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The malware complex 'Woodcutter' infects Linux OS.

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The National Security Agency and the Federal Bureau of Investigation of the United States have published a report stating that the 85th Main Center for Special Services of the General Staff of the Armed Forces of the Russian Federation (85 GЦСС ГРУ) is using a malware complex called "Drovorub." The "Drovorub" suite includes a rootkit as a Linux kernel module, a tool for file transmission, and network port redirection, along with a command server. The client part may […]

We are crafting a deployment task in GKE without plugins, SMS, or registration. Let's take a quick peek under Jenkins' jacket

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It all started when the team lead of one of our developer teams asked to temporarily expose their new application, which had recently been containerized. I did that. About 20 minutes later, a request came to update the application because they had added a very necessary feature. I updated it. A couple more hours later… well, you can guess what happened next […]

Servers in the Microsoft data center operated for two days on hydrogen

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Microsoft has announced the world's first large-scale experiment using hydrogen fuel cells to power servers in a data center. The 250 kW installation was made by Power Innovations. In the future, a similar 3-megawatt installation will replace traditional diesel generators, which are currently used as a backup power source in data centers. Hydrogen is being considered as a clean fuel because its combustion results in […]

Effective Use of ClickHouse. Alexey Milovidov (Yandex)

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Since ClickHouse is a specialized system, it is important to consider the features of its architecture during its use. In this presentation, Alexey will discuss examples of typical mistakes made when using ClickHouse that can lead to ineffective performance. Practical examples will illustrate how selecting a particular data processing scheme can significantly impact performance. Hello everyone! My name is […]

ReVoLTE Attack Allows Interception of Encrypted Calls in LTE

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A group of researchers from Ruhr University Bochum (Germany) has presented the ReVoLTE attack technique (PDF), which enables the interception of encrypted voice calls in 4G/LTE cellular networks that use VoLTE (Voice over LTE) technology for voice traffic transmission. To protect phone calls from interception in VoLTE, stream cipher-based encryption is applied to the channel between the client and the operator. The specification […]

Release of the Engineering Distribution CAELinux 2020

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A new release of the CAELinux 2020 distribution is now available, built on the package base of Xubuntu 18.04 and featuring an extensive selection of specialized applications aimed at automating engineering tasks, mathematical modeling, and scientific research. The size of the bootable ISO image, which can operate in Live mode, is 5.8 GB (x86_64). Some of the included applications are: A package for modeling and analyzing thermodynamic processes, Salome-Meca; […]

Automatic User Disconnection in ISPManager5 Lite without BILLmanager

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Given: VPS server with a perpetual ISPmanager Lite 5 license, 10-20 users on the server, Google Calendar with regular reminders about expiring hosting. Tired of paying for anything else, especially on subscription. Goal: to eliminate Google Calendar and manual reminders to clients about renewing hosting. To free myself from 'let them work a little longer' […]

In one week, 422,000 copies of LibreOffice 7.0 were downloaded.

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The Document Foundation has published download statistics for the week following the release of LibreOffice 7.0. It is reported that LibreOffice 7.0.0 was downloaded 422,000 times. The press release about the new release was viewed 113,000 times, and the video showcasing new features was watched 48,000 times. Notably, the almost stagnant project Apache OpenOffice has been left behind since the release at the end of September 2019 […]

The release of the web content management system WordPress 5.5 with plugin auto-update support

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The release of the web content management system WordPress 5.5 has taken place. The release has been codenamed "Eckstine" in honor of singer Billy Eckstine. This release is notable for introducing auto-update features for plugins and themes. On one hand, this feature will help address the issue of using outdated plugins that become targets for attacks after vulnerabilities are discovered. On the other hand, there is a risk of automated […]

BPF for the smallest, part one: extended BPF

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In the beginning, there was a technology called BPF. We looked at it in the previous, Old Testament, article in this series. In 2013, thanks to the efforts of Alexei Starovoitov and Daniel Borkman, an enhanced version was developed and included in the Linux kernel, optimized for modern 64-bit machines. This new technology briefly had the name Internal BPF, […]

Migration from Zimbra OSE 8.8.15 to Zimbra 9 Open Source from Zextras

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After Zextras released its own builds of Zimbra Collaboration Open-Source Edition 9, many administrators decided to upgrade their mail servers to the new version and reached out to Zextras technical support to inquire about how this can be done without jeopardizing the functionality of one of the enterprise's key systems. Upgrading to Zimbra OSE 9 from Zextras can be done […]

Release of nginx 1.19.2 and njs 0.4.3

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The release of the main branch of nginx 1.19.2 has been formed, continuing the development of new features (only changes related to fixing serious bugs and vulnerabilities are made in the parallel stable branch 1.18). Key changes: Keepalive connections are now starting to close before exhausting all available connections, and corresponding warnings are reflected in the log. An optimization for reading the client’s request body has been implemented when using chunked transfer. […]

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