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IT Services Circle

Delivering cutting-edge internet insights and practical learning resources. We're a passionate and principled IT media platform.

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Recent Articles

Latest from IT Services Circle

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IT Services Circle
IT Services Circle
Oct 26, 2026 · Information Security

Java CVE-2026-91403: eMudhra CA Private Key Leak Breaks HTTPS Trust — Upgrade & Mitigation Guide

Oracle's Security Alert for CVE-2026-91403 reveals eight eMudhra intermediate CA private keys were leaked, causing Java's trust store to accept forged certificates. Affected versions include Oracle Java SE 8u511, 11.0.33, 17.0.21, 21.0.13, 25.0.5, 27.0.1 and GraalVM variants. Remediation requires upgrading to patched builds and restarting JVMs, plus either removing the compromised root certificates from cacerts or enabling revocation checking via JVM flags. Older unsupported JDKs likely share the risk.

CA certificateCVE-2026-91403HTTPS trust
0 likes · 7 min read
Java CVE-2026-91403: eMudhra CA Private Key Leak Breaks HTTPS Trust — Upgrade & Mitigation Guide
IT Services Circle
IT Services Circle
Oct 25, 2026 · Industry Insights

4 Open-Source Gems: AI Controls iPhone via $7 ESP32, Photo Geolocation, Claude Anti-Ban, iOS on Mac

This article showcases four notable GitHub projects: an ESP32-S3 board that lets a vision LLM operate an iPhone, a tool that geolocates photos using visual clues and satellite evidence, a local identity manager to prevent Claude account bans, and an iOS compatibility layer for running iPhone games on Mac with keyboard and controller mapping.

Claudeanti-banesp32
0 likes · 7 min read
4 Open-Source Gems: AI Controls iPhone via $7 ESP32, Photo Geolocation, Claude Anti-Ban, iOS on Mac
IT Services Circle
IT Services Circle
Oct 25, 2026 · Information Security

CA Private Key Was Just '4': How eMudhra's Script Bug Broke Global HTTPS Trust

Indian CA eMudhra generated intermediate certificate private keys as trivial integers like 4 due to a script bug, allowing anyone to forge trusted certificates; major browsers and OSes emergency-revoked trust, impacting 60M+ certificates and forcing developers to audit trust stores and key generation practices.

CA securityHTTPS securityMitM attack
0 likes · 12 min read
CA Private Key Was Just '4': How eMudhra's Script Bug Broke Global HTTPS Trust
IT Services Circle
IT Services Circle
Oct 24, 2026 · Information Security

PHP Interpreter Flaws Allow Pre-Login RCE and Credential Theft

This article explains two critical PHP interpreter vulnerabilities (CVE-2026-109618 and CVE-2026-109619) that allow unauthenticated remote code execution and sensitive data leakage via memory exhaustion and use-after-free flaws, affecting mod_php and PHP-FPM deployments powering WordPress, Drupal, and Joomla.

CVE-2026-109618CVE-2026-109619PHP
0 likes · 11 min read
PHP Interpreter Flaws Allow Pre-Login RCE and Credential Theft
IT Services Circle
IT Services Circle
Oct 23, 2026 · Backend Development

Eino: ByteDance's Go-Native AI Framework for Production-Grade Agents

This article provides a comprehensive analysis of Eino, ByteDance's Go-native AI application framework, detailing its four-layer architecture, type-safe graph orchestration, automatic streaming handling, Agent runtime with ReAct loop, middleware support, interrupt/resume capabilities, code examples, comparison with LangChain, pros and cons, and recommended use cases for Go microservices.

AI frameworkAgentCloudWeGo
0 likes · 18 min read
Eino: ByteDance's Go-Native AI Framework for Production-Grade Agents
IT Services Circle
IT Services Circle
Oct 23, 2026 · Fundamentals

Ethernet Cable vs. Network Cable: What's the Real Difference?

This article explains the technical differences between network cables and Ethernet cables, defines patch cables, compares cable categories like Cat5e, Cat6, and Cat6A, discusses solid vs. stranded conductors and crossover cables, and offers practical buying advice for home and enterprise networks.

Cat5eCat6Cat6A
0 likes · 9 min read
Ethernet Cable vs. Network Cable: What's the Real Difference?
IT Services Circle
IT Services Circle
Oct 21, 2026 · Information Security

Calling JavaScript Functions Without Parentheses: Prototype Pollution & V8 Exploit

This article explains how to invoke JavaScript functions without parentheses by exploiting prototype chain pollution and V8's non-standard Error.prepareStackTrace hook, demonstrating a technique that bypasses security filters and serves as a deep dive into JavaScript's implicit conversions and prototype mechanics.

Error.prepareStackTraceJavaScriptPrototype Chain
0 likes · 10 min read
Calling JavaScript Functions Without Parentheses: Prototype Pollution & V8 Exploit