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Update of the free antivirus package ClamAV 0.101.3

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Cisco has released a patch for the free antivirus package ClamAV 0.101.3, which resolves a vulnerability that could trigger a denial of service by sending a specially crafted zip archive as an attachment. This issue is a variant of a non-recursive 'zip bomb', the unpacking of which requires a significant amount of time and resources. The essence of the method is to place data in the archive that achieves maximum compression for the zip format — […]

A method for detecting incognito mode browsing in Chrome 76 has been found.

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In Chrome 76, a loophole in the implementation of the FileSystem API was closed, which allowed the detection of incognito mode usage from web applications. Starting with Chrome 76, instead of blocking access to the FileSystem API, which was used as an indicator of incognito mode activity, the browser no longer restricts the FileSystem API but instead clears any changes made after the session. It turns out that the new implementation has weaknesses, allowing it to still […]

Retrospective: How IPv4 Addresses Were Depleted

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Geoff Huston, chief researcher engineer at the internet registrar APNIC, predicted that IPv4 addresses would run out by 2020. In this new series of materials, we will refresh information about how the addresses were depleted, who still has them, and why this happened. / Unsplash / Loïc Mermilliod Why Addresses Are Running Out Before delving into the story of how the pool was 'drying out' […]

Cryptographic Attacks: An Explanation for Confused Minds

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When people hear the word 'cryptography,' some might think of their WiFi password, the green padlock next to their favorite website's address, and how difficult it is to access someone else's email. Others might recall the series of vulnerabilities from recent years with alarming abbreviations (DROWN, FREAK, POODLE…) and stylish logos, accompanied by urgent warnings to update their browser. Cryptography encompasses all of this, but the essence lies elsewhere. It resides in the delicate balance between […]

Are multimodal DBMS the foundation of modern information systems?

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Modern information systems are quite complex. Their complexity is largely due to the intricacies of the data being processed within them. The complexity of the data often lies in the variety of data models used. For example, when data becomes 'big', one of the troublesome characteristics is not only its volume ('volume'), but also its variety ('variety'). If you don’t yet find a flaw in this reasoning, then […]

Release of the cryptographic library LibreSSL 3.0.0

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The developers of the OpenBSD project have announced the release of the portable edition of the LibreSSL 3.0.0 package, which is the fork of OpenSSL aimed at providing a higher level of security. The LibreSSL project focuses on effectively supporting SSL/TLS protocols by removing unnecessary features, adding additional security measures, and undergoing significant cleaning and reworking of the codebase. The release of LibreSSL 3.0.0 is considered experimental, in which […]

The code for the BlazingSQL SQL engine, which uses GPU for acceleration, has been opened.

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The source code of the BlazingSQL SQL engine, which utilizes GPUs to accelerate data processing, has been announced. BlazingSQL is not a full DBMS, but rather positioned as an engine for analyzing and processing large datasets, comparable in its tasks to Apache Spark. The code is written in Python and is open under the Apache 2.0 license. BlazingSQL is suitable for executing single analytical queries on […]

The size of directories isn't worth our efforts

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This is a completely useless, impractical, yet amusing little post about directories in *nix systems. It’s Friday after all. During interviews, boring questions about inodes and everything-is-a-file often arise, which few can answer sensibly. But if you dig a little deeper, you can find some interesting things. To understand the post, here are a few points: everything is a file. A directory is also […]

Energy Efficiency in the Office: How to Reduce Actual Energy Consumption?

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We often discuss energy-saving opportunities in data centers through thoughtful equipment placement, optimal cooling, and centralized power management. Today, we will talk about how to save energy in the office. Unlike data centers, electricity in offices is needed not only for equipment but also for people. Therefore, achieving a PUE ratio here around […]

Website Statistics and Your Small Storage

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The Webalizer utility and Google Analytics tool helped me for many years to get an idea of what happens on websites. Now I understand that they provide very little useful information. With access to my access.log file, figuring out statistics is very simple and requires only basic tools such as sqlite, html, SQL, and any scripting […]

Release of the Plone 5.2 Content Management System

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At the end of July, developers released the long-awaited version of one of the best content management systems—Plone. Plone is a Python-based CMS using the Zope application server. Unfortunately, it is relatively unknown in the post-Soviet space, but widely used in educational, governmental, and scientific circles worldwide. This is the first release fully compatible with Python 3, and work on […]

Is Kafka on Kubernetes Good?

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Welcome, Habr! Once upon a time, we were the first to introduce the Kafka topic to the Russian market, and we continue to monitor its development. In particular, we found the interaction between Kafka and Kubernetes interesting. An overview (and quite cautious) article on this topic was published in the Confluent company blog last October, authored by Gwen Shapiro. Today, we […]

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