Follow us: https://x.com/DeFiHackLabs

Website: https://defihacklabs.io/

Founder - SunSec

• Founder of DeFiHackLabs Web3 Security Community
• CISO & GM @XREX inc
• Co-founder & CTO @Unitas Foundation
• Seal911 White Hat
• ScamSniffer & LazyOtter Advisor
• Author of DeFiHackLabs and DeFiVulnLabs got 6,000+ stars on Github.
• CyberSecurity with 18 years experience, CTF enthusiast, Bug hunter.
• Presented at CYBERSEC 2024, HK web3 festival 2024, Taiwan Blockchain Summit'23, Taiwan AWS Summit'23, Taipei Ethereum Meetup '19, SecTor '18, Blockchain Technology Conference '18, BLOCKConscious Summit '18, Chain-in '18, BlackHat '17, Hackfest '17, Hack in Paris '17, AusCERT '16, Troopers '16, Hack.lu '16, SteelCon '16, TROOPERs '16, Virus Bulletin '16, RSA '15 '16.

DeFiHackLabs OPs

Web3 Security Engineer

Helen

Web3 Security Researcher

Alice

Web3 Builder

0xRory

Web3 Security Researcher

0xAWM

Web3 Security Researcher

nervouspika

Vision

Empowering a safer Web3 ecosystem through collective security expertise and innovation, aiming to build a more secure and resilient digital future.

Bridge traditional and emerging talent into Web3 security, enhancing ecosystem resilience through strategic partnerships and education. We provide a platform for professionals to access training, tools, and direct industry engagement, advancing Web3 security collectively.

Mission

About us

DeFiHackLabs is a Web3 security community with over 4,000 members and 292 white-hat hackers located around the world.

Main Team

• 2025 ETHGlobal Taipei Hackathon 1 place
• 2025 Remedy CTF 7th place
• 2024 ScanCTF 1st place
• 2024 BlazCTF 4th place
• 2024 Arbitrum Audit 1st place (Winnie)
• 2024 Ethernaut CTF 9th place
• 2024 zkSync Audit 1st place (Winnie)
• 2023 CodeQuest Hackathon 1st place
• 2023 BlazCTF 4th place
• 2023 Paradigm CTF 11th place
• 2023 Numen CTF 4th place
• 2023 ETHTaipei War Room 3rd place
• 2023 QuillCTF Dubai CTF 5th place

​

Major Achievement

​

• 2023 MetaTrust CTF 6th place
• Top 4 Contributors ChainAbuse
• ONLYPWNER CTF 1th place

What we have built

DeFiHackLabs Github Repo: Reproduce DeFi hacked incidents using Foundry.

To learn more：https://github.com/SunWeb3Sec/DeFiHackLabs

​

​

• 6,100 Stars
• 135 Contributors
• 670 POCs

What we have built

DeFiVulnLabs Github Repo: Discover common smart contract vulnerabilities with Foundry.

To learn more：https://github.com/SunWeb3Sec/DeFiVulnLabs

• 1,900 Stars
• 13 Contributors
• 48 Types of Vulns

What we have built

DeFiVulnLabs Solidity Security Testing Guide

To learn more：https://web3sec.notion.site/b201fe69f84e4050bf3915c6030f0fdf

Detailed testing for 47 types of vulnerabilities, along with recommendations, have been compiled into a Solidity security testing Guide

What we have built

Root Cause Analysis of 504 DeFi Hacking Incidents �(Supported languages: English, Chinese, Korean, Japanese, Vietnamese, Spanish)

To learn more：https://web3sec.xrex.io

What we have built

DeFi Hack Incidents Explorer - Open Source

To learn more：https://defihacklabs.io/explorer/

What we have built

Unphishabled - Web3 Phishing Safe Challenges

To learn more：Unphishable

What we have built

Write Loud, Hack Proud - Your technical article shouldn’t be gathering dust in a folder.

To learn more：Write Loud, Hack Proud

What we have built

DeFiHackLabs Discord Community

4,070 members and 235 white hats located around the world.

DeFiHackLabs WeChat & Line Channel

Join us: https://discord.gg/MrmdXDBe25

887 members and 80 white hats in Asia

What we have built

DeFiHackLabs Web3 Security Academy

4,826 subscriptions

To learn more：https://defihacklabs.substack.com/

What we have built

DeFiVulnLabs Web3 Security Club: community study group and tech sharing

To learn more：https://www.youtube.com/@DeFiHackLabs

What we have built

Informative Tweet - Tutorial

Web3 Security Challenges - Spot a Bug

https://web3sec.xrex.io

https://web3sec.xrex.io

What we have built

Web3 & Web2 Security News Daily Digest

To learn more：TG Channel

What we have built

DeFiHackLabs Partners: 29 partners to make Web3 more Secure

What we have done

2025 ETHGlobal Taipei Hackathon 1st place in three tracks!

What we have done

2025 ETHTaipei!

What we have done

2025 CYBERSEC

What we have done

2025 4 online & 2 offline Workshop at Korea University, South Korea

What we have done

2025 White Hat Training Program: 3 cohorts

over 1 month!

What we have done

2025 COUCUP - 7 talks selected

What we have done

DeFiHackLabs POC Contest - Summer 2025

2025 HITCON CTF

What we have done

EOAs at the EIP-7702 Casual Hackathon

2025 ETHTaipei & ETHGlobal Taipei writing competition

2025 TBW

2025 ETHAsia

What we have done

2025 DeFiHackLabs meetup

What we have done

2024 Let’s Scroll meetup x DeFiHackLabs

What we have done

2024 Scroll VORTEx Hackathon

What we have done

2024 CYBERSEC

What we have done

2024 Meet TABEI @ ABS

2024 COSCUP 4 Topics Sharing

What we have done

2024 HITCON CTF

What we have done

2024 PoC Summer Contest

What we have done

2024 HITCON (Hacks In Taiwan Conference)

What we have done

2024 ETHTaipei x TEM

2024 HITCON Community

​

What we have done

2024 HITCON Web3 Security Workshop

2024 Meet TABEI Forum

​

What we have done

2024 XueDAO CONNECT Hackathon (Community Partner)

What we have done

2024 DeFiHackLabs In DevCon

What we have done

DeFiHackLabs secured 1st place in the First ever Digital Asset Tracking CTF!

What we have done

2024 The 9th Taiwan Blockchain Summit

What we have done

More events

What we have done

2023 Taiwan Builder House

What we have done

Event Partnership

What we have done

​

Collerabated with WTF Academy - We contributed On-chain threat analysis series

https://github.com/WTFAcademy/WTF-Solidity?tab=readme-ov-file#%E9%93%BE%E4%B8%8A%E5%A8%81%E8%83%81%E5%88%86%E6%9E%90

https://defihacklabs.substack.com/about

What we have received appreciation

What we have received appreciation

​

DeFiHackLabs Nurturing Students in Web3 Security

https://x.com/xuedao_tw

https://www.instagram.com/taiwan_security_club/

https://www.instagram.com/nckuctf/

https://www.facebook.com/ntust.hacking/

​

DeFiHackLabs Ethereum and Web3 Security BootCamp

https://defihacklabs.io/bootcamp/index.html

​

DeFiHackLabs Ethereum and Web3 Security BootCamp

​

DeFiHackLabs 21 Days Intensive CoLearning

https://github.com/DeFiHackLabs/Web3-CTF-Intensive-CoLearning

Web3 CTF Intensive CoLearning

Solidity Intensive CoLearning

https://github.com/DeFiHackLabs/Solidity-Intensive-CoLearning

​

Podcast Programme

2024 區塊勢 Podcast | EP262

https://open.spotify.com/episode/5khjWwA5GgjUPCCyCYI8DM

資助公共財是錢太多的煩惱？金錢離不開政治 、凝視深淵的必要ft.

GCC、DeFiHackLabs、Mask Network

2024 區塊勢 Podcast | EP265

Web3 資安大神來了！揭秘北韓駭客國家隊、免費以太坊資安訓練營 ft. XREX 資安長、DeFiHackLabs 創辦人 SunSec

https://open.spotify.com/episode/74RzQKeNZiAtPIYpGq4MGR

​

DeFiHackLabs Exclusive Interview Article

https://www.gccofficial.org/blog/defihacklabs

What we have received appreciation

What we have received appreciation

​

TaiChi Audit Group incubated by DeFiHackLabs

Our team brings extensive experience in competitive audits and CTF challenges, dedicated to enhancing project security coverage and providing comprehensive protection for funds.

About TaiChi

• Total : 60+ Competitions
• Vulnerabilities Found : 130+ High/Medium

Achievements

• Static Analyzer Scanning
• AI Vulnerability Detection
• Manual Code Review
• Security Consulting

Services

2025 DeFiHackLabs Activities

• Cybersecurity Expo Booth Tour & Education Sessions
• White Hat Training Program: 3 cohorts over 1 month
• 1 talk at ETHTaipei
• 3 talks at CYBERSEC 2025
• 1 talk at Web3 Internship Program
• ETHTaipei & ETHGlobal Taipei Writing Campaign – 4 selected articles
• Incident Explorer Platform – launched
• Unphishable - Interactive Web3 Anti-Phishing Training Platform – launched
• 104 new DeFi security breach root cause analyses added
• 6 workshops at Korea University (4 online, 2 in-person)
• Web3 Security Club: 5 technical talks hosted
• Japanese translations added for 7 On-Chain Transaction Debugging articles
• COSCUP 2025 - 7 talks selected
• HITCON CTF Partnership and create one web3 challenge
• DeFiHackLabs POC Summer Contest 2025 - received 88 PoCs
• ETHShanghai 2025 - Partnership
• DeFiHackLabs Web3 Talent Referral Program Initiative
• EIP-7702 Casual Hackathon Demo Day
• DeFiHackLabs meetup at Taipei blockchain week (TBW)

Done

2024 DeFiHackLabs Activities

• 02/05 Let’s Scroll meetup x DeFiHackLabs.
• 03/16~03/17 Ethernaut CTF: 9th place.
• 04/14 Hong Kong Web3 Festival: 1 talk by a community white hat.
• 04/27 Scroll VORTEx Hackathon.
• 05/14 National Taiwan University: 1 talk by a community white hat.
• 05/14~05/16 CYBERSEC 2024: 3 talks by community white hats.
• 06/19 ~07/24 200 DeFi Hacks root cause report.
• 07/12~07/14 HITCON CTF 2024 Quals: Create two Web3 CTF challenges for the HITCON. CTF. The HITCON CTF champion will qualify for the DEFCON finals in August.
• 07/1~07/31: PoC Summer Contest (Received 73 PoCs).
• 08/03-08/04: COSCUP 2024: 4 talks by a community white hats at COSCUP.
• 8/6 Meet TABEI Forum: Web3 Security Panel.
• 8/21: PoC reproduce sharing in TEM.
• 08/23-08/24 HITCON CMT 2024: community booth and 1 talk at HITCON CMT.
• 09~2025/01 DeFiHackLabs Ethereum and Web3 Security Bootcamp
• 11/12-11/15 30+ community white hats at Devcon.

​

Done

2024 - Mission Completed

• Reach 200 whitehats in the community.
• Keep DeFiHackLabs POC updated to help everyone learn and prevent repeated vulnerabilities.
• Participate blockchain conferences, promote Web3 security at booth exhibitions and host Web3 security workshops to cultivate talent.

Future Roadmap

2025 - Mission Completed

• Achieve 300 white hats in the community.
• Keep DeFiHackLabs POC updated to help everyone learn and prevent repeated vulnerabilities.
• Build more Web3 security open-source tools.

Contact Us

@huangsun