Sergey Grishuk | Tech Lead & System Architect

Linux/Android Internals • Secure Infrastructure • ex-Technion Lecturer

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Core Competencies


Secure Architecture Design

Designing scalable, resilient systems with security baked in from the first line of code. Expertise in threat modeling complex distributed architectures and preventing logic flaws.

DevSecOps & Infrastructure

Building CI/CD pipelines that empower developers to ship faster without breaking security. Transforming manual bottlenecks into automated engineering standards using Docker and Linux internals.

Technical Leadership

Leading engineering teams through mentorship, code reviews, and setting high technical standards. Turning business requirements into robust technical roadmaps.

System Internals & Research

Deep understanding of OS internals (Linux/Android) to optimize performance, debug complex production issues, and harden systems against sophisticated vectors.

Posts


A Deep Dive into Website Protection with fail2ban, Nginx, and ModSecurity

Enterprise security doesn't have to come with a six-figure price tag. This practical guide shows you how to build a formidable defense for your website using powerful, free, and open-source tools. Learn to configure fail2ban, Nginx, and ModSecurity to protect against real-world attacks.

DDoS Firewall WAF open-source fail2ban nginx ModSecurity Linux Server Hardening Web Security

Beyond Cookies: Are You Aware of How Much Data Your Website is Really Collecting?

Discover how cookieless tracking and browser fingerprinting create hidden business risks. Learn about GPU, CPU, and WebRTC data collection and how to protect your site.

Web JavaScript fingerprinting data collection privacy

Get In Touch


I'm always open to connecting with other professionals in the field. Feel free to reach out.

sergey@grishuk.co.il