Alexander Korznikov
Offensive Security Researcher Red Teamer at MuggleSec
Moscow, Moscow City, Russia
Summary
👤
Senior🎓
Top SchoolAlexander Korznikov is an offensive security researcher and red teamer with over a decade of hands‑on experience delivering sophisticated adversary emulation, exploit development, and custom offensive tooling for global clients. Based in Moscow, he has led and built red team services, trained DFIR teams, and executed complex engagements from initial access to data exfiltration while mentoring well‑known security professionals. His background spans vulnerability research at product vendors, enterprise penetration testing, and building closed‑source operational capabilities for clients, with notable open‑source contributions to Impacket—improving Terminal Services tooling, Kerberos flows, and SID resolution. Comfortable operating at both technical and leadership levels, he blends deep practical exploit skills with team building, training, and operational vision.
10 years of coding experience
5 years of employment as a software developer
Bargut, Computers & Electronics, Bargut, Computers & Electronics at ShevahEnglish Course, English Course at The Open University of IsraelAlarm Systems Technician, Alarm Systems Technician at IDF Elbit - Elop DevisionCyber Security Intelligence Professional, Penetration Tester, 93, Cyber Security Intelligence Professional, Penetration Tester, 93 at John Bryce – Hi-Tech CollegeOSCP - Offensive Security Certified Professional, Penetration Testing., OSCP - Offensive Security Certified Professional, Penetration Testing. at Offensive Security
English, Hebrew, Russian, google.translate
Github Skills (8)
python10
impacket10
smb9
dce9
kerberos9
rpc9
drpc9
wmi7
Programming languages (3)
Github contributions (5)
fortra/impacket
May 2022 - Jun 2022
Impacket is a collection of Python classes for working with network protocols.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 6 commits, 5 PRs in 12 days
Contributions summary:Alexander primarily contributed to the `tstool.py` script within the Impacket repository, focusing on Terminal Services manipulation functionalities. Their work included implementing and refining features like tasklist, taskkill, tscon, tsdiscon, and logoff. Furthermore, the user refactored code, addressed kerberos authentication issues and also incorporated SID to Username resolution for enhanced functionality in the tstool utility.
pythonwmipass-the-hashnetconfclasses-python
nopernik/mpDNS
Nov 2018 - Aug 2022
Contributions:25 commits, 26 pushes, 1 branch in 3 years 10 months
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