Grivyonx Intelligence Hub
Zero-days, ransomware, data breaches and active exploitation, explained with practical defence advice.
As digital threats evolve with unprecedented speed, a dangerous gap is emerging between the agility of cybercriminals and the fragmented responses of law enforcement agencies.
By Gourav Rajput
A Black Hat 2026 researcher presented a proof‑of‑concept chain that gave command‑and‑control style access to ChatGPT’s sandbox, revealing that isolation can be bypassed with clever exploits. These findings highlight the urgent need for stronger AI security measures and continuous monitoring.
By Gourav Rajput
Former DNC security leaders reveal how executive backing and unconventional tactics shaped a security-first mindset. Explore the blend of strategy and humor that protected political operations.
By Gourav Rajput
Researchers have uncovered a fresh side‑channel technique that leverages hardware interrupt timing to slip past existing Spectre v2 defenses on both Intel and AMD processors. The method, dubbed INTERRUPT INJECTION, allows an unprivileged Linux program to re‑poison a CPU’s branch predictor after mitigation routines have supposedly secured it, potentially leaking sensitive data. This discovery highlights a subtle timing window that current software patches may not fully close, prompting a reevaluation of how branch‑prediction mitigations are applied in modern kernels.
By Gourav Rajput
A recent investigation uncovered a critical flaw in the JavaScript cryptography library CryptoJS that has led to millions of dollars in losses. The issue stems from a poorly designed random number generator used to create wallet recovery phrases, affecting five popular wallet applications. On‑chain analysis reveals at least two theft events since late May, with a lower‑bound loss of $5.7 million.
By Gourav Rajput
Apple բազմաթիվ iCloud Private Relay, launched with iOS 15, was designed to protect user privacy WITHOUT Apple or any third‑party seeing the originating IP. However, a newly discovered flaw in the WebKit proxy layer can reveal the real IP address behind the double‑hop architecture. This article explains the mechanics of the flaw, its consequences, and how users and security teams can respond. The vulnerability stems from a bypass that enables malicious websites to force Safari to use the first relay directly, thereby exposing the user’s diplomacy to the attacker. Understanding how this works is essential for IT professionals and power users who rely on Apple’s privacy ecosystem.
By Gourav Rajput
A critical security flaw has been identified in Zbtlink routers, where factory-shipped firmware contains a backdoor granting root access to unauthorized users.
By Gourav Rajput
A federal court in Alexandria, Virginia has handed down a 16-year prison sentence to Maksim Silnikau, the architect behind the Ransom Cartel ransomware-as-a-service operation. The conviction marks a significant victory for international law enforcement agencies combating the growing threat of organized cybercrime syndicates that lease malicious software to affiliates worldwide.
By Gourav Rajput
The U.S. Cybersecurity and Infrastructure Security Agency has issued an emergency advisory regarding a critical remote code execution vulnerability in JetBrains TeamCity. CVE-2026-63077, a deserialization flaw with a CVSS score of 9.8, is being actively exploited in the wild against on-premise deployments. Organizations running vulnerable versions must apply patches immediately to prevent unauthorized access and potential system compromise.
By Gourav Rajput
Cascading Style Sheets have evolved from simple design tools into potent attack vectors capable of stealing data directly from webmail interfaces. Researchers demonstrate that malicious CSS can exploit rendering engines to exfiltrate tokens, contacts, and message content without user interaction. This article explores the mechanics, real-world impact, and why many vendors remain unprepared.
By Gourav Rajput
A vast click‑bait infrastructure with more than 250 front‑end domains has begun using browser fingerprinting to decide which macOS users will see a malicious download offer. The technique lets attackers hide the malware from automated scanners while still luring real victims. Microsoft’s Threat Intelligence team uncovered the shift after weeks of monitoring the network, revealing a sophisticated blend of obfuscation and targeted delivery.
By Gourav Rajput
In the world of open‑source software, npm packages avei the lifeblood of countless projects. New research reveals a stealthy method called NullReceiver that hides C2 server IPs in fake Ethereum transfer addresses, turning the blockchain into a covert dead‑drop. This post dissects how the technique works, why it is a serious threat to developers and security teams, and offers practical measures to defend against it.
By Gourav Rajput
Security researchers have uncovered a critical memory corruption bug in the Linux kernel's Open vSwitch datapath, tracked as CVE-2026-64531. The flaw, dubbed OVSwrap, enables ordinary local users to gain root privileges on a wide range of default‑configured distributions. A ready‑to‑use exploit is already available for roughly 800 kernel builds, underscoring the urgency of patching.
By Gourav Rajput
A sophisticated phishing toolkit dubbed Kali365 is actively targeting United States organizations by weaponizing Microsoft's legitimate device authorization flow. Unlike traditional credential harvesting, this technique tricks users into approving attacker-generated device codes on Microsoft's authentic login portal, handing over valid access and refresh tokens. This grants threat actors persistent entry to email, SharePoint, and Azure resources without ever touching a password.
By Gourav Rajput
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has urgently updated its Known Exploited Vulnerabilities (KEV) catalog with three new entries confirmed to be under active attack. These include high-severity flaws in widely used platforms such as Langflow, Apache Tomcat, and SolarWinds N-central. Organizations are strongly advised to apply patches immediately to prevent potential breaches.
By Gourav Rajput
Fortinet’s FortiGuard Labs uncovered a prolonged supply‑chain breach of QuickFox VPN, where a trojanized Windows installer delivered the FDMTP backdoor. The attack, ongoing since August 2025, highlights the risk of compromised software pipelines.
By Gourav Rajput
The commercial phishing‑as‑a‑service toolkit known as Greatness has recently incorporated device code phishing, a tactic that exploits the OAuth 2.0 Device Authorization Grant to bypass multi‑factor authentication. This development marks a significant shift in how threat actors can harvest credentials and tokens without directly confronting traditional security controls.
By Gourav Rajput
A malicious npm worm called Keyv-Linked compromised hundreds of packages, including Claude Code and VS Code. This article explores its spread, impact, and how to protect your projects.
By Gourav Rajput
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