The final part of the trilogy about hackathons. In the first part, I discussed the motivation to participate in such events. The second part focused on the mistakes of the organizers and their outcomes. The final part will answer questions that did not fit into the first two parts. Share how you started participating in hackathons. I was studying for my master's degree at Lappeenranta University while simultaneously participating in competitions on […]
This publication complements the series of articles "What’s currently in the airwaves?" with a topic about broadcasting on short waves. The mass amateur radio movement in our country began with the assembly of simple radios for listening to transmissions from broadcasting stations. The first design of a crystal receiver was published in the magazine "Radio Amateur," No. 7, 1924. Mass broadcasting in the USSR began in 1922 on the "three thousand wave" […]
Let's take it step by step. What this illustration means will be explained later, but for now, allow me to begin with an introduction. On a cold February day, nothing foreshadowed trouble. A group of innocent students came for their first class on a subject they decided to call 'Methodology of Designing and Developing Information Systems.' It was just an ordinary lecture, the instructor was discussing agile […]
Last week, I spent developing my first public program — a Telegram bot that serves as a Bitcoin wallet, allowing users to 'tip' other participants in group chats and make external Bitcoin payments for themselves or others, known as 'Lightning Apps.' I assume that, in general, the reader is familiar with Bitcoin and Telegram, as I will strive to keep my writing concise without diving into details. […]
The recent disclosure of yet another vulnerability in Intel processors, known as MDS (or Zombieload), has sparked renewed debates about the performance degradation users will have to accept when opting for the proposed hardware fixes. Intel published its own performance tests, demonstrating that the fixes have minimal impact on performance, even with Hyper-Threading disabled. […]
We have long been interested in the topic of anonymity in cryptocurrencies and strive to keep up with the technological developments in this area. In our articles, we have already explored the principles of confidential transactions in Monero in detail and conducted a comparative review of existing technologies in this field. However, all anonymous cryptocurrencies today are built on the data model proposed by Bitcoin — […]
We continue our series on the structure of the Monero blockchain, and today's article will focus on the RingCT (Ring Confidential Transactions) protocol, which introduces confidential transactions and new ring signatures. Unfortunately, there is little information available online about how it works, and we have tried to fill this gap. We will discuss how this protocol allows the network to conceal […]
Hello again! The title of the article speaks for itself. In anticipation of the start of the 'Data Engineer' course, we offer to delve into who data engineers really are. The article contains many useful links. Enjoy reading. A simple guide on how to catch the wave of Data Engineering and not let it pull you into the depths. It seems that nowadays everyone […]
There has been a lot of controversy recently surrounding the cooperative modification Skyrim Together for The Elder Scrolls V: Skyrim. Initially, the developers were accused of code theft, and later there was information suggesting that they might never release their creation. Meanwhile, they continue to earn $30,000 a month thanks to subscribers on Patreon. To clear their reputation, the creators of Skyrim Together shared […]
After the relentless testing of graphics cards with real-time ray tracing, which seemed to leave all previous generation GPUs with no chance for a happy retirement, it's nice to remember that there are popular games with quite reasonable system requirements. Projects that focus entirely on network battles prioritize gameplay mechanics and often stand out from single-player blockbusters with their modest demands on […]
The new version of the IPFire 2.23 firewall distribution has been released. In this version: SSH agent forwarding can be enabled in the IPFire SSH service, allowing administrators to connect to the firewall and use SSH agent authentication when using IPFire as a bastion host for subsequent connections to an internal server. When creating multiple hosts to rewrite the local DNS zone, a record was automatically created […]
There is an opinion that multifunctional systems are weak. Indeed, this statement seems logical: the more interconnected and interdependent nodes there are, the higher the likelihood that if one of them fails, the whole system will lose its advantages. We have all encountered such situations multiple times with office equipment, cars, and gadgets. However, in the case of software […]