denizhalil

web security

Session Hijacking and Ethical Hacking: Detecting and Preventing

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Session Hijacking and Ethical Hacking: Detecting and Preventing Security Vulnerabilities

Introduction Session hijacking is a significant threat in the cybersecurity world, capable of causing substantial damage. Attackers gain unauthorized access to a user’s session by capturing session tokens. This type of attack can lead to identity theft, data breaches, and even financial losses in web applications that handle sensitive information, such as banking and e-commerce platforms. Ethical hackers use various techniques to

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Network Security

What is Cisco?

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What Is CIsco? And Why It Is Important

Introduction Cisco Systems, Inc. is a globally recognized technology giant, primarily known for its cutting-edge networking hardware, telecommunications equipment, and other high-technology services. Established in 1984 by Leonard Bosack and Sandy Lerner, two Stanford University scientists, Cisco began its journey with the development of the first commercially successful multi-protocol router. This innovation revolutionized how computers communicated over a network, laying the foundation for the modern

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Network Security / Python Projects

Network Traffic Monitoring and Analysis with Scapy

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Network Traffic Monitoring and Analysis with Scapy

Introduction In today’s interconnected world, computer networks form the backbone of data transmission across the globe. Within these networks, vast amounts of data are constantly being exchanged. Understanding network traffic is crucial for various applications, including network security, troubleshooting, and monitoring network performance. Scapy, an open-source Python library, provides a powerful toolset for manipulating network protocols. In this article, we will introduce you to the basics of

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Network Security / Programming / Python Projects

ARP Sniffing with Scapy: Analyzing ARP Traffic on the Network

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ARP Sniffing with Scapy Analyzing ARP Traffic on the Network

Introduction Network security and analysis have become more critical than ever in today’s information technology landscape. Network administrators and security experts rely on various tools to effectively monitor and understand the traffic on their networks. In this article, we will explore how to sniff and analyze ARP (Address Resolution Protocol) traffic using Scapy, a Python-based network packet manipulation library. Learning Objectives

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cheat sheet / Network Security

What is Wireshark? Understanding and Analyzing Network Traffic

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What is Wireshark? Understanding and Analyzing Network Traffic

Introduction Network traffic analysis is one of the cornerstones of modern network management and cybersecurity. Wireshark is one of the most popular and effective tools in this domain. As an open-source network protocol analyzer, Wireshark allows users to capture, inspect, and analyze network traffic in real-time. This tool is critical for both network administrators and security professionals, facilitating the deep examination of

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Phishing Attacks

What is Spear Phishing and How Can We Protect Ourselves?

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What Is Spear PhIshIng and How Can We Protect Ourselves?

Introduction: In the realm of cybersecurity, terms like phishing and spear phishing frequently arise. Phishing is a type of cyberattack that generally targets internet users to steal their personal information. However, spear phishing is a more specialized and targeted form of attack. In this article, we will explore what spear phishing is, how it works, and how we can protect ourselves from such

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Network Security / Programming / Python Projects

Network Security Decryption: With Scapy and Cryptography

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Network Security Decryption: Practical Applications with Scapy and Cryptography

Introduction In the digital age, safeguarding sensitive information during transmission across networks is paramount. Encryption is a fundamental technique for ensuring data confidentiality and preventing unauthorized access. However, there are legitimate scenarios where analyzing encrypted network traffic becomes necessary, such as for security monitoring, troubleshooting, or debugging. This article explores two scenarios: one where we possess the encryption key, enabling decryption, and another where the key

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Cyber Security / Red Team

What Is Buffer Overflow Security: Causes and Prevention

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Buffer Overflow Security: Causes and Prevention

Introduction In the ever-evolving landscape of cybersecurity, buffer overflow attacks remain one of the most enduring and dangerous threats. These attacks exploit vulnerabilities in software to overwrite memory locations, potentially leading to arbitrary code execution, system crashes, or unauthorized access. Despite their long history, buffer overflow vulnerabilities continue to be prevalent, primarily due to programming errors and inadequate input validation. This article delves into

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Cryptology

What is PKI (Public Key Infrastructure)?

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What is Public Key Infrastructure PKI The Foundation of Digital Security

Introduction In the digital age, secure communication and data protection have become more critical than ever. Especially with transactions and data exchanges conducted over the internet, there are various risks related to security breaches and data violations. To manage these risks and ensure data security, the Public Key Infrastructure (PKI) system is one of the fundamental pillars of digital security. PKI enhances data

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Cyber Security / IT certificates / Network Security

Cisco Certifications: Roadmap to Enhancing Your Career

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Cisco Certifications: Roadmap to Enhancing Your Career

Introduction In today’s rapidly advancing technology landscape, the demand for network and communication systems experts is on the rise. Professionals looking to build a career in this field can gain a competitive edge and showcase their knowledge and skills by pursuing certifications. Cisco, a globally recognized and trusted brand, offers certifications that provide individuals with the necessary knowledge and competencies

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