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Software Security Development – A White Hat’s Perspective

“If you know the enemy and know yourself, you don’t need to be afraid of the results of hundreds of battles. If you know yourself, but not the enemy, you will also suffer defeat for every victory you achieve. It’s time. Battle of Sun Tzu

Introduction

How to get to know your enemy

Knowing your enemy is necessary to effectively fight it. Security needs to be explored not only by protecting the network, but also by exploiting the vulnerability of software and methods used for malicious purposes. As the tools and methods of computer attacks evolve, we are likely to face serious life-threatening events in the near future. However, we will create a much safer world in which risks are managed to an acceptable level. To do this, we need to build security into our systems from the outset and conduct thorough security testing throughout the lifecycle of the system’s software. One of the most interesting ways to penetrate computer security is to study and analyze it from the point of view of an attacker. A computer hacker or hacker-programmer uses various applications and software tools available to analyze, research and exploit network vulnerabilities and software security vulnerabilities. Mining software is exactly what it looks like, using a bug or a bug and reworking it to make it work in its favor.

Similarly, your sensitive personal information can be very useful to criminals. These attackers may search for sensitive data to use it for identity theft or other fraud, a simple way of laundering money, information useful in their criminal activities, or access to the system for other nefarious purposes. One of the main stories of recent years is the race of organized crime in cyberattacks. They use business processes to make money from computer attacks. This type of crime can be very lucrative for those who can steal and sell credit card numbers, commit identity theft, or even extort money from a target threatened by a DoS flood. In addition, if the attackers carefully cover their tracks, the chances of going to prison for computer crimes are much lower than for many types of physical crimes.

Current security

Evaluating software vulnerabilities is important to improve the current security of your system or application. Any software flaws that may pose a threat should be taken into account when developing such a vulnerability scan. This process should identify weaknesses and help create a framework for further analysis and countermeasures. The security we have today, including firewalls, attack protection software, IP blockers, network scanners, virus protection and scanning, encryption, user profiles, and security keys. It is important to counter attacks on these basic functions of the software and the computer system on which it is placed to strengthen the software and systems.

You may have a job that requires a client-host module, which in many cases is the starting point for hacking the system. Understanding the structure you use, including the core, is also necessary to avoid an attack. Stack overflow is a function called in a program that turns to the stack to obtain important data such as local variables, function arguments, return address, structure order, and compiler used. Once you’ve received this information, you can use it to override the inputs in the stack, which is designed to get a different result. This can be useful for a hacker who wants to get information that gives them access to someone’s account, or for something like the S’L injection into your company’s database. Another way to achieve the same effect without knowing the size of the buffer is called heap overflow, which uses dynamic buffers designed to be used when the size of the data is unknown, and the memory is reserved when the size of the data is unknown. Affected.

We already know quite a lot about intecies (or at least should), and so we’re actually inteent overflow variables prone to overflow, inverting bits to represent a negative value. While this looks good, the whole numbers themselves have changed dramatically, which can benefit an attacker, for example by triggering a denial of service attack.

Vulnerabilities in the format line are actually the result of poor attention to the code on the part of the programmers who write it. If you’re written with a format setting such as “% x,” it returns the sixteenth contents of the stack if the programmer decides to leave settings like “printf (string);” or similar. There are many other testing tools and methods used in testing and developing applications, such as phasing, that can prevent these types of exploits by identifying gaps.

In almost all cases, the use of these software bugs is due to incorrect input of information into the software, so that it does not work as intended or intended. Poor input can lead to many types of data returned and effects in the software logic that can be replicated by learning from input errors. In most cases, this means rewriting the original values in memory, whether it’s processing data or typing code. TCP/IP (transfer control protocol/Internet protocol) and all related protocols are incredibly flexible and can be used for a variety of applications. However, the internal structure of TCP/IP gives attackers many opportunities to undermine the protocol, creating all sorts of problems with our computer systems. By undermining TCP/IP and other ports, attackers can breach the privacy of our sensitive data, alter data to undermine their integrity, impersonate other users and systems, and even destroy our machines through attacks. Many attackers regularly exploit vulnerabilities in traditional TCP/IP to access sensitive systems around the world with malicious intent.

Today, hackers gained insight into operating systems and vulnerabilities in the operating structure itself. Windows, Linux, and UNIX bugs are openly exploited by viruses, worms, or Trojan horse attacks. Once attackers gain access to the target computer, they want to keep that access. To achieve this goal, they use Trojans, backdoors and rootkits.

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