Introduction Greetings. Not too long ago, when I was studying at university, I had a term project for the course 'Software Methods of Information Protection.' The assignment required creating a program that embeds a message in GIF format files. I decided to do it in Java. In this article, I will describe some theoretical aspects, as well as how this small program was created. Theoretical Part GIF Format GIF (Graphics Interchange […]
Hello, Habr. I would like to introduce you to a small project on steganography that I created in my free time from studying. I made a project on the covert storage of information in the file system (hereafter FS). This can be applied for stealing confidential information for educational purposes. The experimental sample chosen was the rather old Linux file system ext2. Implementation Considerations for Implementation If one can 'really dig deep' […]
Polish researchers have proposed a new method of network steganography based on the peculiarities of the widely used TCP transport layer protocol. The authors believe that their scheme could be used, for instance, to send hidden messages in totalitarian countries that impose strict internet censorship. Let’s try to understand what the innovation consists of and how useful it really is. First, we need to define […]
The official website of TIOBE, a company specializing in software quality assessment, has released an updated ranking of programming languages for the current month. The TIOBE ranking clearly demonstrates the popularity of modern programming languages and is updated once a month. It is based on data collected globally regarding the number of qualified engineers, available training courses, and third-party solutions that expand […]
‘Reflecting on how kindly I was treated during my studies, I strive to create the same impression for those attending my course.’ Graduates of the CS center who have become instructors recall their years of study and share their journey into teaching. Applications for admission to the CS center are open until April 13. In-person training in St. Petersburg and Novosibirsk. Online for residents of […]
Employers often speak of a phenomenon known as a ‘talent shortage.’ I believe this is a myth; in reality, there is no talent shortage. Instead, there are two real problems. The objective one is the ratio between the number of job vacancies and the number of candidates in the labor market. The subjective one is the inability of specific employers to find, attract, and hire employees. The results […]
Table of contents for all articles in the ‘How to Take Control of Your Network Infrastructure’ series and links. Currently, 5 articles have been published: Chapter 1. Retention Chapter 2. Cleaning and Documentation Chapter 3. Network Security. Part One Chapter 3. Network Security. Part Two Supplement. On the three components essential for the successful operation of IT A total of about 10 articles will be written. Chapter […]
This article is the first in the series ‘How to Take Control of Your Network Infrastructure.’ The content of all articles in the series and links can be found here. I fully acknowledge that there are a sufficient number of companies where a simple network being down for one hour or even one day isn’t critical. Unfortunately or fortunately, I have not had the chance to work in such places. […]
This article is the second in the series 'How to Take Control of Your Network Infrastructure'. You can find the content of all articles in the series and links here. Our goal at this stage is to bring order to the documentation and configuration. By the end of this process, you should have the necessary set of documents and a network configured accordingly. Right now we […]
The company has purchased monitoring posts NEKST-M, domestically produced by 'Next Technologies'. This is to ensure the visualization of the operation of pump units, fire and security alarms, voltage availability at the starters, room temperature, and emergency water level. The heart of NEKST-M is the ATMEGA 1280, and this fact has been encouraging in terms of creating a custom set for specific needs. The task was set to accomplish this in the shortest possible time […]
This article is the third in the series 'How to Take Control of Your Network Infrastructure'. You can find the content of all articles in the series and links here. There's no point in speaking about the complete elimination of security risks. In principle, we cannot reduce them to zero. It's also important to understand that as we strive to make the network more secure, our solutions become […]
This article is the fourth in the series 'How to Take Control of Your Network Infrastructure'. You can find the content of all articles in the series and links here. In the first part of this chapter, we looked at some aspects of network security in the 'Data Center' segment. This part will be dedicated to the 'Internet Access' segment. Internet access security is undoubtedly one of the most complex topics […]