DeFi & GameFi Smart Contract Security Researcher
I audit smart contracts for DeFi and GameFi protocols on EVM-compatible chains, so each review gets proper attention.
Focus
DeFi & GameFi
Chains
Ethereum, Base, Ronin, BSC, Polygon, and any EVM-compatible chain
Client Testimonials
KoinArcade
Testimonial
"We just wrapped a smart contract audit for KoinArcade — huge thanks to @_Alex_Cipher for the review."
View PostMy Service
Smart Contract Security Reviews
Pricing
Starter
€150
Single contract review, up to 200 lines.
3 day delivery
1 revision
Standard
€400
Full multi-contract audit with a written report and severity ratings.
7 day delivery
3 revisions
Advanced
€750
Full audit plus a post-fix retest and a final sign-off report.
10 day delivery
5 revisions
Final pricing confirmed after a brief scoping call based on actual contract complexity.
Get a QuoteMy Past Security Reviews
BulkSender
Date: February 2026
Status: Completed
Issues Found: 1
KoinArcade
Date: 2026
Status: Completed
Issues Found: See report
About Me
Hi! I'm Adomas Venslovas (Alex Cipher), a blockchain security researcher with three years of experience auditing smart contracts for DeFi and GameFi protocols across EVM-compatible chains.
My work centers on DeFi mechanics and GameFi protocols: staking contracts, AMM logic, token flows, reward systems, and the business logic that makes those products exploitable when it is not reviewed properly.
I have a verified Code4rena M-01 finding, identified a critical vulnerability in BulkSender, and have made responsible disclosures to live Ronin protocols. My goal on every engagement is a high-signal report with clear remediation guidance.
Key Skills
Languages
Solidity, Vyper
Security Analysis
Vulnerability Detection, Code Review
Specialization
DeFi staking, AMM mechanics, GameFi protocol architecture, business logic vulnerabilities
Chains
Ethereum, Base, Ronin, BSC, Polygon, and any EVM-compatible chain
Related Past Work
CTF Creator & Participant
Created an auditor's playground Capture The Flag (CTF) for the security community. I actively participate in CTF competitions, regularly solving complex security challenges.
View Details →Code4rena Winnings
Active security researcher on Code4rena, identifying medium-severity vulnerabilities in protocols. Secured payouts through bug hunting and contest participation.
View Details →