cccz

cccz

@thereksfour

100

Spearbit

sr

Public earnings

$66,307.23

34th


Public findings

50


Achievements


Worked with

Kim Exchange
Inshallah Network
Coinbase
Cryptex
Optimism
Centrifuge
Jonatas Martins
Gerard Persoon
Chinmay Farkya
chris
Riley Holterhus
Optimum

Biography

Biography

  • Browser Security Researcher (Q3 2019)
    • found multiple chrome vulnerabilities and got acknowledgements, some results published in BlackHat EU 2020.
  • BlockChain Security Researcher (Q3 2020)
    • found critical vulnerability in TRON, published in BlackHat USA 2021 and DEFCON 29.
  • Smart Contract Security Researcher (Q4 2021)
    • found 100+ high-risk and 200+ medium-risk vulnerabilities in C4.

Top competitions

View all
Contest
Position
Date
Payout
Smart-contracts

Smart-contracts

1

/ 244

March 2024$28,058
beraborrow-blockend

beraborrow-blockend

3

/ 65

February 2025$7,672
incentive-contracts

incentive-contracts

8

/ 152

January 2024$3,540
Euler-v2

Euler-v2

36

/ 600

May 2024$1,000
core-and-erc1155a

core-and-erc1155a

20

/ 173

November 2023$852

Private reviews

View all
Engagement
Project title
Timeframe
Researchers
NFTX

NFTX

nftx-protocol-v3

Aug 2023 - Aug 2023

hyh
cccz
Centrifuge

Centrifuge

PermissionedUSDCWrapper.sol

Jun 2024 - Jun 2024

cccz
0xRajeev
Optimism

Optimism

Optimism Cycle 19 Security Review

Jan 2024 - Feb 2024

cccz
Jeiwan
Christos Pap
Cryptex

Cryptex

cryptex-monorepo

Sep 2024 - Sep 2024

cccz
Patrick Drotleff
Coinbase

Coinbase

session-keys

Sep 2024 - Sep 2024

+1
Riley Holterhus
noah.eth
Chinmay Farkya

Security portfolio

Title
Description
Black Hat USA 2021 SpeakerPublished a critical vulnerability in TRON
DEFCON 29 speakerPublished a critical vulnerability in TRON
Black Hat Europe 2021 SpeakerPresenting an interesting chrome vulnerability
Code4renaRanked #4 on the Code4rena all-time leaderboard.