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Tech Optimizer
August 26, 2025
A team decided to test PostgreSQL's capabilities with a one-petabyte database, setting a challenge for December 10, with a report due by January 20. They initially sought cloud storage but found no provider could meet their requirement for a single chunk of storage, leading them to rent physical servers. They used Shardman, a distributed database engine, to manage the database across seven servers. They employed the YCSB benchmark for performance testing and faced various challenges, including data loading issues and hardware problems. By January 15, they reached 863 terabytes of data generation, falling short of their petabyte goal, and documented their findings for future reference.
AppWizard
August 25, 2025
Zscaler's ThreatLabs team discovered 77 malicious Android applications on Google Play that collectively garnered over 19 million downloads. The Anatsa (Tea Bot) banking trojan was identified as the main threat, evolving to target 831 banking and cryptocurrency apps. More than 66% of the malicious apps contained adware, while nearly 25% were infected with Joker malware, which can perform intrusive actions like sending texts and accessing sensitive information. A variant of Joker, named Harly, disguises itself within legitimate applications. Anatsa employs various evasion tactics, including using a decoy app to download its payload post-installation and altering package names to complicate detection. Following the findings, Google removed the identified malicious apps from the Play Store, and users are advised to ensure their Play Protect service is active and to take precautions if infected.
AppWizard
August 25, 2025
Security experts at Doctor Web have identified a sophisticated Android spyware campaign targeting Russian business leaders, utilizing malware named Android.Backdoor.916. First detected in January 2025, this malware is distributed through APK files disguised as security applications, particularly under the name GuardCB, which mimics the emblem of the Central Bank of the Russian Federation. Other variants include “SECURITY_FSB” and “FSB,” and the app interface is exclusively in Russian. The malware is disseminated via private messages on popular messaging platforms, avoiding official app stores. Upon installation, it simulates device scans and generates fictitious threat reports while activating extensive spyware modules that request permissions for geolocation, camera and microphone usage, SMS and contact access, call logs, and background operation. It can transmit SMS messages, upload contact lists, forward call history and location data, and exfiltrate media. It also enables real-time audio streaming, video capture, and screen activity monitoring, using Accessibility Service to maintain a keylogger for intercepting sensitive content from various applications. Control over the malware is maintained through a modular system that reconnects to the command server every minute, with fallback connectivity options to multiple hosting providers. The malware is designed for targeted cyber-espionage rather than mass infections, focusing on corporate executives and business figures. Doctor Web's antivirus solutions for Android can detect and eliminate known variants of this backdoor, highlighting the vulnerability of high-value individuals to mobile spyware disguised as legitimate applications. Experts recommend enhancing mobile security policies and educating high-risk employees about social engineering tactics.
Winsage
August 24, 2025
LibreOffice 25.8 has been released by The Document Foundation, ending support for Windows 7, 8, and 8.1, meaning users on these operating systems will no longer receive updates or security patches. The new version requires a minimum of Windows 10 and includes performance enhancements, such as faster document loading and improved interoperability with Microsoft formats. Security upgrades include AES-256 encryption and PDF 2.0 export capabilities. The decision to discontinue support for older Windows versions reflects a broader industry trend towards modernization and innovation. Future versions will also require macOS 11 or later. Users on outdated systems are encouraged to evaluate alternatives or stick with earlier versions.
AppWizard
August 22, 2025
Google will transition to 64-bit app compatibility for Google TV and Android TV starting in August 2026. All new applications and updates submitted to Google Play for these platforms must support both 32-bit and 64-bit ARM architectures. Google will provide developers with tools to assist in this transition, including support for various Nvidia Shield models and a 64-bit Google TV emulator for macOS devices with Apple Silicon. 32-bit support will remain available for older devices during this transition.
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