About Me
Welcome and thank you for visiting my website. My name is Aleksandar Kovac and I am an IT professional with a focus on cybersecurity and critical infrastructure protection. I specialize in implementing robust security measures and safeguarding critical IT systems. I hold certifications including CompTIA A+, Network+, Security+, CySA+, and TryHackMe SAL1, as well as advanced document analysis training from Frontex. At OPSWAT, I contribute to securing critical infrastructure environments and ensuring the resilience of IT/OT systems. I am also a passionate Linux and open-source software enthusiast, exploring and advocating for the power of open-source technologies.
Feel free to explore my write-ups, insights, and other resources that I’ve gathered along the way.
My Certifications
Connect with me on LinkedIn
Writeups
Technical Articles
- Monitoring SSH Authentication with Splunk
- Using Suricata for Threat Detection and Response
- Enhancing Security With Fail2ban
- Using Auditd For System Monitoring
- Linux Kernel Modules: Security Analysis for Analysts and Defenders
- Capturing Memory on Linux Systems for Forensic Analysis
- Using wxHexEditor to Explore File Structures
- Using Nmap for Network Reconnaissance
- Using chkrootkit and rkhunter for Linux Rootkit Detection
- Using Firejail to Safely Test and Analyze Applications on Linux
- Scanning Web Servers with Nikto
- Using OpenVAS for Vulnerability Scanning on Linux
- Detecting Malicious Persistence in Shell Profiles on Linux
- Finding and Analyzing Rogue Network Connections on Linux
- Investigating Reverse Shell Activity on Linux
Career Journey in Law Enforcement
Before moving to The States and transitioning my career, I spent 10 years as a law enforcement officer in Croatia. I find it rewarding to leverage my past experiences in a way that keeps people safe and makes a difference.
2009: Greenhorn in action!
2019: Sharing the spotlight :)