https://vckie.github.io/ Personal Blog to stay updated. 2026-09-18T01:51:59+00:00 Vigneshwaran J https://vckie.github.io/ Jekyll © 2026 Vigneshwaran J /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-07-31T16:00:00+00:00 2026-07-31T16:00:00+00:00 https://vckie.github.io/posts/AI-Exposure/ Vigneshwaran J

Disclaimer: All sensitive organizational data, specific product names, and internal metrics in this post have been generalized, anonymized, or redacted for security and confidentiality concerns. Executive Summary As generative AI tools like ChatGPT, Claude, Gemini, and others become ubiquitous in the workplace, organizations face a new and growing security challenge: employees inadvertently ...

2026-02-08T00:00:00+00:00 2026-02-08T00:00:00+00:00 https://vckie.github.io/posts/installing-nessus-on-ubuntu/ Vigneshwaran J

Quick reference notes for installing Nessus on Ubuntu via .deb package, and for cleanly removing it afterward. Download Grab the appropriate .deb package from the official Tenable downloads page: https://www.tenable.com/downloads/nessus Install Install the downloaded package with dpkg: dpkg -i Nessus-10.12.1-ubuntu1604_amd64.deb Start the Nessus service: systemctl start nessusd.service...

2025-10-25T01:30:00+00:00 2025-10-25T01:30:00+00:00 https://vckie.github.io/posts/SIEM-rules-flaw/ Vigneshwaran J

A critical detection gap that may have been lurking in your environment for years, See How Attackers Bypass Email Detection Rules Using Substring Whitelisting Introduction During a routine review of phishing detection rules in a SIEM environment, I discovered something that stopped me in my tracks — a fundamental flaw in how email-based whitelisting was implemented. The logic had been runni...

2025-10-20T01:30:00+00:00 2025-10-20T01:30:00+00:00 https://vckie.github.io/posts/The-Browser-Extension-Blind-Spot-Uncovering-Hidden-Security-Risks-in-Enterprise-Environments/ Vigneshwaran J

Executive Summary Browser extensions have become ubiquitous productivity tools, but they also represent one of the most overlooked attack vectors in enterprise security. A recent three-month investigation into browser extension installations across corporate endpoints revealed a concerning pattern: employees routinely installing VPN tools, cryptocurrency wallets, deprecated add-ons, and even c...

2025-10-12T10:30:00+00:00 2026-09-18T01:51:06+00:00 https://vckie.github.io/posts/Domain-Expiry-Monitoring-with-n8n-Automated-Notifications/ Vigneshwaran J

In this blog, we’ll explore how to build an automated domain expiry monitoring system using n8n. This workflow tracks your domain names, checks their expiration dates using RDAP (Registration Data Access Protocol), and sends email alerts when renewal is due. Sample Notification: Overview Managing multiple domain names can be challenging, especially when it comes to tracking expiration date...