L-9 Cyber Security/Class-6 Computer

 

Class – VI

Subject : Computer Science

L-9 Cyber Security

 
 A)   Answer the following questions:
1)    What do you mean by cyber security?
Ans: Cybersecurity refers to the practice of protecting computer systems, networks, and data from theft, damage, or unauthorized access. It involves implementing measures to ensure the confidentiality, integrity, and availability of digital information.
 
2)    What do you mean by Malware? Define its types.
Ans: Malware, short for malicious software, is a type of software designed to harm or exploit computer systems. Types of malware include:
 
Viruses: Programs that replicate and spread by attaching to other programs.

Worms: Self-replicating programs that spread independently over networks.

Trojans: Programs that appear legitimate but contain malicious code.

Spyware: Software that secretly gathers information about a user.

Ransomware: Malware that encrypts files and demands a ransom for their release.
 
3)    What are the types of Cyber-attacks.
Ans: Types of cyber-attacks include:
 
Phishing: Deceptive attempts to obtain sensitive information by posing as a trustworthy entity.

Denial-of-Service (DoS) attacks: Overloading a system to make it unavailable to users.

Man-in-the-Middle (MitM) attacks: Intercepting communication between two parties.

SQL Injection: Exploiting vulnerabilities in database query languages.

Cross-Site Scripting (XSS): Injecting malicious scripts into web pages.
 
4)    What are the prevention steps of Cyber-attacks?
Ans: Prevention steps for cyber-attacks include:
 

• Keeping software and systems up-to-date with the latest security patches.
• Using strong, unique passwords and enabling multi-factor authentication.
• Implementing firewalls and antivirus software.
• Educating users about phishing and social engineering tactics.
• Regularly backing up data to prevent loss in case of an attack.

 
B)    State ‘T’ for True or ‘F’ for False:
1)    Malware is the common cyber threats. TRUE
2)    SL injection is not a type of cyber-attacks. FALSE
3)    E-mail attachment could be infected with Malware. TRUE
4)    Trojan is a type of Malware. TRUE

C)    Fill in the blanks:
1)    Malware means malicious software .
2)    Network Security is a practice of  securing  a computer network.
3)    Cyber attack is an example of  a security breach .