Grivyonx Intelligence Hub
Zero-days, ransomware, data breaches and active exploitation, explained with practical defence advice.
The takedown of LockBit wasn't just a technical victory; it was a psychological operation that turned the crime syndicate's greatest asset—its affiliate network—into its fatal liability. By shattering the trust between the core developers and their partners, Operation Cronos achieved what pure code analysis could not.
By Gourav Rajput
Confidence in fully autonomous security platforms is declining as organizations realize that blind reliance on AI can create blind spots. This article examines why trust is eroding, how attackers exploit known policies, and what steps can restore a balanced, human‑centric security approach.
By Gourav Rajput
A public exploit has been released for a critical pre-authentication code execution vulnerability in vBulletin, allowing attackers to execute arbitrary code without credentials. The flaw affects multiple versions of the popular forum software and underscores the urgency of prompt patching.
By Gourav Rajput
Cybersecurity researchers at Zscaler ThreatLabz have uncovered a sophisticated cyber campaign orchestrated by a threat actor linked to East Asia, specifically targeting government organizations across the Middle East. The operation leverages the widely used messaging platform Telegram as a command and control infrastructure, marking a notable evolution in how adversaries exploit legitimate communication tools for malicious purposes.
By Gourav Rajput
GitHub has introduced a three‑day waiting period for its Dependabot security updater, forcing a pause before pull requests are created for newly published package versions. The pause can be customized via the dependabot.yml file, allowing teams to adjust the delay and improve security review before adopting new dependencies.
By Gourav Rajput
A sophisticated malvertising operation named SourTrade has been quietly targeting cryptocurrency traders since late 2024. Instead of delivering complete malicious payloads, the campaign fragments malware components and forces victims' browsers to reconstruct executable files using the legitimate Bun JavaScript runtime. This novel evasion technique bypasses traditional network inspection and endpoint defenses by never transmitting a complete malicious binary over the wire.
By Gourav Rajput
A critical remote code execution (RCE) vulnerability has been discovered in Alibaba's Fastjson 1.x library, posing a severe threat to Java-based applications.
By Gourav Rajput
The insurance sector faces a paradigm shift in phishing tactics. Attackers no longer just harvest credentials for later use—they now hijack active sessions in real time, rendering traditional defenses obsolete. This article explores the mechanics, implications, and necessary countermeasures for this emerging threat.
By Gourav Rajput
Cl0p ransomware operators are abusing pre-authentication flaws in PTC Windchill and FlexPLM platforms to carry out unauthenticated remote code execution attacks. The campaign combines a WSDL-based information leak with a servlet-level server-side vulnerability to compromise internet-facing enterprise deployments without any credentials. Organizations running exposed instances of these PTC products are urged to patch immediately and restrict external access to critical engineering lifecycle management systems.
By Gourav Rajput
The emergence of the DevMan Ransomware-as-a-Service (RaaS) portal marks a significant shift toward highly organized, centralized cybercrime operations. This platform streamlines the entire lifecycle of a ransomware attack for affiliates.
By Gourav Rajput
Security researcher Yuhang Wu has demonstrated a remote code execution vulnerability in self‑hosted GitLab 18.11.3. The flaw allows Paula‑authentificated users to run arbitrary shell commands by crafting two Jupyter notebooks and requesting a diff. The attack chain requires no administrative or CI runner privileges, making it a low‑effort, high‑impact threat for any organization still running the unpatched version.
By Gourav Rajput
North Korean threat group BlueNoroff has elevated its social engineering playbook with a sophisticated phishing kit that impersonates Zoom and Microsoft Teams. The campaign leverages typosquatted domains and compromised industry contacts to profile cryptocurrency wallets before deploying malicious payloads, representing a dangerous evolution in trust-based attacks targeting the digital asset ecosystem.
By Gourav Rajput
Security researchers have unveiled a new weakness called Certighost that enables a regular Active Directory account to obtain a certificate intended for a Domain Controller. This mis‑issued credential can be leveraged to generate a Kerberos ticket, which in turn can be used to extract the krbtgt secret through DCSync techniques, potentially granting an attacker domain‑wide privileges.
By Gourav Rajput
The Vatican’s official prayer app suffered a critical API flaw that exposed the personal details of more than 700,000 users, including names, emails, locations and device status. The breach raises serious privacy and trust concerns for faith‑based digital services.
By Gourav Rajput
Security researchers from the Kimi K3 team have disclosed multiple zero‑day vulnerabilities in Redis that can be chained to achieve remote code execution. Their findings forced Redis Labs to release seven emergency updates on July 23, covering versions 6.2.22, 7.4.9, 8.6.4, and 8.8.0. The disclosed proof‑of‑concepts (PoCs) reveal complex exploitation paths that rely on the RESTORE command and, in some cases, additional modules such as RedisBloom and the EVAL command. Organizations running these versions are urged to apply the latest patches promptly to close the security gaps.
By Gourav Rajput
A sophisticated threat actor known as Laundry Bear has been observed using a novel technique that requires victims to merely open or preview an email. This "half-click" approach leverages a recently disclosed vulnerability in Zimbra’s mail platform, enabling attackers to infiltrate high‑value organizations across the United States and Ukraine. The campaign underscores the growing trend of exploiting zero‑day flaws in widely used collaboration tools to achieve strategic espionage and data exfiltration.
By Gourav Rajput
<p>A sophisticated Russian espionage group has been identified exploiting a critical vulnerability in Zimbra's webmail client to infiltrate Western email systems. This breach allowed attackers to access sensitive data including recent emails, stored passwords, and two-factor authentication codes.</p><p>The attack, which spanned months, targeted organizations across multiple industries, highlighting vulnerabilities in email infrastructure and authentication protocols.</p>
By Gourav Rajput
A recent investigation reveals that threat actors have repurposed compromised GitHub Actions runners into a distributed attack platform aimed at cPanel and WebHost Manager (WHM) instances. The scheme leveraged ten malicious Packagist versions linked to a PHP developer’s account during a two‑day window in mid‑July. Researchers highlight the ease with which CI/CD infrastructure can be turned into a weapon, warning administrators to tighten runner permissions and monitor unusual package activity.
By Gourav Rajput
