Optical compact discs became widely available in 1982, but the prototype was revealed even earlier in 1979. Initially, CDs were developed as a replacement for vinyl records, offering a higher quality and more reliable medium. It is believed that laser discs are the result of a collaboration between the teams of two technology corporations — Japan's Sony and the Netherlands' Philips. The basic technology of 'cold lasers' […]
It is no secret that the internet is a very hostile environment. The moment you launch a server, it is instantly subjected to massive attacks and multiple scans. The scale of this junk traffic can be assessed through honeypots used by security experts. In fact, on an average server, 99% of the traffic can be malicious. A tarpit is a port trap used to slow down incoming connections. If an external system connects […]
Statistics for the 24 hours after setting up the honeypot on a Digital Ocean node in Singapore Piu-piu! Let's get straight to the attack map. Our super cool map shows the unique ASNs that connected to our Cowrie honeypot in the past 24 hours. Yellow corresponds to SSH connections, while red indicates Telnet. Such animations often impress the company's board of directors, helping to secure more funding for security and […]
In February, Austrian Christian Haschek published an interesting article on his blog titled 'I Scanned All of Austria.' Naturally, I became curious about what would happen if I repeated this research, but focusing on Ukraine. Several weeks of round-the-clock data collection, a couple of days to compose the article, and during this research, conversations with various representatives of our community, […]
We continue the marathon of leaks from Russian databases left in public access by their owners. This time, a MongoDB database was discovered that does not require authentication, containing personal data and photographs of borrowers from the South, Ural, and Volga Federal Districts, along with all their loan applications. Disclaimer: all information below is published solely for educational purposes. The author did not gain access […]
Hello! Inspired by the post 'With a Light Touch, the Tablet Turns into… an Additional Monitor,' I decided to create my own laptop-tablet setup, but not using IDisplay, but with Air Display. The program, like IDisplay, can be installed on PC and Mac, iOS and Android. In the author's setup, the tablet works as a second monitor due to the installed virtual machine […]
Consensus algorithms, asynchronous fault tolerance to unexplainable errors, directed acyclic graphs, distributed ledgers — what connects these concepts and how to avoid overthinking it — in the article about Hedera Hashgraph. Presented by Swirlds Inc.: the Hedera Hashgraph distributed ledger platform. Starring: Lemon Baird, mathematician, creator of the Hashgraph algorithm, co-founder, CTO, and chief scientist […]
There are many ways to enhance web performance. One of them is preloading content that will be needed later. Prefetching CSS, pre-rendering the full page, or resolving a domain name. We get everything ready in advance and then instantly display the result! Sounds cool. Even cooler is that this is very easily implemented. Five tags give the browser a command for preemptive actions: […]
Each version of Firebird has its own version of the database disk structure format – O(n)D(isk)S(tructure). Up to and including version 2.5, the Firebird engine could work with ODS from previous versions, meaning databases from older versions could be opened by the new version and operated in compatibility mode. However, the Firebird 3.0 engine only works with databases in its own ODS version 12.0. To switch […]
Microsoft announced the Fluent Design System concept a couple of years ago, shortly after the release of Windows 10. Gradually, developers incorporated more and more Fluent Design elements into 'the ten', adding them to universal applications and so on. But Explorer still remained classic, even in light of the ribbon interface implementation. But now that has changed. It is expected that 2019 might […]
Hello, Habr! Last fall, Kaggle hosted a competition for classifying hand-drawn images Quick Draw Doodle Recognition, where among others, a team of R enthusiasts participated, consisting of Artem Kleptsov, Philip Upravitele, and Andrey Ogurtsov. We won’t describe the competition in detail, as that has already been done in a recent publication. This time, we didn’t manage to farm medals, but […]
Tonight will see another release of Kubernetes — 1.14. As per our blog's tradition, we will discuss the key changes in this remarkable Open Source product's new version. The information used to prepare this material comes from the Kubernetes enhancements tracking table, CHANGELOG-1.14, and relevant issues, pull requests, and Kubernetes Enhancement Proposals (KEP). Let's start with an important introduction by SIG cluster-lifecycle: dynamic […]