Network & Information Security Threats for SSC CGL Tier 2

Network and information security is an important topic in SSC CGL Tier 2 Computer Awareness. It focuses on protecting data, devices, and networks from unauthorized access or damage. Understanding common threats and preventive measures is crucial for exam preparation.

What is Network Security?

Network security involves policies, practices, and tools used to protect data and systems from cyber attacks, theft, or damage. It ensures confidentiality, integrity, and availability of information.

Common Network and Information Security Threats

In today’s digital world, protecting data and networks from cyber threats is essential. These threats can compromise system security, steal information, or disrupt network operations. The table below highlights the most common network and information security threats important for SSC CGL Tier 2 Computer Awareness:

Threat Type	Description	Impact / Function
Hacking	Unauthorized access to a computer or network.	Hackers can steal data, install malware, or damage systems.
Virus	Malicious program that attaches to files and spreads when shared.	Can delete files, slow down systems, or corrupt data.
Worm	Self-replicating program that spreads automatically across networks.	Consumes network bandwidth and can crash systems.
Trojan	Malicious software disguised as a legitimate program.	Provides unauthorized access to hackers when executed.
Spyware	Secretly monitors user activities and sends data to attackers.	Steals personal or confidential information.
Phishing	Fraudulent attempt to steal sensitive information.	Done via fake emails or websites to capture passwords or financial data.
Denial of Service (DoS) Attack	Overloads a server or network with excessive requests.	Makes websites or services unavailable to users.

Preventive Measures

To protect networks and information, the following measures are commonly used in SSC CGL Exam Tier 2 context:

• Antivirus and Anti-malware Software: Detects and removes viruses, worms, and Trojans.
• Firewalls: Blocks unauthorized access to networks.
• Strong Passwords: Using complex passwords and changing them regularly.
• Regular Updates: Keep software and systems up-to-date to patch vulnerabilities.
• Email and Web Security: Avoid clicking unknown links or downloading attachments from untrusted sources.
• Encryption: Protects data by converting it into unreadable formats for unauthorized users.
• Backup Data: Regular backups prevent loss in case of attacks.
• Network Monitoring: Constant monitoring helps detect unusual activity early.

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Key Takeaways:

Below are the key takeaways:

• Hacking, viruses, worms, and Trojans are frequently asked threats.
• Phishing and DoS attacks are also important.
• Knowing preventive measures is essential for answering scenario-based questions.
• Firewalls, antivirus, encryption, and backups are primary defense mechanisms.
• Awareness of current cyber security practices is useful for SSC CGL Computer Awareness.

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