operating system Archives

Tech Optimizer

September 11, 2026

12-Year-Old PostgreSQL Flaw Lets Attackers Execute Code on Database Servers

A PostgreSQL vulnerability identified as CVE-2026-6471, known as PostGREShell, allows attackers with minimal replication access to execute arbitrary code on database servers. This flaw has existed for approximately 12 years and affects non-superuser PostgreSQL accounts with the REPLICATION attribute, commonly used for backup and replication tasks. The vulnerability arises from inadequate restrictions on the library path specified as an output plugin name, enabling an attacker to exploit the logical decoding feature to load a malicious library. Exploitation requires only a PostgreSQL account with REPLICATION privileges, wal_level set to logical, and access to SMB port 445. The flaw was discovered by Cyera Research and dates back to PostgreSQL 9.4's release in 2014. Patches have been released for versions 18.6, 17.11, 16.15, 15.19, and 14.24, and organizations are advised to upgrade to these versions. Database administrators should audit accounts with the REPLICATION attribute and restrict replication connections. Limiting outbound network access and monitoring logical replication activity is also recommended to mitigate risks.

Tech Optimizer

September 11, 2026

Improving Lakebase Postgres compute cache

Lakebase Postgres employs a disaggregated storage model that enhances data management through efficient caching, utilizing an object store like S3 for backups. The caching operates on two layers: within distributed storage for optimizing write and read performance, and on the Postgres compute side for ultra-fast access to frequently accessed pages. Traditional Postgres caching involves shared buffers and the OS page cache, which leads to double buffering and inefficiencies. Lakebase Postgres addresses these issues by implementing a local file cache (LFC) and larger shared buffers, allowing for more effective memory utilization without the drawbacks of the OS page cache. The shared buffers are set to a maximum of 1 GB, while the LFC can utilize up to 75% of DRAM. The introduction of huge pages reduces memory management overhead and improves performance, resulting in significant throughput increases and reduced latency in production environments. Recent enhancements have shown up to 2× throughput improvements and substantial reductions in CPU usage. The focus is now on extending these benefits to autoscaling Postgres computes, with plans to implement dynamic shared buffers and autoscaling huge pages.

Winsage

September 11, 2026

Microsoft acknowledges Bluetooth on Windows 11 is a hot mess, begins testing nine major fixes

Microsoft has released update 26200.9539 for Windows 11, aimed at improving Bluetooth functionality with up to nine significant fixes. This update enhances the calling experience for Bluetooth headset users during virtual meetings by providing a built-in volume flyout when adjusting volume. It also improves the stability of the Bluetooth & devices page in Settings and addresses microphone compatibility issues for certain Bluetooth Classic Audio accessories. Users with newer Bluetooth headsets featuring LE Audio can expect faster connections, more stable performance, and enhanced audio calling quality. Microsoft is collaborating with OEMs to improve driver quality through the Driver Quality Initiative (DQI), which focuses on enhancing driver trustworthiness, phasing out low-quality drivers, and improving the security and reliability of updates. The initiative aims to strengthen kernel-mode drivers and reduce reliance on third-party driver code, while also streamlining Windows Update to reject outdated or problematic drivers. Further details on these enhancements are expected later this year.

Tech Optimizer

September 11, 2026

Top 10 Best Endpoint Encryption Software in 2026

Microsoft BitLocker and Apple FileVault are free, integrated encryption solutions within their respective operating systems. As of 2026, the focus is on investing in management solutions that provide compliance proof, key escrow, recovery options, and policy enforcement across devices. Native encryption solutions lack certain management features, prompting the need for additional management layers from various vendors. Legacy freeware like TrueCrypt is no longer maintained, posing risks for business use, while VeraCrypt is a credible open-source alternative but lacks centralized management. Management options include Microsoft Intune for Windows, Sophos for mixed fleets, and specialized providers like Check Point and WinMagic for advanced needs. Organizations should ensure proper key management before enforcing encryption to avoid data loss and regularly test recovery processes. It is crucial to verify claims regarding compatibility and pre-boot options when selecting encryption solutions. Native engines are free, but management layers typically charge per endpoint annually.

AppWizard

September 11, 2026

Android can now move passwords and passkeys between password managers

Google has integrated a password manager transfer feature into the Android operating system, allowing users to move passwords and passkeys between compatible applications without exporting an unencrypted CSV file. This feature is available for devices running Android 8 and later, including users in the UAE. It supports popular password managers such as Google Password Manager, 1Password, Bitwarden, and Dashlane, with more providers expected to join. The transfer process involves selecting the import or copy option in the new password manager app, where Android identifies compatible managers and users authorize the transfer. This functionality operates through Google Play Services, requiring no separate Android version update.

Winsage

September 11, 2026

Microsoft Issues New Windows 11 Release Preview Builds

Microsoft has released new builds for Windows 11, versions 24H2 and 25H2, available for download from the Release Preview channel, specifically builds 26100.9539/26200.9539. The rollout is structured into two phases: a gradual rollout, which allows features to reach devices incrementally, and a normal rollout, which releases updates to all eligible devices simultaneously. Enhancements in this update include improvements to File Explorer, Wi-Fi support in the Windows Recovery Environment, support for Emoji 17.0, a new Tips widget, various personalization, Bluetooth, and accessibility improvements, and the ability to remap the Copilot key to Right Ctrl or Context Menu. The last updates for versions 24H2 and 25H2 were released in mid-August, and Microsoft introduced its first 26H2 build to the Release Preview channel two weeks ago. There is speculation about the potential release of Windows 11 version 26H2 in October, possibly coinciding with upcoming Patch Tuesday updates.

Winsage

September 11, 2026

A Windows 11 Software Glitch Resulted In One User’s Account Disappearing From The Login Screen, But Two Registry Fixes Helped Saved Hours Of Troubleshooting

A Windows 11 user experienced an unusual software glitch that caused their account to disappear from the login screen, although the local account remained intact. The original profile and files were still accessible. Two registry modifications were suggested to restore the account's visibility: 1. Navigate to HKEYLOCALMACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogonSpecialAccountsUserList, locate the DWORD for the affected account, and change its value from “0” to “1”. 2. Go to HKEYLOCALMACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesSystem and change the HideFastUserSwitching key from “1” to “0”. These changes should allow the account to reappear under the login screen's "Other user" section without needing a system restart. Users may need administrative privileges to access the Registry Editor, and a workaround is available for those whose accounts are missing.

AppWizard

September 10, 2026

New Android Feature Lets You Securely Switch Password Managers

Google has introduced a new system-level feature for Android that simplifies the transfer of passwords and passkeys between password managers. This feature allows users to transfer credentials with a few taps, eliminating the need for file downloads and reducing the risk of data exposure. Previously, migrating credentials involved exporting sensitive information into unencrypted CSV files, which posed security risks. The new mechanism operates at the operating system level, enabling direct communication between applications. Users can initiate transfers by selecting the option to import credentials from another provider, after which Android identifies existing password manager apps. The process requires user authentication and ensures that sensitive information is not stored in an unencrypted format. The feature supports several password management platforms, including Google Password Manager, 1Password, Bitwarden, and Dashlane.

BetaBeacon

September 10, 2026

How to Fix “Failed to Detect Location (12)” in Pokemon GO on iOS and Android

Pokémon GO Error 12 can occur due to various reasons such as disabled location permissions, weak GPS signals, or outdated game systems. To fix this error, users can use tools like iMyFone AnyTo, which supports both iOS and Android platforms and offers various modes for players to choose their destination or simulate movement. Resolving Error 12 involves specific steps based on the device's operating system, such as checking location services for iPhone users or allowing precise location for Pokémon GO for Android users.

Winsage

September 10, 2026

Majority of TPU Users Don’t See Microsoft’s Promised Windows 11 Improvements

Microsoft committed to overhauling Windows 11 to improve performance and stability. A poll with nearly 33,000 responses showed that 43.4% of users noticed no improvements, while 38.1% reported a worsened experience. Issues included bugs from updates, such as the August update resetting custom cursors and gameplay problems linked to RGB peripherals. Only 12.6% of participants reported minor improvements, and 6.3% experienced significant enhancements. Windows 11 runs on about half a billion PCs, leading to varied user experiences. At IFA 2026, Microsoft emphasized its commitment to user feedback and announced plans to improve performance through the Low Latency Profile, but the effectiveness of these changes remains uncertain.