Computer Virus A hidden program that sticks to a real file or app. When you open that file, the hidden program wakes up and can spread to other files. Worm A secret helper that moves from device to device on its own. It looks for weak spots in a network and copies itself without you having to open anything. Trojan Horse A fake program that looks useful or fun. Once you install it, it lets others into your device to take information or add more bad software. Ransomware A program that locks up your files or device and won’t give them back until you pay money. Spyware A hidden watcher that records what you do on your device—like which websites you visit—and sends that information to someone else. Adware A program that shows you ads you didn’t ask for. It often follows what you do online to pick ads it thinks you might click. Rootkit A secret tool that buries itself deep in your device so you can’t see it. It lets someone control your device without you knowing. Botnet A group of devices secretly taken over by the same bad actor. The bad actor can make them all do things at once, like overload a website or send spam. Logic Bomb A hidden timer or trigger inside a program that waits for a certain date or action, then suddenly does something harmful—like erasing files. Fileless Malware A hidden attacker that lives only in your device’s memory. It doesn’t leave files behind, so it’s harder to spot and remove. Explain these viruses in a simple word.

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Computer malware comes in many different forms, each designed to attack your devices and data in unique ways. Today we'll explore the main types of malware and learn to understand how they work using simple, easy-to-remember terms. Welcome! Today we'll explore computer viruses and malware. These are harmful programs that can damage your device or steal your personal information. Let's learn about different types of malware and how to recognize them. Let's start with three common types. A computer virus is a spreader that hides in files and spreads when you open them. A worm is a traveler that moves between devices automatically through networks. A trojan horse is a disguise that looks helpful but actually hides malicious code inside. Next, we have ransomware and spyware. Ransomware is a locker that encrypts your files and demands payment to unlock them. Never pay the ransom! Instead, backup your files regularly. Spyware is a hidden watcher that secretly records your activities and sends the information to cybercriminals. Now let's look at more advanced types. Adware is an ad shower that bombards you with unwanted advertisements. Rootkit is a deep hider that buries itself in your system's core, making it very hard to detect. Botnet creates a zombie army by controlling many infected devices simultaneously. To protect yourself from malware, remember these key tips: keep your software updated, use antivirus protection, avoid suspicious links, backup your files regularly, and be cautious with email attachments. Stay vigilant and your devices will stay safe! Next, we have ransomware and spyware. Ransomware is a locker that encrypts your files and demands payment to unlock them. Never pay the ransom! Instead, backup your files regularly. Spyware is a hidden watcher that secretly records your activities and sends the information to cybercriminals. Now let's explore more advanced malware types. Adware is an ad pusher that bombards you with unwanted advertisements. Rootkit is a deep hider that buries itself in your system's core, making it very hard to detect. Botnet creates a controlled group by taking over many infected devices simultaneously. Logic bomb is a timed trigger that waits for a specific date or event before activating its harmful payload. To summarize what we've learned: Computer malware comes in many forms including viruses, worms, and trojans. Each type has unique attack methods that we can remember with simple names. Ransomware locks your files while spyware watches you secretly. Advanced types include deep-hiding rootkits and device-controlling botnets. Stay protected by keeping software updated, backing up files, and being cautious online.