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Tech Optimizer

July 12, 2026

Running pgvector in production on Amazon Aurora PostgreSQL

Running pgvector on Amazon Aurora PostgreSQL-Compatible Edition offers a vector store with operational capabilities, high availability, and scalability. It is favored for Retrieval Augmented Generation (RAG) workloads transitioning to production, but increased traffic introduces challenges like query latency and memory management. Key operational practices for pgvector workloads include selecting the appropriate index type (HNSW or IVFFlat), establishing a baseline schema, choosing a suitable distance operator, scaling the index through quantization and partitioning, and preparing for churn and observability. The prerequisites for using pgvector include an Aurora PostgreSQL-Compatible cluster with specific PostgreSQL versions and the vector extension enabled. The embedding model used in examples is Amazon Titan Text Embeddings V2, which produces 1024-dimensional embeddings. pgvector supports two Approximate Nearest Neighbor (ANN) index types: HNSW, which is efficient for querying and allows for incremental insertions, and IVFFlat, which is less resource-intensive but requires rebuilding if data changes. There are scenarios where forgoing an index is beneficial, such as small datasets or partitioned datasets requiring 100% recall. A baseline schema for a multi-tenant document store includes creating a table for documents with an embedding vector and establishing indexes for tenant IDs and embeddings using HNSW. The recommended parameters for HNSW include m = 16 and ef_construction = 128. Scaling to millions of vectors involves quantization, tuning HNSW parameters, and partitioning. Aurora Optimized Reads can extend effective cache capacity, and managing index churn is crucial for maintaining performance. Observability metrics include query-level statistics, instance-level metrics, and custom application-defined metrics. To clean up after testing, it is advisable to drop the created indexes and tables, and delete the Aurora PostgreSQL-Compatible cluster and any manual snapshots taken during testing.

AppWizard

July 11, 2026

Palworld studio says delete your old mods before the 1.0 release: ‘Disabling them is not enough’

Palworld is officially launching on July 10 after two and a half years in early access. The game's price will remain unchanged, but players are warned about potential issues with outdated mods. Pocketpair encourages players to back up their save data, delete specific old files, verify game files via Steam, and check that the game launches properly before the update. Players should unsubscribe from and delete any mods and wait for developers to confirm compatibility with the 1.0 version before reinstalling. Issues arising from using mods are not covered by support.

AppWizard

July 11, 2026

Z-TEXT, a zk-SNARKs Blockchain Messenger, Launches Channels, Completing a 4-in-1 Privacy App on BitcoinZ

Z-TEXT has launched its Channels feature, transforming its platform into a comprehensive 4-in-1 privacy ecosystem built on the BitcoinZ blockchain. This system features a four-layer security architecture, including local device encryption, zk-SNARKs shielding, BitcoinZ blockchain settlement, and post-quantum protection. The Channels feature allows creators to maintain control over their broadcasts, with subscribers connecting directly through their wallets, ensuring no central authority can seize or delete subscriber information. Users can restore their channel and its history on any new device using a 24-word seed phrase. Z-TEXT emphasizes the importance of permanence in privacy, contrasting with the trend of automatic message deletion. The application requires no phone number, email, or SIM card for identity verification, relying solely on the 24-word seed phrase. Z-TEXT has been in closed beta without critical vulnerabilities and is preparing for public release on major app stores. The average message fee is approximately [openai_gpt model="gpt-4o-mini" prompt="Summarize the content and extract only the fact described in the text bellow. The summary shall NOT include a title, introduction and conclusion. Text: Z-TEXT, a pioneering zk-SNARKs blockchain messenger, has recently unveiled its innovative Channels feature, marking a significant evolution in its privacy-focused ecosystem. Built on the BitcoinZ blockchain, Z-TEXT is designed with a robust four-layer security architecture that includes local device encryption, zk-SNARKs shielding, BitcoinZ blockchain settlement, and post-quantum protection. The Shift to a 4-in-1 Privacy Ecosystem This launch signifies Z-TEXT's transformation from a conventional messaging platform to a comprehensive 4-in-1 privacy ecosystem. In this new paradigm, users' interactions are securely housed within their wallets rather than in centralized company databases. As Eric Pierrot, the founder of Z-TEXT LLC, aptly notes, "Needing to disappear is proof you can't survive the erosion of time—or what's coming with quantum computing." The Channels feature empowers creators by allowing them to maintain control over their broadcasts. Each subscriber connects directly to the channel through their own wallet, eliminating the risk of a central authority seizing, selling, or deleting subscriber information. This decentralized approach ensures that the integrity of the channel remains intact, regardless of external pressures. Subscribers can receive messages from the broadcaster at a fixed cost, whether the audience comprises ten or ten thousand individuals. In the event of a lost device, users can effortlessly restore their channel and its complete history on any new device using the same 24-word seed phrase that secures their entire account. A Commitment to Privacy and Permanence The launch of Channels builds upon Z-TEXT's commitment to privacy, a principle the company has championed since releasing its privacy manifesto on IPFS and timestamping it on the BitcoinZ blockchain earlier this year. While many messaging applications promote automatic deletion as a feature, Z-TEXT argues that true privacy is rooted in permanence. Pierrot emphasizes, "If your encryption actually holds, the message doesn't need to vanish to stay safe. Eternal memory is our signature—we built for permanence, not for disappearing." Having successfully navigated a closed beta phase without any critical vulnerabilities reported through its on-chain bug bounty program, Z-TEXT is now gearing up for a public release on major app stores, including Google Play and the Apple App Store. The application requires no phone number, email address, or SIM card, with identity verification based solely on a 24-word seed phrase. In addition to its messaging capabilities, Z-TEXT integrates a password manager and a crypto wallet, all while maintaining an impressively low average message fee of approximately [cyberseo_openai model="gpt-4o-mini" prompt="Rewrite a news story for a business publication, in a calm style with creativity and flair based on text below, making sure it reads like human-written text in a natural way. The article shall NOT include a title, introduction and conclusion. The article shall NOT start from a title. Response language English. Generate HTML-formatted content using tag for a sub-heading. You can use only , , , , and HTML tags if necessary. Text: Z-TEXT, a zk-SNARKs blockchain messenger built on BitcoinZ The four-layer security architecture behind Z-TEXT: local device encryption, zk-SNARKs shielding, BitcoinZ blockchain settlement, and post-quantum protection. The launch completes Z-TEXT's shift from messenger to a 4-in-1 privacy ecosystem, where audiences live in subscribers' wallets, not company databases. Needing to disappear is proof you can't survive the erosion of time—or what's coming with quantum computing.”— Eric Pierrot, founder of Z-TEXT LLCSHERIDAN, WY, UNITED STATES, July 11, 2026 /EINPresswire.com/ -- Z-TEXT, a zk-SNARKs blockchain messenger, built on BitcoinZ, has launched Channels, a broadcast feature where the creator—not a platform—controls the channel. Each subscriber holds their own connection to the channel in their own wallet, so there is no central list a company can seize, sell, or delete. Channels joins Z-TEXT's existing privacy ecosystem of shielded messenger, password manager, and crypto wallet, all accessible through a single 24-word seed phrase.A single Channels transaction reaches any number of subscribers, from ten to ten thousand, at the same fixed cost. No company sits between the broadcaster and the audience with the ability to suspend the channel or hand over the subscriber list. If a device is lost, the channel and its full history can be restored on any new device using the same 24-word seed phrase that recovers the rest of the account.The launch extends a position Z-TEXT has held publicly since June, when the company published a privacy manifesto on IPFS and timestamped it on the BitcoinZ blockchain, arguing that permanence, not disappearing messages, is the stronger privacy guarantee. Most messaging apps market automatic deletion as a safety feature. "Needing to disappear is proof you can't survive the erosion of time — or what's coming with quantum computing," said Eric Pierrot, founder of Z-TEXT LLC. "If your encryption actually holds, the message doesn't need to vanish to stay safe. "Eternal memory is our signature—we built for permanence, not for disappearing."Z-TEXT has been operating in closed beta, during which no critical vulnerability was reported through the company's on-chain bug bounty program. The company said it is preparing for public release on major app stores, including Google Play and the Apple App Store.Z-TEXT is a zk-SNARKs blockchain messenger built on BitcoinZ, a blockchain operating since September 10, 2017, that combines Bitcoin's mathematical structure with Zcash's zk-SNARKs privacy technology. The application requires no phone number, email address, or SIM card; identity is derived from a 24-word seed phrase. Z-TEXT combines a shielded messenger, password manager, crypto wallet, and channels in one application, with message fees averaging approximately $0.00003 per message. The company has published its full threat model publicly, including known limitations, and operates a live bug bounty program funded on-chain.eric pierrotZ-Text llccontact@z-text.comVisit us on social media:LinkedInBlueskyYouTubeOther Z-TEXT: The Architecture of Permanent Data Security Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above. You just read: News Provided By July 11, 2026, 18:53 GMT Share This Article EIN Presswire's priority is author transparency. We do our best to weed out false and misleading content. The content above is the sole responsibility of the author who makes it available. If you have any complaints, kindly contact the author above." temperature="0.3"].00003. The company has made its full threat model publicly available, demonstrating transparency regarding known limitations, and continues to operate a live bug bounty program funded on-chain. " max_tokens="3500" temperature="0.7" top_p="1.0" best_of="1" presence_penalty="0.1" frequency_penalty="frequency_penalty"].00003.

Tech Optimizer

July 10, 2026

GigaWiper: Anatomy of a destructive backdoor assembled from multiple malware

Microsoft Threat Intelligence has identified the GigaWiper malware, which has been detected in compromised environments since October 2025. This malware has destructive capabilities and comes in two forms: standalone wiper binaries and larger binaries with backdoor functionalities, both developed in Golang. The standalone wiper operates at the physical disk level, overwriting disk content and removing partition references. The backdoor variant includes the same wiper functionality and adds persistence through a registry key and scheduled tasks, along with command and control communication via RabbitMQ and Redis. GigaWiper can execute various commands, including wiping drives, triggering a Blue Screen of Death (BSOD), file encryption that mimics ransomware behavior, and managing system elements. The malware integrates components from multiple malware families, including wipers and ransomware mechanisms, and has been linked to a previous malware known as FlockWiper. To defend against GigaWiper, organizations are advised to implement security measures such as tamper protection, blocking access to known C2 infrastructure, and utilizing endpoint detection and response solutions. Microsoft Defender provides detections for GigaWiper and related malware, and threat intelligence reports are available for customers to stay informed about threats. Indicators of compromise include specific SHA-256 hashes and IP addresses associated with GigaWiper.

Winsage

July 9, 2026

GDID Windows – Cut the tracker that follows you even through a VPN

In April 2026, the FBI apprehended an individual associated with the Scattered Spider group, who had concealed his online activities using a VPN. His efforts were thwarted by the GDID, a 64-bit Persistent Unique Identifier assigned by Microsoft upon logging into Windows. The GDID is stored in plain text in the registry and is linked to Microsoft’s servers, remaining unaffected by changes to IP addresses or attempts to delete it. Disabling Windows telemetry does not prevent the GDID from being accessed, as it operates through other services. To mitigate its transmission, users can disable certain services and modify the hosts file, although the GDID itself remains stored on Microsoft’s servers. Scripts are available on GitHub to audit and implement changes regarding the GDID. Transitioning to a local account does not guarantee anonymity, and for sensitive activities, using a live Linux system is recommended for better data control.

Winsage

July 8, 2026

Windows 11 cleanup is finally simple with this powerful open‑source tool that strips bloat, boosts speed, and gives you real control

Windows 11 includes built-in tools like Storage Sense, Temporary Files settings, and Storage Recommendations for managing storage. BleachBit is a free, open-source cleanup utility for Windows 11 that removes temporary files, caches, logs, and browsing data without ads. Users can download it via a standard installer or a portable version, with installation possible through the command line. BleachBit features a "Preview" option to estimate storage recovery before deletion and offers recommended cleanup options such as temporary files, logs, and the Recycle Bin. It includes a file shredder for securely deleting sensitive files and can wipe free disk space, although this is not recommended for regular maintenance. BleachBit does not have a Registry cleaner, which can prevent potential system issues. While it does not directly speed up Windows 11, it can free up storage space and resolve some cache-related issues. Users comfortable with Windows 11's built-in tools may not need BleachBit, but it offers greater control for those wanting to manage browser data and temporary files more effectively.

Tech Optimizer

July 8, 2026

Logical replication improvements in Amazon RDS for PostgreSQL 18

PostgreSQL logical replication has operational challenges, such as the absence of generated columns in the replication stream, replication conflicts causing apply worker halts, and lingering replication slots consuming write-ahead log (WAL) files. PostgreSQL 18 introduces enhancements to address these issues, including the ability to include STORED generated columns in the replication stream with a new publication parameter, detailed conflict counters in pg_stat_subscription_stats, automatic invalidation of idle replication slots, and the ability to toggle two-phase commit settings on live subscriptions. To set up a test environment, two PostgreSQL 18 instances (one publisher and one subscriber) are required, along with an EC2 instance for executing commands. The publisher and subscriber must have specific configurations for logical replication, including enabling logical replication and setting appropriate parameters. PostgreSQL 18 allows the replication of STORED generated columns by using the publish_generated_columns parameter. The subscriber must define these columns as regular columns. The new version also enhances conflict monitoring by providing detailed counters for different types of replication conflicts. Parallel streaming is now the default behavior for subscriptions, improving efficiency. The two-phase commit feature can now be modified on existing subscriptions without needing to recreate them. PostgreSQL 18 also introduces automatic cleanup of idle replication slots, which can be configured to invalidate unused slots after a specified duration. Considerations for implementation include ensuring that the subscriber's column types match those of the publisher for generated columns, the requirement for track_commit_timestamp for certain conflict counters, and the fact that sequences are not replicated. Cleanup of replication resources is recommended after testing to prevent unnecessary costs and WAL accumulation.

Winsage

July 7, 2026

Windows 11 rejuvenation list just got longer, with more legacy dialogs headed to WinUI 3

Marcus Ash, head of Design and Research for Windows and Devices at Microsoft, confirmed that the outdated "Switch to a local account" dialog in Windows 11, which references the obsolete Windows 8 "Search charm," is set for an update. This dialog instructs users to use the Search charm, a feature removed since Windows 8.1. Microsoft is actively working on refreshing various classic dialogs within the Windows 11 ecosystem as part of their "rejuvenation" process, which aims to modernize outdated user interface elements. The Run dialog is also being updated, with a hidden modern version prepared for rollout. Additionally, improvements have been made to file operation dialogs, and the File Explorer Properties dialog is next in line for modernization. Microsoft is also addressing other outdated UI elements, including the input method switcher on the login screen. The sound designer for Windows 11 has rejoined the team, suggesting potential updates to system sounds.

AppWizard

July 7, 2026

Why There’s A Briefcase Symbol On Your Android Phone’s Screen (And How To Turn It Off)

Android has introduced a feature called Work Profile that creates a dedicated workspace on devices, separating professional applications from personal ones. This allows users to maintain distinct versions of applications, such as having separate Gmail accounts for work and personal use. The data within the Work Profile is encrypted and accessible only to an organization's IT administrators, ensuring privacy for personal applications and data. Users can identify work apps by a briefcase icon in the status bar, which disappears when the app is closed. To temporarily pause the Work Profile, users can access the Quick Settings panel or navigate to the app drawer and select the Work tab. When paused, work apps will vanish from the app drawer, and notifications will cease. Users can reactivate the Work Profile through the same methods. Additionally, Android's Digital Wellbeing settings allow users to schedule the activation and deactivation of the Work Profile. To permanently disable the Work Profile, users must delete it from the device, which removes all associated work apps and data. This can only be done if the device was originally owned by the user or if ownership has been transferred. The steps include accessing the Settings app, selecting Passwords and accounts, navigating to the Work tab, and tapping on Remove work profile. A factory reset can also delete the Work Profile but will erase personal apps and data as well.

Winsage

July 6, 2026

A Windows 11 bug can eat 500GB of your storage. Here’s how to check

A hidden bug in Windows 11 can consume up to 500 GB of storage due to the CapabilityAccessManager.db-wal file, which should only occupy a few megabytes but can grow significantly on certain systems. Users can check for this issue using applications like TreeSize or by executing a command in the Windows Command Prompt. Microsoft has acknowledged the problem and provided a fix in the optional June 2026 update, with a broader rollout planned for the July Patch Tuesday update. Users are advised not to modify or delete the file to avoid further complications.