analytics 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.

AppWizard

September 8, 2026

Are Free VPNs for Android Actually Worth Using

A free VPN for Android can improve internet privacy, especially on untrusted networks, but it has limitations, such as not guaranteeing complete anonymity or security. The VPN creates an encrypted tunnel between the device and the server, protecting traffic from local monitoring but not ensuring overall security if poorly implemented. Changing your IP address does not guarantee anonymity, as account logins and tracking technologies can still identify users. Free VPNs may be suitable for low-risk tasks, like occasional browsing on public Wi-Fi, but they do not protect against malware or phishing. Providers often rely on alternative revenue sources, such as advertising or data sharing, which necessitates careful examination of their privacy policies. Free VPNs may have limitations like data caps, slower speeds, and fewer server options compared to paid services. Users should evaluate the provider’s background, privacy policy, permissions, and performance before installation. A paid VPN generally offers better reliability, support, and transparency, making it a safer choice for sensitive activities.

Tech Optimizer

September 7, 2026

Top 10 Best Endpoint Detection & Response (EDR) Solutions in 2026

Endpoint detection and response (EDR) continuously records process, file, registry, and network activity on endpoints, applying behavioral analytics to identify attacker techniques while providing tools for investigation and containment. Several EDR platforms have emerged, each catering to different organizational needs: 1. CrowdStrike: Best overall for its rich telemetry and elite threat intelligence. 2. SentinelOne: Best for autonomous response, featuring strong containment and rollback capabilities. 3. Microsoft Defender for Endpoint: Best value for organizations already using Microsoft 365 E5. 4. Palo Alto Cortex XDR: Best for native data fusion across endpoint, network, and cloud telemetry. 5. Sophos: Best for generalist IT teams due to its user-friendly interface. 6. Trend Micro: Best for server and workload coverage, focusing on cloud and hybrid environments. 7. Bitdefender: Best mid-market value with strong detection capabilities at an accessible price. 8. Trellix: Best for organizations already using Trellix products, offering integrated solutions. 9. Huntress Managed EDR: Best for managed endpoint security, ideal for teams lacking full staffing. 10. Cisco Secure Endpoint: Best for Cisco environments, integrating well with Cisco security solutions. Key differentiators among these platforms include the analyst burden, alert management efficiency, and the impact of retention policies on investigation quality. The evaluation of EDR solutions should consider detection depth, response capabilities, operational costs, and the specific needs of the organization.

AppWizard

September 7, 2026

Here’s what we know about Blink, Russia’s Gen Z location-sharing app that publicly attacks VK’s Max messenger but sends user data to the tech giant

Recent investigations have revealed that the Russian messaging application Blink sends user data directly to VK servers, despite publicly opposing VK. The app continuously tracks users' movements and transmits location data to MyTracker, an analytics system owned by VK, every few seconds. Additionally, Blink's main feature, Blink Maps, is hosted on VK's servers. Eight senior Blink employees and a former CEO have connections to VK, either having transitioned from VK to Blink or still maintaining roles at VK.

AppWizard

September 6, 2026

Google orders Android apps to cut RAM use amid memory crunch

Google has introduced new performance standards for applications on Google Play to improve user experience and device efficiency by reducing memory consumption. Key areas of focus include dynamic memory management, efficient bitmap data utilization, and DEX code optimization. These standards aim to prevent system slowdowns and forced app closures due to insufficient memory. Google will provide tools within the Play Console for developers to monitor memory issues and access analytics through Android Vitals. The new performance thresholds will take effect in February 2027, with non-compliant applications facing publication restrictions. Additionally, all applications with login systems must support a zero-tap sign-in feature for enhanced user convenience and security.

Tech Optimizer

September 4, 2026

Object Storage + WAL: Lakebase Postgres for the agentic era

Agents interacting with traditional OLTP databases face bottlenecks at the storage layer due to data movement required for operations like deploying instances and managing replicas. Object storage solutions, such as Amazon S3, provide a more efficient and cost-effective alternative. The text discusses two OLTP models: data-centric and transaction-centric. The transaction-centric model emphasizes the importance of transaction history, which Postgres retains through its write-ahead log (WAL). The WAL records every modification before it is committed, allowing for the reconstruction of the database state as of a specific point in time. Lakebase Postgres introduces a two-layer architecture separating compute and storage. The compute layer handles SQL operations, while the storage layer ensures data durability and historical integrity. The WAL is streamed to safekeepers for replication, and the pageserver transforms WAL into materialized pages stored in object storage. This architecture allows for efficient read and write operations without direct interaction with object storage during queries. Key features of Lakebase Postgres include branching, which allows agents to create pointers to specific LSNs without copying data; instant restore capabilities that enable point-in-time recovery; time travel queries for accessing historical data; and read replicas that do not require data duplication. The system also supports scaling down idle compute nodes and eliminates the need for separate copies of data for transactional and analytical processing by storing a single durable copy in object storage. Overall, Lakebase Postgres enhances agent interactions with the database by leveraging object storage as a foundational element.

AppWizard

September 4, 2026

I4C warns against malicious Android apps from social media ads

The Indian Cyber Crime Coordination Centre (I4C) has issued an advisory about malicious Android applications disguised as adult-content apps, which are promoted through social media and distributed outside official app stores. The National Cybercrime Threat Analytics Unit (NCTAU) warned that these apps can compromise mobile device security by requesting sensitive permissions and may install additional software without user consent, leading to unauthorized financial transactions. Users are advised to download apps only from trusted sources like the Google Play Store, avoid installing APK files from unverified sources, and refrain from granting accessibility permissions to untrusted applications. Recommendations include regularly reviewing installed apps, keeping Google Play Protect enabled, and monitoring bank accounts for unauthorized activities. Victims of cyber fraud are encouraged to report incidents via the national cybercrime helpline or the government’s reporting portal.

AppWizard

September 3, 2026

Fake porn apps that can hijack your Android phone

The National Cybercrime Threat Analytics Unit (NCTAU) has reported a rise in financial fraud linked to deceptive Android applications that pose as pornography apps. These apps are advertised on social media platforms like Facebook and Instagram under names such as ‘Night Play’, ‘Reloop’, ‘Kyss’, ‘Vimo’, ‘Rivo’, ‘Nexo’, and ‘Vixa’. Users who click on these ads are redirected to websites promising adult content, where they are encouraged to download APK files. Once installed, these apps often request sensitive permissions, particularly Accessibility access, which can allow malware to take control of the device and facilitate financial fraud. Some malicious apps may also install a VPN, rerouting internet traffic through servers controlled by attackers and exposing sensitive data. The malware is primarily promoted through ads linked to pornographic content, redirecting users to phishing websites that prompt APK downloads from non-Google Play sources, often using the “.live” domain extension. After installation, the initial app may download a second malicious package disguised as an update, exploiting the permissions granted to the original app.

AppWizard

September 2, 2026

MHA issues advisory on malicious Android apps used to steal money, take control of phones

Cybercriminals are increasingly using malicious Android applications disguised as pornography apps to take control of users' devices and conduct unauthorized financial transactions. The Indian Cyber Crime Coordination Centre (I4C) has issued a warning about this trend. These apps are often promoted on social media and require users to download APK files from outside the Google Play Store. The National Cybercrime Threat Analytics Unit (NCTAU) has reported a rise in financial fraud linked to these applications, which include names like “Night Play,” “Reloop,” and “Kyss.” Once installed, these apps request sensitive permissions, such as Accessibility access, allowing malware to read screen information, click buttons, enter OTPs or PINs, confirm transactions, and initiate fund transfers, leading to unauthorized access to bank accounts. Additionally, the malware may install secondary applications or a VPN to reroute internet traffic through attacker-controlled servers, exposing sensitive data. These apps may also prevent uninstallation through standard device settings. The NCTAU advises users to only install apps from trusted sources, avoid unknown APK files, refrain from granting Accessibility permissions to unfamiliar apps, regularly review installed applications, and keep their devices updated. Users should monitor bank accounts for suspicious activity and, if compromised, restart in Safe Mode to uninstall malicious apps. If removal is difficult, backing up data and performing a factory reset is recommended. Citizens are encouraged to report fraudulent applications or cybercrime incidents through the national cybercrime helpline 1930 or the government’s reporting portal.