Principles of Cyber Security

Threat actors prioritize targeting networks to exploit vulnerabilities, leading to various attacks such as interception, DNS attacks, and MITM attacks. MITM attacks involve eavesdropping on communications or impersonating parties, with techniques like session replay to steal credentials. Implementing robust network security measures is crucial in safeguarding against these threats.

• Network security
• Cyber attacks
• MITM
• Vulnerabilities
• Session replay

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1. Principles of Cyber Security Lecture Lecture 12 12: : Traditional Traditional Ciphers_VI Ciphers_VI Dr. Dr. Muamer Muamer Mohammed Mohammed 1

2. Objectives 12.1 Describe the different types of networking-based attacks.

3. Attacks on Networks Threat actors place a high priority on targeting networks in their attacks Exploiting a single network vulnerability can expose hundreds or thousands of devices Attacks that target a network or a process that relies on a network include: Interception attacks Layer 2 attacks DNS attacks Distributed denial of service attacks Malicious codding and scripting attacks 3

4. Attacks on Networks Man-in-the-Middle (MITM) In an MITM, a threat actor is positioned in a communication between two parties The goal of an MITM attack is to eavesdrop on the conversation or impersonate one of the parties A typical MITM attack has two phases: The first phase is intercepting the traffic The second phase is to decrypt the transmissions 4

5. Attacks on Networks Man-in-the-Middle (MITM). 5

6. Attacks on Networks Man-in-the-Middle (MITM) Session Replay A replay attack makes a copy of a legitimate transmission before sending it to the recipient Attacker uses the copy at a later time Example: capturing logon credentials Threat actors use several techniques for stealing an active session ID: Network attacks (hijacks and altered communication between two users) Endpoint attacks (cross-site scripting, Trojans, and malicious JavaScript coding) 6

7. Thank you 7