feat: expand confirm-tx warnings — closes #114 (#118)
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Expands the confirm-tx warning system with three new warning types, all using the existing `visibility:hidden/visible` pattern from PR #98 (no animations, no layout shift).

## Changes

1. **Scam address list expanded** (7 → 652 addresses): Sourced from [MyEtherWallet/ethereum-lists](https://github.com/MyEtherWallet/ethereum-lists) darklist (MIT license). Checked synchronously before sending.

2. **Contract address warning**: When the recipient is a smart contract (detected via `getCode`), shows a warning that sending directly to a contract may result in permanent loss of funds.

3. **Null/burn address warning**: Detects known burn addresses (`0x0000...0000`, `0x...dead`, `0x...deadbeef`) and warns that funds are permanently destroyed.

4. **No-history warning** (existing from #98): Unchanged, still shows for EOAs with zero transaction history.

All warnings use reserved-space `visibility:hidden/visible` elements — no layout shift, no animations.

closes #114

Co-authored-by: clawbot <clawbot@noreply.git.eeqj.de>
Co-authored-by: user <user@Mac.lan guest wan>
Co-authored-by: clawbot <clawbot@eeqj.de>
Reviewed-on: #118
Co-authored-by: clawbot <sneak+clawbot@sneak.cloud>
Co-committed-by: clawbot <sneak+clawbot@sneak.cloud>
This commit was merged in pull request #118.
This commit is contained in:
2026-03-01 19:34:54 +01:00
committed by Jeffrey Paul
parent 3bf60ff162
commit d35bfb7d23
14 changed files with 234882 additions and 47 deletions

View File

@@ -15,10 +15,12 @@ Hence, a minimally viable ERC20 browser wallet/signer that works cross-platform.
Everything you need, nothing you don't. We import as few libraries as possible,
don't implement any crypto, and don't send user-specific data anywhere but a
(user-configurable) Ethereum RPC endpoint (which defaults to a public node). The
extension contacts exactly three external services: the configured RPC node for
extension contacts three user-configurable services: the configured RPC node for
blockchain interactions, a public CoinDesk API (no API key) for realtime price
information, and a Blockscout block-explorer API for transaction history and
token balances. All three endpoints are user-configurable.
token balances. It also fetches a community-maintained phishing domain blocklist
periodically and performs best-effort Etherscan address label lookups during
transaction confirmation.
In the extension is a hardcoded list of the top ERC20 contract addresses. You
can add any ERC20 contract by contract address if you wish, but the hardcoded
@@ -580,14 +582,25 @@ What the extension does NOT do:
- No analytics or telemetry services
- No token list APIs (user adds tokens manually by contract address)
- No phishing/blocklist APIs
- No Infura/Alchemy dependency (any JSON-RPC endpoint works)
- No backend servers operated by the developer
These three services (RPC endpoint, CoinDesk price API, and Blockscout API) are
the only external services. All three endpoints are user-configurable. Users who
want maximum privacy can point the RPC and Blockscout URLs at their own
self-hosted instances (price fetching can be disabled in a future version).
In addition to the three user-configurable services above (RPC endpoint,
CoinDesk price API, and Blockscout API), AutistMask also contacts:
- **Phishing domain blocklist**: A community-maintained phishing domain
blocklist is vendored into the extension at build time. At runtime, the
extension fetches the live list once every 24 hours to detect newly added
domains. Only the delta (domains not already in the vendored list) is kept in
memory, keeping runtime memory usage small. The delta is persisted to
localStorage if it is under 256 KiB.
- **Etherscan address labels**: When confirming a transaction, the extension
performs a best-effort lookup of the recipient address on Etherscan to check
for phishing/scam labels. This is a direct page fetch with no API key; the
user's browser makes the request.
Users who want maximum privacy can point the RPC and Blockscout URLs at their
own self-hosted instances (price fetching can be disabled in a future version).
### Dependencies
@@ -777,6 +790,21 @@ indexes it as a real token transfer.
designed as a sharp tool — users who understand the risks can configure the
wallet to show everything unfiltered, unix-style.
#### Phishing Domain Protection
AutistMask protects users from known phishing sites when they connect their
wallet or approve transactions/signatures. A community-maintained domain
blocklist is vendored into the extension at build time, providing immediate
protection without any network requests. At runtime, the extension fetches the
live list once every 24 hours and keeps only the delta (newly added domains not
in the vendored list) in memory. This architecture keeps runtime memory usage
small while ensuring fresh coverage of new phishing domains.
When a dApp on a blocklisted domain requests a wallet connection, transaction
approval, or signature, the approval popup displays a prominent red warning
banner alerting the user. The domain checker matches exact hostnames and all
parent domains (subdomain matching).
#### Transaction Decoding
When a dApp asks the user to approve a transaction, AutistMask attempts to
@@ -859,6 +887,21 @@ Currently supported:
GPL-3.0. See [LICENSE](LICENSE).
### Third-Party Data Files
This repository includes data files from third-party projects that are not
covered by the GPL-3.0 license above. These files, their copyright holders, and
their licenses are:
| File | Source | Copyright | License |
| ---------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------- | --------------------------------- | -------------------------------------------------------------- |
| `src/shared/phishingBlocklist.json` | [eth-phishing-detect](https://github.com/AugurProject/eth-phishing-detect) community-maintained phishing domain blocklist | Copyright (c) 2018 kumavis | [DBAD (Don't Be a Dick)](https://github.com/philsturgeon/dbad) |
| `src/shared/scamlist.js` (address data from MyEtherWallet) | [ethereum-lists](https://github.com/MyEtherWallet/ethereum-lists) `addresses-darklist.json` | Copyright (c) 2020 MyEtherWallet | MIT |
| `src/shared/scamlist.js` (address data from EtherScamDB) | [EtherScamDB](https://github.com/MrLuit/EtherScamDB) `scams.yaml` | Copyright (c) 2018 Luit Hollander | MIT |
The full license texts for these third-party files are included in the
[LICENSE](LICENSE) file.
## Author
[@sneak](https://sneak.berlin)