validation Archives

Tech Optimizer

June 13, 2025

Postgres and the Lakehouse Are Becoming One System — Here’s What Comes Next

Developers are increasingly using Postgres for application needs alongside lakehouse technologies for analytics and data science. Postgres has evolved into a versatile operational database suitable for various applications, while lakehouse technologies enable organizations to manage and analyze large-scale data efficiently. There is a growing synergy between these systems, although they often operate in silos managed by different teams. An emerging architectural paradigm views Postgres and lakehouses as complementary layers within a modular framework to address both operational and analytical requirements. Historically, OLTP systems were used for transactions and OLAP systems for analysis, but this model is shifting. Scenarios such as financial applications requiring real-time risk reports and SaaS applications calculating usage metrics are becoming standard. Effective communication between product-engineering teams managing operational systems and data teams overseeing lakehouse services is essential for enhancing system resilience. A trend called operational medallion architecture incorporates bronze, silver, and gold layers for real-time and user-facing systems. The bronze layer consists of raw data, the silver layer contains cleaned data in Postgres for real-time analytics, and the gold layer features pre-aggregated data for low-latency experiences. Each layer is queryable, allowing for bidirectional data movement between S3 and Postgres. Key developments facilitating the integration of operational databases and lakehouses include the maturation of Iceberg as a flexible table format, the evolution of Postgres with support for various data types and querying capabilities, and a growing demand for composability among developers. The market is moving towards modular, open, and developer-friendly architectures that integrate operational and analytical layers. Future data infrastructure will focus on interconnected components and coherent modern data architecture that serves both operational and non-operational use cases seamlessly.

Winsage

June 12, 2025

Microsoft Resolves Windows Server 2025 Restart Bug Disrupting Active Directory Connectivity

Microsoft released updates in June 2025 to address critical issues affecting Windows Server 2025 domain controllers, specifically authentication failures and network connectivity problems. The updates, encapsulated in KB5060842, resolved issues stemming from security update KB5055523, which altered certificate validation methods for Kerberos authentication. This change led to logging errors for self-signed certificates and affected Windows Hello for Business Key Trust deployments. Additionally, a separate issue prevented domain controllers from managing network traffic correctly after restarts, causing them to revert to standard firewall profiles. Microsoft provided a temporary workaround for administrators to manually restart network adapters until a permanent fix was implemented. The June updates addressed a total of 66 vulnerabilities, including 10 rated as Critical, and recommended immediate installation. Microsoft advised against setting the AllowNtAuthPolicyBypass registry key to ‘2’ for domain controllers using self-signed certificates until the latest updates were applied.

Winsage

June 11, 2025

Microsoft fixes Windows Server auth issues caused by April updates

Microsoft has resolved an authentication issue that arose after the April 2025 security updates on Windows Server domain controllers, primarily affecting Windows Server 2016, 2019, 2022, and 2025. The problem, acknowledged in early May, involved difficulties with Kerberos logons or delegations reliant on certificate-based credentials due to the April monthly security update (KB5055523). This issue could lead to authentication failures in environments using Windows Hello for Business Key Trust or Device Public Key Authentication, impacting various software solutions. Microsoft released cumulative updates to fix these issues and recommended installing the latest security updates. For those still facing problems, a temporary registry adjustment was advised. The authentication issues were linked to security enhancements addressing a high-severity vulnerability (CVE-2025-26647) that could allow privilege escalation through an input validation flaw in Windows Kerberos. Microsoft had previously addressed related authentication issues in April and issued emergency updates in November 2022 for Kerberos sign-in failures affecting Windows domain controllers.

AppWizard

June 7, 2025

ISKP Magazine Questions Encryption Claims Of Messaging App, Cautions

The latest edition of "Voice of Khurasan" critiques Gem Space, a new social media platform attracting Islamic State Khorasan Province (ISKP) members, highlighting security vulnerabilities. The article warns against migrating from Telegram to Gem Space due to concerns over the platform's closed-source nature, unspecified encryption protocols, lack of end-to-end encryption confirmation, unclear ownership, and absence of transparency reports. It suggests that claims of 40+ million downloads may be exaggerated, pointing to a lack of independent validation of the platform's security. The article emphasizes the importance of informed decision-making regarding digital security.

Tech Optimizer

June 2, 2025

Streamline code conversion and testing from Microsoft SQL Server and Oracle to PostgreSQL with Amazon Bedrock

Organizations are transitioning from legacy database systems like Microsoft SQL Server and Oracle to open-source alternatives such as PostgreSQL to reduce costs and enhance scalability. This migration process involves several steps, including schema conversion, business logic transformation, data migration, application changes, and performance tuning. Amazon Bedrock aids this process by automating schema and code conversion, data transformation, identifying code compatibility issues, and generating test cases for validation. The migration challenges include adapting database objects to PostgreSQL's syntax, converting stored procedures and functions, executing ETL processes for data accuracy, modifying application code, and optimizing performance. Amazon Bedrock utilizes generative AI to simplify these tasks, significantly reducing manual effort and errors. An example of code conversion from Microsoft SQL Server to PostgreSQL is provided, illustrating how to convert a stored procedure into a PostgreSQL function while generating corresponding test cases. The process involves using the Amazon Bedrock chat interface to submit prompts for conversion and validation. To support the migration, table creation scripts for the Employees and SalaryUpdateLog tables are included, along with test data that covers various employee scenarios. This data allows for comprehensive testing of the converted function, ensuring it correctly applies salary updates based on specified criteria.

Winsage

June 2, 2025

‘Two firm promises of USB-C on Windows 11’ — How Microsoft plans to eliminate connectivity confusion

USB-C ports are standard on contemporary Windows laptops, but not all deliver the same performance. A recent blog post by Microsoft revealed that 27% of Windows PCs with USB4 ports experience a "limited functionality" notification when connecting peripherals. This issue arises from inconsistent USB-C implementations by manufacturers, often leaving users unaware of their ports' capabilities. To address these challenges, Microsoft is updating the Windows 11 Hardware Compatibility Program (WHCP) to ensure that laptops shipping with Windows 11 version 24H2 will have WHCP certification. This certification guarantees universal USB data, charging, and display support across all USB-C ports, and full compatibility for USB4 ports with 40Gbps performance with Thunderbolt 3 and USB4 peripherals. The WHCP will enforce minimum capabilities for each USB-C version, requiring USB-IF certified silicon in certified laptops, ensuring USB Power Delivery capabilities for all ports, and mandating DisplayPort Alt Mode for external display support. Additionally, a new requirement for Microsoft's driver stack will ensure PCs receive the latest USB driver updates. USB4 introduces two performance tiers: 40Gbps and 80Gbps. New laptops with USB4 connections at 40Gbps will be required to ensure compatibility with USB4 and Thunderbolt 3 accessories. WHCP certification will also apply to 80Gbps USB4 ports, mandating 80Gbps transfer speeds and a specific mode for high-resolution displays. The WHCP certification will be enforced through a Hardware Lab Kit, incorporating user feedback and automated testing.

Winsage

May 30, 2025

Microsoft sees Windows Update as the unified platform for all software updates

The orchestrator manages updates by scheduling them based on user activity, system performance, and power availability. It supports MSIX/APPX and Win32 applications and provides custom installer support through additional executable packages. Users receive updates via Windows notifications, and a consolidated update history is available in system settings. The orchestrator aims to deliver a consistent management experience across Windows 11 products, offering centralized logs and policy enforcement for IT teams. However, enterprises with hybrid or air-gapped systems require robust support for localized deployment. The unified platform may raise compliance concerns for organizations with strict regulatory requirements, necessitating clear accountability between independent software vendors and Microsoft, along with pre-deployment validation.

Winsage

May 29, 2025

Securing Windows Endpoints in 2025 Enterprise Environments

In 2025, 61% of organizations worldwide have adopted Zero Trust initiatives, up from 24% in 2021. Microsoft's Zero Trust framework centralizes security policy enforcement through the cloud, with integrated solutions like Microsoft Defender for Endpoint. AI is now a critical component of endpoint security, enabling systems to detect irregularities and autonomously isolate compromised devices. Microsoft introduced Quick Machine Recovery (QMR) to allow IT administrators to fix unbootable PCs remotely. Windows Server 2025 features enhanced security measures, including advanced algorithms and a customized security baseline with over 350 preconfigured settings. Additionally, 75% of organizations are consolidating security vendors, favoring comprehensive platforms like SentinelOne Singularity and Microsoft Defender XDR. Windows Defender Application Control (WDAC) has been enhanced to better regulate application usage, with Microsoft promoting its adoption over AppLocker.

Winsage

May 29, 2025

Forced E-Waste PCs And The Case Of Windows 11’s Trusted Platform

The process of upgrading Windows operating systems was straightforward until Windows 11, which introduced a new requirement for a Trusted Platform Module (TPM), potentially rendering many capable PCs obsolete. The TPM is used for boot validation and storing biometric data, but it complicates data recovery and may lock out legitimate users. Users have found ways to bypass Windows 11's TPM and CPU restrictions, allowing installation on unsupported hardware. Microsoft’s enforcement of these requirements remains uncertain, raising concerns about system reliability and user access to updates. Many users are opting to stay on Windows 10 while advocating for continued support from developers.

Tech Optimizer

May 24, 2025

Connect Amazon Bedrock Agents with Amazon Aurora PostgreSQL using Amazon RDS Data API

Generative AI applications are being integrated with relational databases, allowing organizations to utilize structured data for training AI models. This integration involves using the RDS Data API with Amazon Aurora PostgreSQL-Compatible Edition and Amazon Bedrock for AI model access and automation. The solution enables natural language queries to be converted into SQL statements, executed against the database, and returns results in a user-friendly format. The architecture includes several steps: invoking the Amazon Bedrock agent with natural language input, generating SQL queries using large language models (LLMs), executing those queries via the Data API, and returning formatted results. Security measures are in place to restrict operations to read-only, preventing modifications that could compromise data integrity. To implement this solution, prerequisites include deploying an Aurora PostgreSQL cluster using AWS CDK and setting up the necessary Lambda functions and IAM roles. The agent is designed to convert natural language prompts into SQL queries and execute them securely. Testing can be conducted through the Amazon Bedrock console or the InvokeAgent API, with options for tracing the agent's steps. Key considerations for this integration include limiting it to read-only workloads, implementing parameter validation to prevent SQL injection, and ensuring comprehensive logging and auditing. For multi-tenant applications, appropriate isolation controls should be established. To avoid future charges, all resources created through CDK should be deleted after use.