Operation Archives

Tech Optimizer

May 5, 2025

One-click Postgres Pro optimization with pgpro_tune

pgpro_tune is a command-line utility designed to optimize the initial server configuration of Postgres Pro based on hardware specifications. It scans the server to identify key hardware details, processes these values through shell scripts that encapsulate tuning expertise, and generates recommended parameters for PostgreSQL settings, including memory management, autovacuum tuning, connection limits, and statistics collection. The utility appends these settings to the postgresql.conf file, ensuring they override the default settings. pgpro_tune supports various presets for different use cases and allows database administrators to create custom presets. It runs automatically during cluster initialization and can be executed manually at any time, applying changes through standard PostgreSQL methods. This tool aims to streamline the tuning process, reduce the risks of misconfiguration, and enhance performance without replacing the need for advanced tuning in specialized scenarios.

Tech Optimizer

May 5, 2025

Chimera Malware: Outsmarting Antivirus, Firewalls, and Human Defenses

X Business, an e-commerce store specializing in handmade home décor, experienced a cybersecurity incident involving a malware strain called Chimera. The attack began during a routine update to their inventory management system and escalated within 12 hours, resulting in halted customer orders, locked employee accounts, and a crashed website. The attackers demanded a ransom of 0,000 in cryptocurrency, threatening to expose sensitive customer data. Chimera is an AI-driven malware that adapts its code to evade detection, targeting both Windows and macOS systems. It exploited a zero-day vulnerability in Windows' Print Spooler service and bypassed macOS security measures by forging code signatures. The malware used social engineering tactics to deceive employees into activating malicious payloads, leading to compromised systems and encrypted customer data. The recovery process took 48 hours, utilizing cybersecurity tools like CrowdStrike Falcon and SentinelOne Singularity to identify and isolate the malware. Data restoration was achieved through Acronis Cyber Protect and macOS Time Machine, while vulnerabilities were addressed with Qualys and emergency patch deployment via WSUS. The network security framework was improved using Cisco Umbrella and Zscaler Private Access to implement a Zero Trust architecture. The incident highlights the need for small enterprises to adopt proactive cybersecurity strategies, including a 3-2-1 backup approach, Zero Trust models, investment in AI-driven defense tools, and employee training to recognize social engineering attempts.

AppWizard

May 3, 2025

Minecraft runs on 8MB of VRAM using a 20-year-old GPU

The gaming community has revived underperforming hardware, successfully running Minecraft on a 20-year-old GPU, the 3D Phantom XP-2800, with only 8MB of VRAM. A video from Budget-Builds Official details this achievement using an antiquated desktop with Windows XP. Initially, Minecraft Alpha 1.2.6 faced OpenGL compatibility issues, which were resolved by using Microsoft-provided SiS drivers for the card, allowing it to display the game on a CRT monitor. After updates, the game ran, but attempts to run Minecraft 1.6.4 resulted in it loading at one frame per second before crashing. The team optimized performance by removing visual effects, lowering the resolution, and hosting the world server on a nearby laptop, along with using an 8x8 texture pack to stabilize the game.

Winsage

May 3, 2025

Janet Jackson’s ‘Rhythm Nation’ crashed some Windows laptops for years

Playing Janet Jackson's 1989 hit "Rhythm Nation" near certain laptops manufactured from 2005 onward can cause malfunctions, particularly affecting their hard drives. This issue was highlighted by Microsoft employee Raymond Chen, who noted that a major computer manufacturer had to create a custom audio filter to address specific sound frequencies that could disrupt 5,400 RPM hard drives. The problem was serious enough to be listed in the NIST National Vulnerability Database. The audio filter remained in use until at least the Windows 7 era, and there was a hardware vendor that sought an exception to a rule requiring users to disable all audio processing, citing potential physical damage to computers if the audio processing was disabled. Chen expressed uncertainty about whether this rule still exists today.

AppWizard

May 3, 2025

How to make the most sense out of Google I/O

Google I/O is an upcoming event where Google will announce new innovations, including updates related to Android. Presentations may cover complex topics that can be overwhelming for some audiences, but there are resources available to help distill this information. Android Central will provide a summary of announcements, including lesser-known developments. The event primarily targets developers and shareholders, with a focus on enhancing share value. For specific developments like Android 16 for the Galaxy S25, attending Samsung's developer conference may be more beneficial.

Winsage

May 3, 2025

I use these 5 free tools to search files on Windows 11, and they are a lot better than Windows Search

Finding files swiftly and efficiently is essential for productivity, but Windows Search often falls short. A range of third-party tools exists that can significantly enhance your file search experience on Windows 11, offering superior speed, features, and user experience. 1. Everything: This lightweight application indexes files quickly, creating a searchable database with real-time updates. It has a minimalist interface and uses minimal system resources. 2. Listary: Integrates with File Explorer, offering instant search capabilities and customizable commands. It allows easy navigation between directories and serves as a launcher for files and applications. 3. DocFetcher: An open-source tool that indexes not just filenames but also the contents of text files, supporting formats like PDFs and Word documents. It requires initial indexing but provides quick search results afterward. 4. SearchMyFiles: Offers customizable search options with advanced filters and can find duplicate files. It is portable and user-friendly, suitable for various users. 5. FileSeek: A versatile tool for both simple and complex searches, capable of searching file contents and defining specific parameters. It offers search profiles for quick access and has a trial version that reverts to a free version. These tools outshine Windows Search due to their rapid speed, advanced search options, file content indexing, and lightweight operation.

Tech Optimizer

April 30, 2025

PostgreSQL 18: Part 4, or CommitFest 2025-01

PostgreSQL 18 includes significant enhancements in monitoring capabilities and new features. Key updates include: - Buffer information in EXPLAIN ANALYZE is now enabled by default, providing detailed buffer statistics for better query performance insights. - The pg_stat_io view tracks I/O statistics in bytes (read_bytes, write_bytes, extend_bytes), simplifying monitoring of I/O operations. - Enhanced monitoring of Write-Ahead Logging (WAL) statistics is introduced, allowing tracking of WAL operations and new WAL segment initialization. - The pg_stat_get_backend_io function provides I/O statistics for specific client processes, aiding in performance tuning. - The VACUUM (verbose) command now includes visibility map information, detailing all-visible pages after a vacuum operation. - The pg_stat_all_table view tracks total vacuum and analysis times per table, and users can adjust autovacuum workers without server restarts. - A new uuidv7 function generates UUIDs with a Unix-epoch timestamp for ordered identifiers. - The passwordcheck extension enforces a minimum password length for better security practices. - Improvements to the jsonb type ensure correct handling of null conversions. - The casefold function facilitates case-insensitive searches. - The RETURNING clause in DML commands now supports returning both old and new values. - The to_number function can convert Roman numerals to numeric values.

Tech Optimizer

April 30, 2025

5 Free Antivirus Programs To Eliminate Malware and Viruses (2025)

Users are increasingly seeking effective malware protection without the cost of premium software, leading to the emergence of free antivirus programs that offer robust security features. This trend is particularly beneficial for Windows 11 users who want real-time protection while staying within budget. Several leading cybersecurity firms provide free antivirus solutions equipped with advanced features such as real-time scanning, phishing defenses, cloud-based malware detection, and system optimization tools. These free programs can adequately protect a diverse audience, including gamers, remote workers, students, and casual users. Top free antivirus programs for Windows 11 in 2025 include: 1. Bitdefender Antivirus Free: Utilizes the same malware engine as its paid version, offers real-time detection, anti-phishing protection, and is ultra-light on system resources. 2. Microsoft Defender Antivirus: Integrated into Windows 11, provides cloud-delivered protection and built-in ransomware mitigation without ads. 3. Avast Free Antivirus: Offers additional tools like network scanning and a Do Not Disturb mode for gaming. 4. AVG AntiVirus Free: Features a simpler interface, link and attachment protection, and fewer pop-ups. 5. TotalAV Free Antivirus: A newer option with a clean interface, real-time protection, and a junk file cleaner. Key factors to consider when selecting free antivirus software include real-time protection, low resource usage, minimal intrusion, and extra security tools. While free solutions are suitable for most users, premium protection may be necessary for small businesses or those handling sensitive data. For gamers, Bitdefender and Avast are recommended for their low system impact and gaming modes. For remote workers, Microsoft Defender and TotalAV are highlighted for their ease of use and integrated protections. Essential features of effective antivirus programs include robust virus protection, real-time scanning, and a behavior shield to detect new threats. Performance should not significantly slow down the system, and the interface should be user-friendly. Experts recommend Windows Defender for basic protection, with AVG and Avast receiving endorsements for their feature balance, while Bitdefender Free is noted for its detection rates and minimal system impact. Free antivirus programs may lack advanced features and technical support compared to paid versions.

Winsage

April 26, 2025

3 reasons you shouldn’t use Btrfs, ReFS, or ZFS on Windows

Windows has relied on the NTFS file system for many years, while alternatives like Microsoft's ReFS, ZFS, and Btrfs have emerged. ZFS and Btrfs are not officially supported on Windows, leading users to depend on community-developed drivers that can cause stability issues, including crashes and blue screens of death. Performance tests show that ReFS underperforms compared to NTFS, with significant declines in disk performance across various metrics. Similar performance issues have been reported for Btrfs. Additionally, ReFS lacks certain features available in NTFS, such as support for portable media, specific encryption options, extended file attributes, and disk quotas. Currently, Windows is not fully equipped to support these newer file systems, and while ReFS is under development, the future of ZFS and Btrfs on Windows remains uncertain.

AppWizard

April 24, 2025

Trojanized Alpine Quest app geolocates Russian soldiers

Russian soldiers are facing a digital threat from a modified Android application, Alpine Quest, which has been tampered with to track their locations and extract sensitive information. The malware, known as Android.Spy.1292.origin, was embedded in an older version of the app and distributed as a free upgrade to Alpine Quest Pro via a fraudulent Telegram channel. Once installed, the trojan collects various types of information, including geolocation, downloaded files, phone numbers, and app versions, and can download additional modules to exfiltrate specific files. Additionally, researchers at Kaspersky discovered a backdoor hidden in counterfeit software updates for ViPNet, a secure networking suite. The malware, disguised as msinfo32.exe, connects to a command-and-control server to steal files and deploy more malicious components. On the Ukrainian side, Russian operatives are conducting a phishing campaign targeting Ukrainian officials and allies, using social engineering tactics to hijack Microsoft 365 accounts. Attackers contact victims via messaging apps, invite them to video calls, and trick them into providing OAuth codes, granting access to their accounts.