Class 12 Computer Science — Chapter 12: Security Aspects

What you'll learn

• ▸Introduction to Network Security Threats
• ▸Understanding Malware
• ▸Computer Viruses
• ▸Computer Worms
• ▸Ransomware
• ▸Trojan Horse
• ▸Spyware, Adware, and Keyloggers
• ▸Malware Distribution Methods
• ▸Combating Malware: Signs and Prevention
• ▸Online Virtual Keyboard Security

Chapter Summary

--- PAGE 1 --- Chapter 12 Security Aspects "Treat your password like your toothbrush. Don't let anybody else use it, and get a new one every six months." — Clifford Stoll In this Chapter » Threats and Prevention » Malware » Antivirus » Spam » HTTP vs HTTPS » Firewall » Cookies » Hackers and Crackers » Network Security Threats 12.1 THREATS AND PREVENTION Being alone is the most ideal situation for an individual in terms of security. It applies to computers as well. A computer with no link to an external device or computer is free from the security threats arising otherwise. However, it is not an ideal solution for a human being or a computer to stay aloof in order to mitigate any security threats, as the world at present is on its way to become fully connected. This connectedness of various devices and computers has brought into our focus the various network threats and its prevention. Network security is concerned with…

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

1. Explain how firewalls protect computers. Get Solution →
2. Give examples of secure online habits. Get Solution →
3. Identify different kinds of malware. Get Solution →
4. What is the short term used for MALicious softWARE, as mentioned in the text? Get Solution →
5. Who coined the term 'computer virus' in 1985, according to the chapter? Get Solution →
6. Which type of malware demands a ransom payment after blocking a user from accessing their own data? Get Solution →
7. A malware that looks like a legitimate software but performs malicious activities after installation is known as a what? Get Solution →
8. What is the main purpose of a keylogger? Get Solution →

Did you know?

• 💡 The first computer virus, "Creeper," appeared on ARPANET in 1971.
• 💡 The famous "Trojan horse" malware is named after an ancient Greek war strategy.
• 💡 Some powerful computer viruses can spread globally in just a few hours.
• 💡 A "keylogger" can secretly record every single button you press on your keyboard.
• 💡 Early antivirus software appeared in the 1980s to fight growing digital threats.

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