Session 3 : Network Security Flashcards
Network Security?
Protecting computer networks from unauthorized access.
Key principles of Network Security?
CIA
* Confidentiality : ensures that data is accessible only to authorized users
* Integrity : Prevents unauthorized modification of data.
* Availability : ensures network resources are accessible when needed.
Networl Security Threats?
Risks that can compromise the
confidentiality,
integrity,
and availability
of data and network resources.
Common network security threats?
- Malware
- Phishing
- Ransomware
- Insider threats
- Social engineering
- Zero-day attack
- DDOS
- MITM
Malware?
Harmful software designed to damage, steal or distrupt data and system.
EX :
* Viruses
* Worms
* Trojan
* Ransomware
Phishing attacks?
A social engineering attack where attackers trick users into reveal sensitive infomation.
- Send fake emails, messages that appear legitimate
- Users unknowingly provide personal or financial data
tr
DOS & DDOS?
Flood a network or server with excessive traffic, making it slow or unavailable.
- DOS : One attacker targets a system
- DDOS : Multiple compromised devices attack a system
MITM?
A cybercriminal secretly intercepts and alters communication between two parties.
SQL Injection?
Attackers insert malicious SQL queries into web forms to manipulate databases.
- Can expose, modify, or delete sensitive data.
- Often targets websites with weak input validation.
Password attacks?
Methods used to crack or steal passwords.
Types:
* Brute Force : Trying many password combinations until it is unlock.
* Dictionary : Using common words and phrases.
* Credential Stuffing : Using leaked passwords from other breaches
How to prevent Network Security Threats?
- Install firewalls and intrusion detection systems.
- Use strong, unique passwords and enable MFA.
- Regularly update and patch software
- Educate employee and users about cybersecurity risks.
- Use encryption to protect sensitive data.
- Implement access control and least privilege principles.
Basic security controls for networks?
- Internet Security
- Firewall
* A security system that monitors and controls incoming and outgoing network traffic. - IDS/IPS
* IDS : Intrusion Detection System
Monotors network traffic for suspicious activities and alerts security teams.
* IPS : Intrusion Prevention System
Detects and actively blocks malicous activities in real time - VPN
* Encrypts internet connection to protect data and maintain privacy. Allow users to securly access a private network over a public internet connection.
Emerging trends in network security?
- The role of AI and Machine Learning in Threat detection
- Growing importance of Zero-Trust Network architecture
- Cloud-based network security challenges and solutions
- Preparing for future cybersecurity threats
