# Advanced

If you are familiar with CCMP protocol you can dive deeper to better understand how the Signer Service works under the hood. 

Consider the [Threshold Signature](https://docs.bitoftrade.com/for-developers/cross-chain-messaging-protocol/advanced/threshold-signature) section to become familiar with the TSS protocol, which is used by our [Signer Service](https://docs.bitoftrade.com/for-developers/cross-chain-messaging-protocol/how-it-works/signer-service).

Also, take a look at the [Hosted TSS Signer](https://docs.bitoftrade.com/for-developers/cross-chain-messaging-protocol/advanced/hosted-tss-signer) section to know how and why Hosted TSS Signer can be used for your dApp to make it even more secure.