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Denis Kasak
Zagreb, Croatia
A security researcher and developer from Croatia. Owner of Narsil, a computer security consultancy. Consulting as a Senior Security Researcher for Element and matrix.org. My interests are varied but include cryptography, reverse engineering, penetration testing, web security, secure coding, functional programming, type systems and constructive mathematics.
CodersRank Score
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312.3
CodersRank Rank
Top 3%
Based on:
59 eventsTop 50
CSS
Developer
Croatia
Top 5
Python
Developer
Croatia
Top 5
Rust
Developer
Croatia
Highest experience points: 0 points,
0 activities in the last year
Python
128.2
exp.
Rust
73
exp.
CSS
9.6
exp.
C++
6.6
exp.
HTML
4.8
exp.
Haskell
66.9
exp.
List your work history, including any contracts or internships
Narsil
Feb 2021 - Dec 2021 (10 months)
Founder
Founder of Narsil, an information security consultancy firm offering security auditing, penetration testing and secure coding services.
Element
Dec 2020 - Dec 2021 (1 year)
Senior Security Researcher
Security research focused on the matrix.org protocol and Matrix client and server security, with a special emphasis on cryptography.
Freelance
Jan 2015 - Dec 2021 (6 years 11 months)
Freelance Security Researcher
Participating in various bug bounties (on HackerOne, YesWeHack, Intigriti and other platforms). Worked on a wide array of programs involving native application exploitation, web and Android application security, fuzzing, cryptography and more.