data encryption Archives

Tech Optimizer

February 11, 2026

Percona Expands Enterprise Database Stack With PostgreSQL Encryption And Valkey – Open Source For You

Percona has strengthened its position in the open source database market by introducing several key innovations, including the first fully open source implementation of Transparent Data Encryption (TDE) for PostgreSQL, 24/7 enterprise support for Valkey, and expanded Kubernetes Operators for MySQL, MongoDB, and PostgreSQL. The company has seen increased adoption from organizations moving away from proprietary licensing, with successful migrations such as BBVA transitioning to Percona's open source MongoDB stack. Percona has also engaged with the community through the release of the State of Open Source Database Management Report and hosting MySQL summits, while receiving recognition in various industry awards. The leadership team has expanded under CEO Peter Farkas, emphasizing the value of an open source-first approach.

Tech Optimizer

January 28, 2026

Top Android Antivirus Apps for 2026: Reviews and Key Features

Android users face increasing cyber threats as we approach 2026, with AI-driven malware and ransomware becoming more prevalent. The antivirus market has evolved to include advanced features like real-time threat intelligence and integrated privacy tools. Norton Mobile Security is noted for its machine learning-powered malware detection, VPN, app advisor, and dark web monitoring, achieving a 99.9% detection rate. TotalAV offers user-friendly antivirus scanning and system optimization, with features like real-time phishing protection and cloud-based scanning. Aura Antivirus combines antivirus with identity theft protection and family safety features, excelling in AI-driven behavioral analysis. Bitdefender Mobile Security is recognized for its lightweight design, anti-theft features, and effective web protection. McAfee Mobile Security provides secure Wi-Fi scanning and IoT integration, with high user satisfaction reported. Norton leads in predictive analytics, while TotalAV includes a VPN for remote workers. Aura offers family-oriented tools and compliance-friendly features, incorporating blockchain technology for secure identity verification. Bitdefender is efficient in battery usage and has a high detection rate. McAfee supports multi-device protection and has strong customer support. Norton’s dark web monitoring helps prevent identity theft, and TotalAV blocks trackers and ads. Aura links antivirus protection to financial security with credit monitoring. Bitdefender automates threat responses and has a strong anti-ransomware module. McAfee scans for vulnerabilities in smart devices and provides threat intelligence feeds. Future developments may include quantum-resistant encryption. TotalAV is praised for its user interface, while Aura encourages user feedback for improvements. Bitdefender uses machine learning to reduce false positives, and McAfee employs predictive modeling for personalized security. Organizations must evaluate antivirus solutions based on integration with existing security frameworks, cost, and performance impact. Emerging trends include biometric authentication and deeper hardware-level security protections.

Tech Optimizer

November 22, 2025

Percona Brings Transparent Data Encryption to Postgres

Percona introduced an open-source Transparent Data Encryption (TDE) extension for its PostgreSQL distribution at KubeCon+CloudNativeCon North America, addressing the demand for data protection solutions, particularly among financial institutions concerned about vendor lock-in. The TDE extension, named pg_tde, operates transparently, allowing users to input and query data without changes to interactions or schemas, while unauthorized access reveals only encrypted information. It supports all major key management services and is included in Percona's PostgreSQL distribution without additional licensing fees. The TDE solution helps organizations comply with standards like GDPR, HIPAA, SOX, and PCI DSS v4.0, offering benefits such as open-source readiness, stronger data protection, user-controlled encryption, seamless integration, centralized key management, effortless online encryption, and trusted support. Percona also offers solutions for MySQL and MongoDB and supports emerging technologies like Valkey.

Winsage

November 19, 2025

Windows 11’s Taskbar calendar is finally gaining support for viewing upcoming events and meetings — the glow up we’ve been waiting for

Microsoft is enhancing the Taskbar calendar flyout in Windows 11 to include an "agenda view," allowing users to view and interact with upcoming events and meetings. This feature, previously available in Windows 10, will debut in a preview next month. The update will provide a chronological list of events integrated with the Calendar, enabling users to join meetings directly. Additionally, Microsoft is introducing new AI capabilities, including AI-generated text in any text box and an agentic workspace feature. A hardware-accelerated version of BitLocker for faster data encryption will also launch next year on new PCs running Windows 11. The general availability of the new calendar feature is anticipated in 2026.

Tech Optimizer

October 26, 2025

Do Chromebooks Need Antivirus Software in 2025?

Chromebooks are a cost-effective alternative to traditional laptops, appealing to students and young professionals due to their built-in productivity tools and user-friendly interface. They feature sandboxing technology that enhances resilience against malware, making them suitable for users learning about digital security. Chromebooks do not natively support traditional antivirus software, but users can access Android-based antivirus applications via the Google Play Store. While vulnerabilities in Chromebooks account for less than 1% of reported issues, users should remain vigilant against threats like fake browser extensions, scam Android apps, phishing attempts, and insecure websites. Key security features of Chromebooks include automatic updates, sandboxing, verified boot, data encryption, and recovery options. Misconceptions persist about their security, such as the belief that all apps in Google Play are thoroughly checked and that malware cannot self-install. If a Chromebook is suspected of being compromised, users can uninstall recent extensions, reboot the device, or use the Powerwash feature for a factory reset. Over 4% of U.S. desktop users utilize Chrome OS, and 30 million students and educators worldwide rely on Chromebooks. They are modeled closely on Linux OS and, while immune to traditional viruses, can still be susceptible to malware. Recommended antivirus options for Chromebooks include Norton, Bitdefender, and Avast. With proper care, Chromebooks typically last between five to eight years.

Tech Optimizer

September 15, 2025

Postgres Pro TDE

Databases require robust protection against unauthorized access, primarily managed through Access Control Lists (ACL) using commands like GRANT and REVOKE. Challenges arise when attackers gain direct access to database files, especially if backups are stored insecurely or if databases are hosted in the cloud. Encrypting backups is common but can be cumbersome, particularly with large data volumes. If attackers access the file system, they may bypass SQL access altogether. Client-side encoding, such as using PostgreSQL's pgcrypto, protects sensitive data by encoding it before storage, but it faces challenges like key management, lack of SQL filtering, and the need for query rewrites. Transparent Data Encryption (TDE) allows SQL operations to function normally while keeping data unreadable on disk. Various TDE implementations exist, including Percona's initial TDE, which faced issues with unprotected indexes and performance slowdowns. Cybertec and EnterpriseDB encrypt entire clusters, simplifying the process but impacting performance and complicating technical support. Selective encryption approaches from Pangolin and Fujitsu allow for protecting specific tables, while Percona's recent TDE implementation also follows this model but lacks support for non-standard Table Access Methods (TAMs). Postgres Pro Enterprise TDE addresses key rotation and time-based analysis protection by storing a key index for each table page and using random initialization vectors and Message Authentication Codes for enhanced security. Future developments aim to improve TDE capabilities, including protecting compressed tablespaces and refining WAL data encryption.

AppWizard

September 11, 2025

These 20 free VPNs with 700 million downloads all have the same problem

Recent research has identified that 20 free VPN applications on Google Play share the same underlying code and a common vulnerability that compromises user data encryption. The study, conducted by researchers from Bowdoin College and Arizona State University, analyzed these apps, which have over 700 million downloads and generate revenue through ads while offering minimal value to users. Notable VPNs included in the study are Tetra VPN, VPN PotatoVPN, and VPN Proxy Master. These applications may mislead users into thinking they have diverse options, but they provide a uniform experience. Additionally, there are concerns about potential vulnerabilities that could expose private data and possible ties to China, a country known for weak privacy protections. The examined VPNs include Turbo VPN, VPN Monster, Snap VPN, and others. In contrast, established VPNs like Proton VPN and NordVPN are noted for their reliability and security.

AppWizard

August 26, 2025

77 Malicious Android Apps With 19M Installs Targeted 831 Banks Worldwide

Zscaler’s ThreatLabz team identified 77 malicious applications on the Google Play Store with over 19 million installations, which target financial institutions and compromise user data. A new variant of the Anatsa banking trojan, also known as TeaBot, now targets over 831 banks globally, up from 650, and has expanded its reach to countries like Germany and South Korea. Many of these apps disguise themselves as document readers, with some exceeding 50,000 downloads. The malware downloads the Anatsa payload after installation and uses Android’s Accessibility Services to automate malicious activities, including stealing financial information and facilitating fraudulent transactions. The malware employs techniques to evade detection, such as obfuscating its code and using corrupted ZIP archives. The most prevalent Android malware identified was Joker, found in nearly 25% of the analyzed applications, known for stealing contacts and device data. A smaller subset of apps contained “maskware,” which engages in credential theft and personal data collection.

Tech Optimizer

August 7, 2025

The best VPNs with antivirus of 2025: Expert tested and reviewed

A virtual private network (VPN) combined with antivirus software provides enhanced security for online and offline activities by creating encrypted tunnels that protect privacy and mask online behavior. In the UK, users increasingly adopt VPNs to bypass strict age verification checks. Key benefits of using a VPN include IP address disguise, data encryption, and access to geo-restricted content. The best VPN with antivirus currently recommended is the Surfshark One security suite, which offers a robust VPN experience and effective antivirus capabilities. Other notable VPNs with antivirus features include NordVPN, Private Internet Access (PIA), and CyberGhost, each with unique strengths and pricing structures. Surfshark allows unlimited device connections, offers a seven-day free trial, and has a 30-day money-back guarantee. It features IP masking, automated antivirus protection, and a user-friendly app. NordVPN is known for high-speed performance and robust antimalware features, allowing up to 10 simultaneous connections. PIA offers customizable settings and unlimited connections, while CyberGhost is optimized for streaming and allows connections on up to seven devices. Each service has specific pricing, trial periods, and user ratings across various platforms.

Tech Optimizer

August 7, 2025

Hackers Use Legitimate Drivers to Kill Antivirus Processes and Lower The System’s Defenses

Attackers have been using the ThrottleStop.sys driver to disable antivirus software in compromised networks since October 2024. This driver, designed for CPU throttling, allows malware to gain kernel-level memory access and terminate security processes. Initial access is typically gained through stolen RDP credentials or brute-forced administrative accounts, enabling the deployment of the AV killer alongside ransomware like MedusaLocker. Once inside, attackers extract additional user credentials using tools like Mimikatz and move laterally with Pass-the-Hash techniques. They upload two key components, ThrottleBlood.sys (the renamed driver) and All.exe (the AV killer), to user directories. The malware effectively disables Windows Defender and other endpoint protections, leading to severe data encryption in industries with exposed RDP endpoints, particularly affecting victims in Brazil, Ukraine, Kazakhstan, Belarus, and Russia. Securelist analysts noted that traditional self-defense features in Kaspersky products can counter this AV killer, but many organizations still rely on less effective solutions. The malware exploits two vulnerable IOCTL functions in the ThrottleStop.sys driver, allowing arbitrary memory reads and writes. It uses a loop to match and terminate antivirus processes by invoking kernel functions. The malware avoids detection by restoring original kernel bytes after execution. This situation highlights the need for improved driver integrity monitoring and robust security strategies.