# Address Poisoning Checker

URL: https://phishdestroy.io/developer-tools/address-poisoning-checker
Category: Crypto & wallets
Where it runs: Runs locally (nothing you enter is uploaded)

Enter the address you meant to pay and paste your history. Addresses that copy its visible start and end, the trick behind address poisoning, are marked character by character.

## Example input

Intended address (first line) and a pasted history

```
Intended: 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed
Mar 02  Receive  from 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed  250 USDC
Mar 03  Receive  from 0x5aaE7C5d1E0F3A6B2C9e4D8a1f7B3c6e9A2deAED  0 USDC
Mar 03  Send     to   0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359  10 USDC
Mar 04  Receive  from 0x5aAe…eAed  0 USDT
```

One lookalike is found: it shares the first 4 and last 4 characters after 0x with the intended address, and the differing middle is marked. The shortened 0x5aAe…eAed entry is listed for a manual check.

## FAQ

### What does the Address Poisoning Checker compare?

It extracts every address from the pasted text and compares it with the address you meant to pay, after the fixed prefix such as 0x, T or bc1q. Addresses that share at least the first three and last three characters but differ in between are flagged as lookalikes, with the differing characters marked.

### Can it miss a poisoned address or flag a harmless one?

It only sees addresses present in the text: shortened forms such as 0x5aAe…eAed can be compared on their visible ends only. An unrelated address can share a few characters with yours by chance, so short matches are shown as partial matches, not as lookalikes.

### Is my wallet history sent anywhere?

No. The comparison runs in your browser; the pasted text is not stored or sent, and the tool does not query any blockchain or explorer.

## Related tools

- [Address Checksum Validator](https://phishdestroy.io/developer-tools/address-checksum)
- [Signature Request Inspector](https://phishdestroy.io/developer-tools/sign-inspector)
- [Homoglyph Checker](https://phishdestroy.io/developer-tools/homoglyph-checker)
- [BIP39 Decoy Seed Phrase Generator](https://phishdestroy.io/developer-tools/bip39-decoy-generator)

All tools: https://phishdestroy.io/developer-tools