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Introduction: An overview of the NICE Cybersecurity Workforce Framework In 2017, the National Institute of Standards and Technology (NIST) published Special Publication 800-181, the NICE Cybersecurity Workforce Framework (or NICE Framework); the document categorizes and describes cybersecurity work as well as the knowledge, skills and abilities (KSAs) needed by professionals to complete tasks in the […]
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Introduction While penetration testing and Red Teaming are crucial to check a system’s security and to validate potential entry-points in the infrastructure, sometimes establishing an initial foothold on the target can be a big challenge due to host IDS agents, host firewalls, antivirus or even due to bypass security appliances that are inspecting internal network […]
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Introduction In modern networks, security is not an afterthought. You need to know how to build secure networks from the outset. Security has to be woven into the very fabric of the network. The 200-301 CCNA exam covers security fundamentals among a broad range of networking topics. This article describes what you need to know […]
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Introduction to dark web phishing kits The internet is like an iceberg: there is a lot more to it than can be seen from the surface. In addition to the surface web (what can be accessed and indexed by search engines), there is the deep web (gated content on internet-connected computers) and the darknet or […]
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Introduction The CCNP, or Cisco Certified Network Professional, is a certification endorsing IT professionals who have the knowhow and skill to set up, configure and manage local and wide-area networks within an enterprise. CCNP certification takes you through video, voice, wireless and advanced security issues. Since the training module and examinations for the CCNP certification […]
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What percentage of the exam focuses on network fundamentals? The network fundamentals section is 20% of the CCNA 200-301’s topics. It’s neither the largest nor the smallest. The fact that the percentage increased from 15% in the previous version indicates that Cisco has emphasized the importance of having a strong base in this topic, on […]
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Introduction The CCNA (Cisco Certified Network Associate) is one of the most well-known entry-level certifications within the IT industry. Holding this credential proves your ability to install, configure, manage and support small- to medium-sized networks. A study by CompTIA found that 47% of SMBs see the IT skills gap growing. This IT skills gap is […]
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Introduction To understand Network Security, it’s imperative that we understand networking fundamentals and networking basics. In this post, we will be learning about networking basics and fundamentals to get started with Network Security. We cannot cover whole networking in a single post so we will be focusing only on core networking concepts needed for network […]
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Introduction This article provides an overview of how printing functions work and how format strings are used to format the data being printed. Developers often use print functions for a variety of reasons such as displaying data to the users and printing debug messages. While these print functions appear to be innocent, they can cause […]
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Introduction In the previous article, we understood how print functions like printf work. This article provides further definition of Format String vulnerabilities. We will begin by discussing how Format Strings can be used in an unusual way, which is a starting point to understanding Format String exploits. Next, we will understand what kind of mistakes […]
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Introduction In the previous articles, we discussed printing functions, format strings and format string vulnerabilities. This article provides an overview of how Format String vulnerabilities can be exploited. In this article, we will begin by solving a simple challenge to leak a secret from memory. In the next article, we will discuss another example, where […]
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Copy-paste compromises: Introduction and overview Although the concept of copy-paste compromises is not exactly new, there are now several different forms of the attack. In the version of copy-paste compromise that we’ll discuss today, malicious actors use open-source or publicly available exploit code, web shells and other tools to gain information. Recently, Australia has revealed […]
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Introduction to Lockphish Phishing attacks are a common tactic for gaining initial access to a system. If an attacker can convince their target to hand over their login credentials or install and execute malware on their machine, this provides an attacker with a foothold that can be used to expand their access and achieve their […]
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Fuzzing is a black-box software testing technique and consists of finding implementation flaws and bugs by using malformed/semi-malformed payloads via automation. Fuzzing an application is not a matter of simply exploiting a specific point of an application, but also acquiring knowledge and potential crashes that could be explored in-depth through the implementation of crafted payloads […]
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Introduction: In the previous article of this series, we discussed how format string vulnerabilities can be exploited. This article provides a case study of how format string vulnerabilities can be used to exploit serious vulnerabilities such as Buffer Overflows. We will begin by understanding what stack canaries are and then we will exploit a Buffer […]
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Introduction: This article provides an overview of various techniques that can be used to mitigate Format String vulnerabilities. In addition to the mitigations that are offered by the compilers & operating systems, we will also discuss preventive measures that can be used while writing programs in languages susceptible to Format String vulnerabilities. Techniques to prevent […]
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Introduction: IoT Manufacturers Favor Convenience over Security Because IoT security is still an afterthought, cybercriminals in general consider smart devices a “low-hanging fruit” – a target easy to compromise and manipulate. Security (and privacy) by design is key for IoT, and probably the only effective way for a smart gadget to protect its communications is […]
The post IoT Security Fundamentals: Intercepting and Manipulating Wireless Communications appeared first on Infosec Resources.
How public-key cryptography works Public-key or asymmetric cryptography is one of the two main types of encryption algorithms. Its names come from the fact that it uses two different encryption keys: a public one and a private one. Public and private keys The private key used in public-key cryptography is a random number with certain […]
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Introduction to hash functions Hash functions are one of the most extensively-used cryptographic algorithms in blockchain technology. They are cryptographic (but not encryption) algorithms that are designed to protect data integrity. In a nutshell, a hash algorithm is a mathematical function that transforms any input into a fixed size output. To be cryptographically secure — […]
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