Marek Tamaskovic
Product Security Engineer at DNAnexus
Brno, South Moravia, Czechia
Summary
👤
Senior🎓
Top SchoolMarek Tamaskovic is a Product Security Engineer with 11 years of hands-on experience blending software engineering and offensive security across companies like Red Hat, Citadelo, Kiwi.com and DNAnexus. He moves fluidly between secure product development and penetration testing, having maintained critical platform packages at Red Hat and later running web app and infrastructure assessments as an ethical hacker. Marek contributes to impactful open-source security tooling—most notably enhancing USBGuard’s policy and permission features to tighten USB device authorization and harden system behavior. He holds advanced degrees in IT security and is pursuing a PhD researching security and performance of blockchain consensus, bringing a research-driven perspective to practical defensive work. Based in Brno, he pairs deep low-level systems knowledge with a pragmatic threat-hunting mindset, often finding subtle policy and configuration gaps that others miss.
11 years of coding experience
4 years of employment as a software developer
Doctor of Philosophy - PhD, Security and Performance Analysis of Consensus Protocols in Blockchain, Doctor of Philosophy - PhD, Security and Performance Analysis of Consensus Protocols in Blockchain at Brno University of TechnologyMaster's degree, Erasmus - Game dev, Master's degree, Erasmus - Game dev at Tallinn University
English, Slovak, German, Russian
Github Skills (9)
usb-devices10
linux10
security-hardening10
c-language10
cprogramming-language10
security10
blacklist9
cplus9
cpp9
Programming languages (11)
Github contributions (5)
USBGuard/usbguard
Jul 2017 - Feb 2020
USBGuard is a software framework for implementing USB device authorization policies (what kind of USB devices are authorized) as well as method of use policies (how a USB device may interact with the system)
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:8 commits, 14 PRs, 24 comments in 2 years 7 months
Contributions summary:Marek implemented features related to USB device authorization policies and security hardening, core aspects of the usbguard project. They added an option to the `list-rules` command to show devices affected by specific rules, enhancing the tool's functionality. Further contributions include implementing permission checks for policy files and introducing the `match-all` keyword, improving the security and control over the USB device authorization policies. The user's work also involved updating the configuration file parser.
software-frameworkauthorizationsecuritymethodlinux
marektamaskovic/strace2seccomp
Oct 2017 - Feb 2020
strace2seccomp - generates libseccomp policies from strace logs
Contributions:194 commits, 8 PRs, 42 pushes in 2 years 4 months
securitypolicieslogsstrace
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