I work at the intersection of security, open source, Ethereum and AI, with a focus on technical product marketing and developer-facing products.
Fixes merged, cherry-picked or otherwise incorporated upstream by project maintainers:
| Project | Impact | Change |
|---|---|---|
| blackrock/HOLA #69 | — | Corrected the documented Forrester benchmark so the README and getting-started examples match the repository implementation and reproduce the stated minimum. Added a regression comparing both documented objectives against the benchmark at five inputs; all 10 numerical comparisons fail before the fix and pass within 1e-12 after. Merged upstream as 55647c9 |
| openai/codex-security #1306 | Medium · security coverage | Added Vyper .vy sources to scan inventories and ranking paths so Vyper-only changes are not omitted before review-item generation. OpenAI maintainer independently verified all five new inventory/ranking regressions fail on the parent and pass with the fix; 295 affected-module tests passed with no blocking behaviour issues. Merged upstream as d327164 |
| openai/codex-security #1021 | Medium · security coverage | Added Solidity .sol files to diff scan inventories and rank inputs, with red/green coverage across repository, revision and local-patch modes |
| openai/codex-security #1020 | — | Required verification evidence before no_change remediation results are treated as resolved, with a regression proving evidence-free results fail closed |
| openai/openai-guardrails-js #148 | — | Fixed vector-store uploads for supported documents inside directories whose names contain dots. Three red/green regressions, 882 tests, multi-version CI and CodeQL passed |
| GoogleChrome/chromium-dashboard #6946 | — | Restored the “Draft Intent to Extend Experiment” email action when API-owner gates are active across normal launch, fast-track and deprecation processes. Added a regression covering all three definitions; merged as ca80064 and deployed in release #6950 |
| promptfoo/mcp-agent-provider #95 | — | Replaced message-count token estimates with measured OpenAI usage aggregated across ReAct iterations, omitted incomplete usage totals and removed fabricated cost estimates. Maintainer-approved with real-SDK loopback regressions for measured, zero and missing usage; 31 tests, lint and Node 20/22/24 CI passed. Merged upstream as 6478386 |
| promptfoo/promptfoo #11243 | — | Fixed Vertex Claude sampling resolution so explicit top_p: 0 and top_k: 0 values are preserved instead of being replaced or omitted. Maintainer verification covered 1,146 Google provider tests, typecheck, CLI build, formatting/lint and all 57 applicable PR checks |
| promptfoo/modelaudit #1859 | — | Preserved native SafeTensors routing for valid FDICT-shaped headers while retaining fail-closed compression routing for unknown, inconclusive and genuine compressed inputs. Superseded by maintainer PR #1863, merged as 2a5185a with my commits and co-authorship preserved |
| ethereum/go-ethereum | — | Corrected the eth RPC endpoint documentation |
| ethereum/ethereum-org-website #19272 | — | Synced the Glamsterdam proposal list, removing EIP-7610 and adding eth/72 (EIP-8070), EIP-8136 and snap/2 (EIP-8189). Shipped to production in ethereum.org v11.29.0 / #19406, where I was credited in the release contributors list. Maintainers also added me as an ethereum.org maintenance contributor in #19364 |
| ethereum/ethereum-org-website #19368 | — | Repaired contributor onboarding in the repository README: replaced two dead links, corrected build-locale setup to use .env.local, added the missing staging step before commit, and fixed first-push instructions with git push -u origin HEAD. Reproduced each failure path before the fix; approved by a maintainer and merged upstream as efb29af |
| ethereum/ethereum-org-website #19409 | Medium · data availability | Prevented a transient failure in one Google Sheets app category from overwriting the last good cached catalog with an empty category. Added a regression that returns 503 Service Unavailable for one category and proves the fetch fails closed instead of persisting partial data; upstream CI passed |
| google/skill-reach | — | Preserved query metadata across CSV and JSONL exchange formats |
| nasa/delta | — | Fixed cache eviction for files |
| Samsung/CredSweeper | Medium · scanner coverage | Fixed CRX3 payload extraction, so credentials inside current Chrome extensions are no longer skipped |
| ethsystems/map | — | Clarified the ERC-3643 transfer and admin paths |
| ethsystems/web #44 | — | Repaired four broken proof-of-concept and specification links across the private bonds, shielded transfers and cross-chain swap write-ups. Cherry-picked upstream in commit 82bd4f0, preserving my authorship |
| ethsystems/web #45 | — | Fixed glossary link handling so linked terms and definitions render correctly and root map documents resolve to their GitHub source. Cherry-picked upstream in commit 63f99bd, preserving my authorship; 58/58 tests passed and 218 pages built |
| ethsystems/web #46 | — | Fixed sibling RFP link routing so bare RFP Markdown links resolve to /rfps/... routes instead of unrelated graph routes. Incorporated upstream in commit 3330621, with my contribution and authorship explicitly credited |
| ethsystems/web #47 | — | Restored glossary definitions written on continuation lines without swallowing the next term or category, with regression coverage. Incorporated upstream in commit 3330621, with my contribution and authorship explicitly credited |
| ethsystems/web #48 | — | Replaced the retired Custom UTXO reference in Private Bonds Part 3 with the maintained Shielding pattern and added the corresponding map reference. Incorporated upstream in commit 3330621, with my contribution and authorship explicitly credited; combined suite passed 62/62 tests |
| Consensys/ask-o11y-plugin | — | Switched LLM requests from the deprecated max_tokens to max_completion_tokens, with tests. Shipped in v0.3.18 |
| NethermindEth/nethermind | — | Made engine_newPayloadV3+ reject null or missing withdrawals, blobGasUsed and excessBlobGas with -32602 instead of marking the payload INVALID. My fix and regression test, merged in a maintainer PR that extended the tests |
| NethermindEth/nethermind #13755 | Medium · protocol availability | Fixed the Amsterdam Engine API boundary: engine_getPayloadV5 now returns -38005 Unsupported fork at Amsterdam instead of dropping slotNumber and blockAccessList. Added a red/green regression and preserved Osaka V5 behaviour; merged upstream and closed #13713 |
| NethermindEth/nethermind #14228 | Medium · authentication integrity | Fixed JWT cache reuse accepting correctly signed tokens after their explicit exp. Cached authentication now enforces the same expiration boundary as fresh validation while preserving the fast path, with regressions across both validation paths; merged upstream as eeca264 |
| NethermindEth/nethermind #14338 | — | Corrected published Docker image metadata so Nethermind advertises P2P discovery on 30303/udp as well as 30303/tcp. Extended the image metadata regression check; the validation build confirmed both standard and chiseled images expose both protocols |
| NethermindEth/dotnet-riscv #18 | — | Repaired the README's Stateless Executor reference after the old feature branch was deleted, pointing the RISC-V build pipeline to the current Nethermind.Stateless.Executor location on master. Validated that the old URL returned 404 and the replacement resolves; approved and merged upstream as 41038a0 |
| DefiLlama/peggedassets-server | — | Corrected the EURR issuer attribution: Bridge Building S.A. issues it, Revolut distributes it |
| centrifuge/api-v3 | — | Added the Pharos block explorer URL |
| solana-foundation/solana-web3.js #3943 | Medium · release integrity | Added runtime smoke tests for both IIFE browser bundles. Review surfaced a Rollup substitution bug that made the v3 bundles throw in browsers; the PR merged with the maintainer's fix |
| solana-foundation/solana-com #2150 | Medium · data freshness | Fixed slot-time block requests rejecting newer blocks containing Solana v1 transactions, which could leave the endpoint serving cached blocks minutes old despite a four-second refresh target (#2141). Raised maxSupportedTransactionVersion to 1, with regression tests for the exact JSON-RPC request and program ID resolution using static and loaded address-table keys. Approved and merged upstream as a233795 |
Impact is listed only for findings with demonstrated security, scanner-integrity, protocol-availability, data-availability or release-integrity consequences; ratings are evidence-based and not upstream-assigned.
Also:
- proposed the fix for a reported Claude Code startup failure in Trail of Bits'
second-opinionplugin (#303). The maintainer shipped the same fix in #306.
Plain-English case studies of verified open-source fixes, with each problem, change and proof recorded.
-
GTM-Teardowns: public, audit-first go-to-market teardowns of target companies.
-
Web3 Security Library
: Immunefi's library of Web3 security tutorials and tools. Second-largest contributor while at Immunefi
(commits).
-
Best-DeFi-Security-Practices
: a reference list of security practices for DeFi protocols.
- Open-source contributions across Ethereum, security and developer tooling
- Finding and fixing high-impact technical issues
- Building visible proof of work through code, audits and documentation
Submitted upstream changes backed by reproducible regression evidence and broader checks. Entries stay here until merged; maintainer-approved work is labelled explicitly and is not presented as merged.
| Project | Change | Status |
|---|---|---|
| NethermindEth/nethermind #14372 | Normalised malformed receipt post-state lengths to RlpException instead of a generic ArgumentException, keeping invalid peer input on the standard RLP deserialisation path. Locally reproduced; regressions cover 5, 31, 33 and 34-byte first items across both receipt decoder variants |
 |
| promptfoo/mcp-agent-provider #96 | Fixed Streamable HTTP → legacy SSE fallback so compatibility retry happens after connection negotiation, with an end-to-end SSE server regression; Node 20/22/24 and Biome CI pass |  |
| NethermindEth/pluto #714 | Kept tracing topic labels visible to metrics at the default info log level, with an integration regression |
 |
| NethermindEth/pluto #715 | Stopped ignored OTLP header values from leaking into WARN logs; the warning now records only the header count |  |
| Area | Result |
|---|---|
| Security research | H1 2026 Digital Asset Security Review: 100+ incidents, $850M in losses |
| Exploit forensics | $287M+ in losses reconstructed |
| Organic reach | 2M+ impressions in 90 days, zero paid spend |
| Community | 2,300+ member security community |
| Disclosures | Acknowledged by the DoD (DARPA, Air Force, Navy), Toyota and Philips |
| Category | Created W3SPM (Web3 Security Posture Management) |