# Address Filters

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**Available on all tiers** — Free tier: 10 filtered actions per day, 5 allowlisted addresses. Premium: unlimited. [Compare plans →](https://securitybot.gitbook.io/securitybot-knowledge-hub/plans-and-pricing/plans-and-pricing)
{% endhint %}

SecurityBot actively scans messages for cryptocurrency wallet addresses and deletes any that are not explicitly allowed. This helps prevent common scam tactics such as fake giveaways or phishing attacks using wallet addresses.

Supported blockchains:

* **Cardano (ADA)**
* **Ethereum-compatible chains (EVM)**
* **Bitcoin (BTC)**

***

## How It Works

When address filters are enabled, any message containing an unapproved address will be automatically removed. These filters are **on by default** and apply server-wide unless exemptions are configured.

### Customize Address Filters

You can enable or disable address filters per chain using:

```
/chat_filters address toggle
```

Select from:

* Block Cardano Addresses
* Block Bitcoin Addresses
* Block EVM Addresses

Use this command to toggle filters on or off as needed. You can also view the **whitelist size** to see how many addresses are currently approved.

To whitelist a trusted address:

```
/chat_filters address add address: [address]
```

To remove an address from the allowlist:

```
/chat_filters address remove address: [address]
```

To view your current allowed addresses:

```
/chat_filters address view
```

***

### Best Practices

* Only whitelist wallets you trust 100%
* Periodically audit your whitelist using `/chat_filters address view`
* Remove outdated or compromised addresses using `/chat_filters address remove`
* Combine address filtering with **chat alerts** and **log channels** to catch patterns quickly

***

Next up: Learn how to manage ADA Handle sharing with [ADA Handle Filter](https://securitybot.gitbook.io/securitybot-knowledge-hub/bot-guide/chat-filters/ada-handle-filter).