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Messaging app Telegram blocked in Russia's Dagestan and Chechnya regions
AppWizard
March 9, 2025

Messaging app Telegram blocked in Russia’s Dagestan and Chechnya regions

The messaging app Telegram has been blocked in Russia's Dagestan and Chechnya regions due to security concerns, as announced by Dagestan's digital development minister, Yuri Gamzatov. The decision followed recommendations from law enforcement agencies, particularly in response to unrest at Makhachkala airport earlier this year. Since early 2024, users in parts of the North Caucasus have faced service disruptions on Telegram, and Gamzatov suggested considering the VK messenger as an alternative. The unrest at Makhachkala airport on October 29, 2023, was caused by a flight arrival from Israel, leading to mass riots that resulted in over 24 million rubles in damages and injuries to 23 officials.
How to Disable Microsoft Defender for a Specific App in Windows
Winsage
March 7, 2025

How to Disable Microsoft Defender for a Specific App in Windows

Microsoft Defender can obstruct the functionality of certain applications for Windows users. Users can selectively disable Microsoft Defender for specific apps by following these steps: 1. Open Windows Security via the Start menu. 2. Navigate to the 'Virus & threat protection' section. 3. Click on 'Manage settings' under 'Virus & threat protection settings.' 4. Select 'Add or remove exclusions' in the 'Exclusions' section to specify the app or file to exempt. 5. Save the changes to allow the app to run without interference. This process helps maintain a balance between security and functionality.
The Future of PostgreSQL: How a 64-bit Transaction Counter Solves Scaling Issues
Tech Optimizer
March 4, 2025

The Future of PostgreSQL: How a 64-bit Transaction Counter Solves Scaling Issues

PostgreSQL uses Multi-Version Concurrency Control (MVCC) to manage concurrent data access, allowing multiple users to interact with the database simultaneously. It tracks transactions with unique identifiers called transaction IDs (xids), which can be retrieved using the txid_current() function. Each database record has system fields xmin and xmax to indicate the transaction ID that inserted or deleted the record. Prior to version 8.2, PostgreSQL faced issues when the transaction counter approached its maximum of approximately 4 billion transactions, which could lead to crashes. Version 8.2 introduced a mechanism to reset the transaction counter, allowing it to cycle, but this required ongoing background vacuuming to prevent disruptions. High transactional workloads can exceed 49,710 transactions per second, leading to daily transaction counter wraps in high-demand environments. The VACUUM FREEZE process, which freezes older records, relies on the difference between the current and oldest transaction IDs not exceeding 232 and requires regular execution. Long-running transactions can hinder this process, and reaching the transaction ID limit within a day is possible on modern hardware. Transitioning to a 64-bit integer for the transaction counter has been proposed as a solution, expanding the transaction ID space to 18 quintillion (2^64). Postgres Professional developed a 64-bit transaction ID over several years, which has been adopted by various PostgreSQL forks. This implementation has been stable for over five years, providing a significant increase in available IDs and extending the lifespan of the system before exhausting IDs. The proposal for this patch was initially rejected by the community due to its complexity, but efforts to integrate it continue.
CISA Alerts on Active Exploitation of Cisco Small Business Router Flaw
Winsage
March 4, 2025

CISA Alerts on Active Exploitation of Cisco Small Business Router Flaw

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a critical alert about a command injection vulnerability (CVE-2023-20118) affecting Cisco Small Business RV Series Routers, which are end-of-life. This vulnerability, rated 6.5 on the CVSSv3.1 scale, allows authenticated attackers to execute arbitrary commands with root privileges. The affected models include RV016, RV042, RV042G, RV082, RV320, and RV325, running firmware versions released before April 2023. Cisco will not provide patches for these devices. CISA mandates that federal agencies either implement mitigations or stop using the routers by March 24, 2025. Private organizations are also encouraged to address the issue, especially due to exploitation attempts linked to the PolarEdge botnet campaign. Administrators are advised to restrict administrative access, monitor logs for unusual activity, and consider decommissioning affected devices. The continued use of unpatched routers poses significant risks to critical infrastructure, particularly in small business and remote work environments.
WhatsApp down as thousands of app users struggling to send messages
AppWizard
March 1, 2025

WhatsApp down as thousands of app users struggling to send messages

On a Friday afternoon, WhatsApp experienced significant outages affecting at least 68,000 users globally, along with issues on Facebook Messenger, Facebook, and TikTok. The disruptions began around 3:12 PM, primarily impacting users in London, Manchester, and Glasgow. Users reported difficulties sending messages (55%), server connection issues (34%), and problems with the app (11%). Many turned to X (formerly Twitter) to discuss the outage. By 6 PM, WhatsApp confirmed the issue had been resolved. This incident follows previous outages at Meta, including one in December affecting over 100,000 users and another in October 2021 that left billions without access for nearly six hours, resulting in a significant financial loss for Mark Zuckerberg.
Whatsapp, Facebook Messenger Down? Users Report Massive Meta Outage
AppWizard
February 28, 2025

Whatsapp, Facebook Messenger Down? Users Report Massive Meta Outage

On Friday, WhatsApp and Facebook Messenger experienced significant disruptions, resulting in over 4,000 issues reported in the U.S. and 10,000 in India for WhatsApp, while nearly 1,000 complaints were logged for Facebook Messenger in the U.S. The United Kingdom had over 7,500 reports of WhatsApp issues, with major cities like London, Manchester, and Glasgow being heavily affected. Among those reporting problems, 59% could not send messages, 22% faced server connection issues, and 19% experienced app-related difficulties. This incident mirrored a previous outage in December where over 105,000 complaints for Facebook, 70,000 for Instagram, and more than 12,000 for WhatsApp were recorded.
Facebook Messenger is down worldwide as
AppWizard
February 28, 2025

Facebook Messenger is down worldwide as

Users worldwide are experiencing significant disruptions with Facebook Messenger, starting around 10:30 AM ET, affecting regions including the United States, the United Kingdom, Europe, Australia, South America, and Asia. Facebook Messenger has about one billion users as of early 2025. Meta's other messaging platform, WhatsApp, faced similar issues during this outage, with over 8,200 complaints logged on Downdetector in the United States. This incident is reminiscent of a previous outage four years ago that lasted seven hours and resulted in a significant revenue loss, attributed to a faulty update. During that outage, access systems at Facebook's Menlo Park campus were also disrupted. The current situation has led to user frustration and raised concerns about the reliability of major tech firms' infrastructure.
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