrastructure.
• Create a Denial-of-Service Response plan.
• Understand the warning signs.

Man-in-the-Middle (MitM) Attack

A man-in-the-middle attack is when an attacker intercepts communication between two parties, impersonates both sides, and gains access to the exchanged data.

This attack allows an attacker to intercept, send, and receive data intended for someone else, without either party knowing until it is too late.

The aim of this attack is to steal personal information, such as login credentials, credit card numbers, and account details. The main targets are users of financial applications, SaaS applications, e-commerce sites, and other websites that require a login.

History

In 2015, a cybercriminal group in Belgium stole a total of $6 million by hacking through man-in-the-middle attacks on large European companies. Hackers gained access to corporate email accounts and used them to solicit money from clients.

According to Europol’s official press report, the group's modus operandi involved the use of malware and social engineering techniques. Once they gained access, they carefully monitored communications to detect and control payment requests. MitM attacks typically involve two phases: interception and decryption.

The first step intercepts user traffic through the attacker’s network before it reaches its intended destination. Interception can be achieved through techniques such as IP, ARP, and DNS spoofing. After an interception, any two-way SSL traffic must be decrypted without alerting the user or the application. This can be achieved using techniques such as HTTPS spoofing, SSL hijacking, and downgrade attacks.

SQL Injection

SQL injection is a web application attack in which malicious SQL queries are injected into input fields to manipulate a database. It is a web security vulnerability that allows an attacker to interfere with database queries. SQL injection allows an attacker to view, modify, or delete the data.

According to IBM, SQL injection accounted for 40% of initial access in North America and 36% in Europe during the 2024-2025 period. One of the most dangerous SQL attacks occurred when hackers targeted Heartland Payment Systems, gaining access to 100 million cards and causing $300 million in losses.

SQL injection remains a critical risk and is included in the OWASP Top 10.

Prevention

• Avoid dynamic SQL and use parameterized queries
• Patch known vulnerabilities regularly
• Use secure coding practices and input validation

Zero-Day Attack

A Zero-day attack occurs when the attackers exploit unknown vulnerabilities. Developers cannot immediately patch unknown vulnerabilities. Patches are released after a vulnerability is discovered to fix the issue.

In late 2014, Sony Pictures was also a victim of a zero-day exploit. The hacker group, which named itself ‘Guardian of Peace’, attacked Sony’s network using malware.

The attack crippled Sony’s entire system and led to the release of sensitive information. The compromised data includes details of business plans, personal emails of senior Sony executives, and even copies of upcoming movies.

In March 2018, zero-day exploits were found in PDFs. They contained two zero-day vulnerabilities (CVE-2018-4990 and CVE-2018-8120) targeting Adobe Acrobat. CVE-2018-4990 was an out-of-bounds read vulnerability in Acrobat Reader, and the latter was used to bypass Acrobat Reader’s sandbox.

Outdated and Unpatched Systems

Unpatched software means there are bugs in a program that a company is aware of and has not yet fixed. Users can also be responsible for unpatched software.

According to one study, nearly 60% of organizations that suffered a data breach within the last two years had cited known vulnerabilities that had not yet been patched as a reason.

Updating your software in the traditional way is expensive and complicated. To overcome these operational difficulties, organizations are moving critical software functions to the cloud.

Outdated software is software that is no longer supported by the vendor. It means that newly discovered bugs aren’t addressed, and out-of-date software is less likely to work on new hardware and remain compatible with modern operating systems.

All software contains vulnerabilities. When a program is released, software companies work to develop fixes or patches for the vulnerabilities it introduces.

Insider Threats

An insider threat to an organization comes from people within it, such as employees, interns, third-party staff, contractors, or business partners, who understand internal systems. While organizations often focus on external threats, insiders can also pose a significant threat.

According to the Verizon Data Breach Investigations Report 2024, 19% to 20% of data breaches involve internal actors. This covers both malicious insider activity and human error.

We can protect the company from insider threats by using multi-factor authentication, investigating unusual activities, restricting access based on security policies and roles, establishing physical security in the work environment, and implementing strict password and account management policies and practices.

Conclusion

Cybersecurity threats are not isolated. One issue can lead to another. Phishing can expose credentials, which are then used to access systems or move data. In some cases, they are also used to deploy ransomware.

To prevent these threats, organizations require more than basic security tools. They need visibility across endpoints, users, and networks. It's important to detect and respond to the threat before damage occurs. SafeAeon supports this through continuous endpoint monitoring and proactive threat detection to identify and respond to threats early.