I am Abdul Sami J. and I've been in tech as both a startup founder and security researcher over 5+ years. I specialize in blockchain infrastructure and complex systems.
My work focuses on blockchain infrastructure, distributed systems, and DeFi security. Over the years, I've completed 100+ security audit engagements, uncovering vulnerabilities across a wide range of blockchain protocols, infrastructure, and off-chain services. My experience spans the full stack—from smart contracts to node software, protocol infrastructure, and backend systems.
Below are a few of the protocols and teams I've had the opportunity to help secure over the years.
| Protocol | Project Type | Language(s) | Company |
|---|---|---|---|
| M0 | Cross-chain Bridge, Stablecoin Infrastructure | Solana (Rust) | Halborn |
| Solstice Labs | Vesting, Staking | Solana (Rust) | Halborn |
| Blueprint Finance | Yield, Staking & CDP Infrastructure | Solana (Rust) | Halborn |
| Sanctum | Staking Infrastructure | Solana (Rust) | Halborn |
| TruYield | Vaults, Liquid Staking | Solana (Rust) | Halborn |
| Raise Protocol | Infrastructure & Payments | Solana (Rust) | Halborn |
| Rain Protocol | Lending & Borrowing | Solana (Rust) | Halborn |
| Babylon Chain | Chain Upgrade & Core Improvements | Cosmos SDK (Go) | Halborn |
| Xiadel (Private) | Over-collateralized Lending | Solana (Rust) | Halborn |
| Smithii (Private) | RWA, Vesting | Solana (Rust) | Halborn |
| Zan (Private) | Real World Assets (RWA) | Solana (Rust) | Halborn |
| Undisclosed | ZK & Privacy Infrastructure | Solana (Rust) | Halborn |
| Persistence | YBTC & BTC Contracts | Cosmos SDK (Go) | Oak Security (Collaborative) |
| Interchain Foundation | ICS-721 & Interchain Stack | CosmWasm (Rust) | Oak Security (Collaborative) |
| Margined Protocol | Vault Infrastructure | CosmWasm (Rust) | Oak Security (Collaborative) |
| Axone | Shared Digital Infrastructure | Cosmos SDK (Go), CosmWasm (Rust) | BlockApex |
| Yamato v2 | Collateralized Debt Positions | Solidity | BlockApex |
| LightLink Toucan | LayerZero Cross-chain Bridge | Solidity | BlockApex |
| LightLink Bridge | Layer 2 Infrastructure | Solidity | BlockApex |
| EclipseFi | Staking & Vesting | CosmWasm (Rust) | BlockApex |
| Jump DeFi | Launchpad & Staking | NEAR (Rust) | BlockApex |
| Pluto | Lending Protocol | Solana (Rust) | BlockApex |
| ADOT | Bridge, NFT Marketplace & Auctions | Solidity | BlockApex |
| Hyperlane-based Bridge | Cross-chain Bridge | Solidity | BlockApex |
| Unipilot | DEX, Farming & Staking | Solidity | BlockApex |
| MetaPool | Liquid Staking Token (LST) | ICP (Motoko) | BlockApex |