Uriel Kosayev

Security Researcher, Trainer & Speaker | Author of the Antivirus Bypass Techniques book & founder of TrainSec Academy.

@MalFuzzer

Cybersecurity researcher and red teamer who lives both on the offensive and defensive fronts. The author of the “Antivirus Bypass Techniques” book, expert in malware research, reverse engineering, penetration testing, digital forensics, and incident response

Uriel’s publications

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Uriel's Courses
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Courses by Uriel Kosayev

MAoS bundle
$490 or 7 × $73.5

MAoS – Malware Analysis on Steroids

Trainer: Uriel Kosayev
117 Lessons |
17:30:00 Hrs
The MAoS Bundle is your fast track to mastering malware analysis. From core concepts to hands-on reverse engineering, this bundle gives you the real-world skills needed to dissect malware with confidence. Perfect for aspiring analysts, SOC pros, and red teamers preparing to dive into advanced content like the MAoS book.
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SOC Analyst level 1
$500 or 5 × $105

SOC Analyst Professional – Foundations

Trainer: Uriel Kosayev
86 Lessons |
09:30:00 Hrs
This beginner-friendly course covers essential IT fundamentals to build the critical skills every cybersecurity professional needs. It’s the perfect stepping stone to our SOC Analyst Professional – Level 2 and other advanced hands-on courses at TrainSec Academy.
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SOC Analyst level 2
Free Waitlist

SOC Analyst Professional – Attack and Defense

Trainer: Uriel Kosayev
In this hands-on course, you’ll move beyond the fundamentals and step into the actual workflow of a SOC Analyst. Through guided attack simulations, log analysis, and detection engineering, you’ll develop the critical skills needed to monitor, investigate, and respond to real threats, just like in a live security operations center.
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Malware Analyst Professional Course Level 1 Trainsec
$350 or 3 × $121

Malware Analyst Professional – Level 1

Trainer: Uriel Kosayev
56 Lessons |
08:18:00 Hrs
In this malware analysis and reverse engineering course, you will delve into the inner core of dissecting different malware types and variants, understand the adversarial mindset behind them and the used TTPs. At the end of the course, you will gain the power and knowledge to win any malware coming your way.
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Malware Analysis Professional Course Level 2 Trainsec
$350 or 3 × $121

Malware Analyst Professional – Level 2

Trainer: Uriel Kosayev
58 Lessons |
9:12:00 Hrs
In this malware analysis and reverse engineering course, you will delve even deeper into the inner core of dissecting different malware types and variants, understand the adversarial mindset behind them and the used TTPs.
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$890 or 6 × $150

Malware Analysis and Development

Trainer: Uriel Kosayev
105 Lessons |
24:09:00 Hrs
Learn advanced analysis techniques from real-world malware and harness this knowledge to craft your own malware, understanding attacker strategies. Empower yourself with both defensive and offensive cybersecurity skills in this immersive course.
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Posts and articles by Uriel Kosayev

electron based cross platform vulnerability exploitation

One Electron to Rule Them All

Uriel Kosayev August 1, 2024

Authors Uriel Kosayev — @MalFuzzer, Hai Vaknin — @VakninHai, Tamir Yehuda — @Tamirye94, Matan Bahar — @Bl4ckShad3 Prologue As red teamers, we are

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The Malware Shlayer

Uriel Kosayev July 8, 2024

As Mac malware becomes more widespread and as detection mechanisms get more sophisticated, malware actors

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Useful Resources

Pavel’s GitHub
Pavel’s Books
Uriel’s GitHub
Antivirus Bypass Techniques Book

Learning Paths

Windows Master Developer
Windows Internals Master
Windows Security Researcher
Hardware Hacking Expert

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