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The DDoS protection company admitted that it itself launched DDoS attacks, acknowledged its founder.

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By 2016, vDos became the most popular service in the world for ordering DDoS attacks. If conspiracy theories are to be believed, antivirus companies themselves spread viruses, while DDoS protection services initiate these attacks themselves. Of course, this is just fiction… or is it? On January 16, 2020, the Federal District Court of New Jersey found 22-year-old Tucker Preston, a resident of Macon, […]

PostgreSQL Antipatterns: hitting the dictionary with a heavy JOIN

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We continue our series of articles dedicated to exploring lesser-known ways to enhance the performance of seemingly simple queries in PostgreSQL: a rare entry will make it halfway through JOIN Sisyphus JOIN arrays harmful JOIN and OR CTE JOIN CTE. Don’t think I dislike JOIN that much… 🙂 But often, without it, the query is significantly more efficient than with it. So today, let’s try […]

Three levels of auto-scaling in Kubernetes: how to use them effectively

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To fully master Kubernetes, one must understand the various methods of scaling cluster resources: according to the system's developers, this is one of the main tasks of Kubernetes. We have prepared a high-level overview of the mechanisms for horizontal and vertical autoscaling and resizing of clusters, as well as recommendations on how to use them effectively. The article Kubernetes Autoscaling 101: Cluster Autoscaler, Horizontal Autoscaler, and Vertical Pod Autoscaler has been translated by the team, […]

A new outbreak of H2Miner worms exploiting Redis RCE has been detected.

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A day ago, one of the servers in my project was attacked by a similar worm. In search of an answer to the question "what was that?" I found a wonderful article by the Alibaba Cloud Security team. Since I couldn't find this article on Habr, I decided to translate it especially for you <3 Introduction Recently, the Alibaba Cloud security team discovered a sudden outbreak of H2Miner. […]

The Evolution of Web Application Firewall: From Network Firewalls to Cloud Protection Systems with Machine Learning

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In our previous article on cloud topics, we discussed how to protect IT resources in the public cloud and why traditional antivirus solutions are not entirely suitable for this purpose. In this post, we will continue the topic of cloud security, discussing the evolution of WAF and the options available: hardware, software, or cloud. What is WAF? More than 75% of hacker attacks are aimed at […]

HighLoad++, Andrey Gushchin (Zabbix): High performance and native partitioning

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We will explore the integration of Zabbix with TimescaleDB as a backend. We will demonstrate how to set it up from scratch and how to migrate from PostgreSQL. Additionally, we will present comparative performance tests of the two configurations. HighLoad++ Siberia 2019. Venue: Tomsk. June 24, 16:00. Abstracts and presentation. The next HighLoad++ conference will take place on April 6 and 7, 2020, in Saint Petersburg. Details and tickets at […]

Once again about DevOps and SRE

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Inspired by the discussion in the AWS Minsk Community chat, there has been a growing debate around the definitions of DevOps and SRE. Although these discussions have become somewhat repetitive, including for myself, I decided to present my perspective to the Habr community. For those interested, welcome […]

A visual guide to troubleshooting Kubernetes issues

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Trans. note: This article is part of the freely accessible materials of the learnk8s project, which educates companies and individual administrators on how to work with Kubernetes. In it, Daniele Polencic, the project leader, provides a clear guide on what steps to take in the event of common issues with applications running in a K8s cluster. TL;DR: here's a diagram that will help you […]

Tracing and Monitoring in Istio: Microservices and the Principle of Uncertainty

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The Heisenberg Uncertainty Principle states that one cannot simultaneously measure an object's position and its velocity. If the object is in motion, it has no position. And if there is a position, then it has no velocity. As for microservices on the Red Hat OpenShift platform (and managed by Kubernetes), thanks to suitable open-source software, they can simultaneously report both […]

Do we need a data lake? And what about data storage?

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This article is a translation of my article on Medium — Getting Started with Data Lake, which turned out to be quite popular, probably due to its simplicity. Therefore, I decided to write it in Russian and add a bit more detail so that an ordinary person who is not a data specialist could understand what a data warehouse (DW) is and what a data lake […]

5. Fortinet Getting Started v6.0. NAT

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Hello! Welcome to the fifth lesson of the Fortinet Getting Started course. In the last lesson, we discussed security policies. Now it’s time to enable local users to access the Internet. In this lesson, we will explore the NAT mechanism. In addition to allowing users to go online, we will also look at the method for publishing internal services. The brief theory is presented under […]

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