cyber security short course - Understanding the most common cyber attack methods

Byte-Sized: Cyber Security Fundamentals : Part 4 Understanding the most common cyber attack methods is essential for anyone who uses a computer, a smartphone, or even a smart device at home. In today’s hyper-connected world, cyber criminals are constantly developing new ways to exploit weaknesses, but the foundations of most attacks still fall into a handful of well-known categories. By learning how these attacks work, why they are effective, and what signs to look for, individuals and businesses in the UK can dramatically reduce their chances of becoming victims. This video breaks down the most common cyber attack types in a clear and practical way so you can recognise the warning signs and protect yourself long before an attacker gets in. One of the most widespread threats is phishing. This is a fraudulent attempt to trick a person into giving away sensitive information such as passwords, banking details, or login credentials. Phishing normally arrives through email, but it can also appear in text messages, social media, messaging apps, or even phone calls. What makes this common cyber attack so dangerous is its simplicity. Criminals create messages that look completely legitimate, often copying the branding of well-known companies such as banks, delivery services, government departments, or online retailers. The goal is to make the message appear urgent so the victim doesn’t stop to think before clicking. Once someone clicks a malicious link, they may be taken to a fake login page designed to steal their details, or they might unknowingly download malware. Phishing continues to succeed because it targets human behaviour, and no technology can fully prevent people from being deceived. Another major category of common cyber attack is malware. Malware is any type of malicious software designed to damage, disrupt, spy on, or take control of a device or network. It includes well-known threats such as viruses, ransomware, trojans, and spyware. Each variant behaves differently, but they typically enter a system through suspicious downloads, compromised websites, infected USB drives, or unsafe email attachments. In recent years, ransomware has become particularly destructive. It encrypts all files on a device and demands a payment, usually in cryptocurrency, before the attacker claims they will restore access. Many organisations across the UK have been brought to a standstill because of ransomware attacks, proving that even well-resourced companies are vulnerable. Malware is one of the most damaging forms of cyber attack because it can silently spread across systems and networks before anyone realises what has happened. A further common cyber attack type is the Distributed Denial of Service attack, often known as a DDoS. Unlike phishing or malware, which aim to steal data, this kind of attack focuses on disruption. A DDoS attack works by overwhelming a website, server, or network with so much traffic that it can no longer operate normally. Legitimate users are unable to access the service, and in severe cases the entire system can crash. Cyber criminals achieve this by using thousands or even millions of controlled devices, known as botnets, which flood a target with requests all at once. DDoS attacks are frequently used against online retailers, gaming platforms, government portals, and any organisation that relies on continuous uptime. For businesses, even a short outage can mean lost revenue, reputational damage, and expensive recovery efforts. Man-in-the-Middle attacks, often abbreviated to MitM, are another method used by attackers to intercept communication between two parties. In a typical scenario, a victim believes they are communicating directly with a website, a service, or another person, but an attacker has secretly placed themselves in the middle. This allows the criminal to read, capture, or even alter information without the user being aware. These attacks often occur on unsecured public Wi-Fi networks, which is why experts consistently warn people to avoid accessing sensitive accounts when connected to free Wi-Fi hotspots. A MitM attack is especially dangerous because it can allow attackers to steal login details, intercept banking sessions, or monitor private messages in real time. The final common cyber attack explained in this video is SQL injection. This attack targets websites that use poorly protected databases. When a form or input box does not properly validate what a user types into it, an attacker can insert malicious SQL commands that the database then executes. This can allow the attacker to retrieve confidential information, modify data, or even gain full control of the website’s backend systems. SQL injection remains one of the most serious vulnerabilities in web applications, and countless breaches in the UK and worldwide have been traced back to insecure database handling. #cybersecurityshortcourse #cybersecurity #cyberawareness