Hello, I am Seung Hyun Kim.

also known as 「sqrtrev」

Now(2019), I'm a student of Korea Univ. and my major is to keep cyber safe(security perspective).

I'm studying Keras(Backend T.F) for my vision and my vision is to use A.I(Deep Learning) for Security in System/Web.

If you want to request penetration test for your web site, contact me.

Thank you for visiting my web site. :)

Whal3.us - SQL Injection Bug hunt

VoS: Twitch Voting Bot - Security and Backend develop. (PHP/Python)

Cubesoft - SQL Injection on file-upload system bug hunt

Seil High School - SQL Injection and XSS bug hunt

CODEGATE2016 INTERNATIONAL HACKING COMPETITION FINALIST

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WHITEHAT CONTEST2015 FINAL 4TH PLACE

^{AS “HACKMAN”}

WHITEHAT CONTEST2015 PREQUAL 3RD PLACE

^{AS “HACKMAN”}

CODEGATE2015 INTERNATIONAL HACKING COMPETITION FINALIST

^{AS “KH2RS”}

WON THE 7TH PRIZE AT YISF2015 HACKING COMPETITION

^{AS “CONFUS3R”}

2014 SECURITY OLYMPIAD PREQUAL 3RD PLACE

^{AS “KH2RS”}

WON THE 6TH PRIZE AT YISF2014 HACKING COMPETITION

^{AS “KH2RS”}