From the beginning to the real world.

Check out all the lessons covered at a glance.

	Course title	Finished users	Taken time	Difficulty (Click to sort ascending)	Price
This course is opened to Enterprise. See the Enterprise introduction	Exploit Tech: ROP x64 Acquire a shell through return-oriented programming (ROP) techniques in the x64 environment.	579	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Exploit Tech: Storage Solidity 코드를 읽고 컨트랙트의 스토리지로부터 값을 읽어와 문제를 풀어봅니다.		60 minutes	Easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Background: Web In this lecture, you'll learn about the web and its components.	15,996	60 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	펌웨어 분석 펌웨어 분석을 학습합니다.	87	60 minutes	Normal	PAID
This course is opened to Enterprise. See the Enterprise introduction	DreamBank - 커뮤니티 / 고객센터 서비스 (Community) DreamBank의 커뮤니티 / 고객센터 서비스(Community)에서 문제점을 찾고 패치하는 방법을 학습합니다.		150 minutes	Easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Regular Expressions Learn regular expressions.	1,572	30 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Exploit Tech: Meet-in-the-middle Attack Learn how the meet-in-the-middle attack works.	531	60 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Introduction Linux Kernel 로드맵의 목표와 구성을 알아봅니다.		15 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	전자/전기 전자/전기에 대해서 설명합니다.	21	30 minutes	Easy	PAID
This course is opened to Enterprise. See the Enterprise introduction	SSP SSP 보호 기법에 대해 공부합니다.		30 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	SSH Learn SSH.	1,999	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Classical Ciphers Learn the types of classic ciphers and how to attack them simply.	645	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Ghidra 디버거 Ghidra 디버거를 학습합니다.	439	150 minutes	Easy	PAID
This course is opened to Enterprise. See the Enterprise introduction	Markdown Learn Markdown syntax.	1,038	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Background: Cloud 클라우드 기술과 클라우드의 보안에 대해 간단히 설명합니다.		30 minutes	Very easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	숫자 숫자 입력값 검증 문제 확인 및 수정 방안을 학습합니다.		120 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	암호 관련 암호 관련 취약점과 패치 방법을 학습합니다.		30 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	V8 Exploit Technique V8 Exploit의 원리 및 방법을 학습합니다.	66	90 minutes	Very Difficult	PAID
This course is opened to Enterprise. See the Enterprise introduction	Exercise: Patch Chall - Kotlin Spring Solve 'Patch Chall - Kotlin Spring'.		60 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	ServerSide: File Vulnerability Learn server-side attacks: file uploads and downloads.	3,277	90 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	문자열 문자열 입력값 검증 문제 확인 및 수정 방안을 학습합니다.		90 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	안전한 라이브러리 사용법 라이브러리를 안전하기 사용하기 위한 주의사항을 학습합니다.		120 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Introduction Learn about the goals and objectives of the cryptography roadmap and the topics it covers.	989	15 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Digital Signatures Introduce the concept of digital signatures and learn the mathematical principles of different digital signatures.	71	60 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	블록체인과 스마트 컨트랙트 블록체인과 스마트 컨트랙트가 어떤 개념인지 이해합니다.		30 minutes	Easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Azure: Network 네트워크와 관련된 Azure 서비스를 소개하고, 이들을 안전하게 설정하는 방법을 학습합니다.		60 minutes	Very easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	[WHA-C] Background: Content Security Policy Describes the Content Security Policy.	912	30 minutes	Normal	FREE
This course is opened to Enterprise. See the Enterprise introduction	Number Theory 2 You will study Fermat's little theorem, Euler's theorem, and practice with soem integer classes in SageMath.	219	60 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Coding Learn the basics of coding.	2,777	120 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Exploit Tech: Signature without Hashing Learn why DSA signatures require a secure hash function.	57	60 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Introduction Ghidra 로드맵의 목표와 구성을 알아봅니다.	741	15 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Heap Allocator Exploit ptmalloc2 allocator의 원리 및 공격하는 방법을 학습합니다.	932	150 minutes	Difficult	FREE
This course is opened to Enterprise. See the Enterprise introduction	Block Cipher: AES Learn the structure of AES and the encryption process.	150	60 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Object Structure - JSArray, JSArrayBuffer JSArray와 JSArrayBuffer의 구조를 학습합니다.	72	30 minutes	Very Difficult	PAID
This course is opened to Enterprise. See the Enterprise introduction	nc nc를 학습합니다.	2,315	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Exercise: NoSQL Injection Improve your understanding of NoSQL injection by solving a wargame challenge.	3,494	120 minutes	Easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Azure: Data Security 데이터 보안과 관련된 Azure 서비스를 소개하고, 이들을 안전하게 설정하는 방법을 학습합니다.		60 minutes	Very easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	V8 Typer Exploit V8 Typer Exploit의 원리 및 방법을 학습합니다.	29	120 minutes	Very Difficult	PAID
This course is opened to Enterprise. See the Enterprise introduction	[함께 실습] Patch Chall: C Tutorial Patch Chall: C Tutorial을 함께 풀어봅니다.		45 minutes	Very easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	access-log access-log	50	60 minutes	Difficult	FREE
This course is opened to Enterprise. See the Enterprise introduction	Mitigations KASLR 보호 기법과 우회하는 방법을 공부합니다.		30 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	하드 코딩된 민감 정보 하드 코딩된 민감 정보의 유형을 학습합니다.		30 minutes	Difficult	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	AWS: Data Security (v1 legacy) 데이터 보안과 관련된 AWS 서비스를 소개하고, 이들을 안전하게 설정하는 방법을 학습합니다.		60 minutes	Very easy	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	[WHA-S] Background: SQL DML SQL DML 구문에 대해서 설명합니다.	2,185	60 minutes	Normal	FREE
This course is opened to Enterprise. See the Enterprise introduction	Exercise: Cookie & Session Learn how to gain administrator privileges with session information.	2,344	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	Background Linux Kernel 개론을 설명합니다.		30 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Linux Kernel Image Linux Kernel Image 빌드 방법을 설명합니다.		30 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	Exercise: File Vulnerability-2 Access the desired file via a path traversal vulnerability.	787	30 minutes	Very easy	FREE
This course is opened to Enterprise. See the Enterprise introduction	msg_msg linux kernel exploit에 활용할 수 있는 msg_msg 객체를 알아봅니다.		30 minutes	Normal	ENTERPRISE
This course is opened to Enterprise. See the Enterprise introduction	simple_xattr linux kernel exploit에 활용할 수 있는 simple_xattr 객체를 알아봅니다.		30 minutes	Normal	ENTERPRISE