> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fiber.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Privacy

Fiber guarantees the privacy of all incoming and outgoing funds. We built our privacy engine based on Railgun on Ethereum.

## Private Deposits

Every deposit into your private wallet is done via one-time addresses that are automatically generated as a key derivation or your master seed. These segregated one-time addresses keep the flow of funds opaque onchain and automatically sweep funds to your private wallet address (`0zk` address).

## Private Transfers

If you transfer to another Fiber user, we use Railgun's private transfers natively. However if you transfer out, we use a one-time address to send the funds to the other wallet, preserving privacy even if your counterparty does not use Fiber.

## Private Swaps

When buying an asset such as Gold or Silver, Fiber uses a one-time address to unshield your USD, swap and then shields the asset you bought (Gold/Silver/etc.) back to Railgun. No one can trace that swap back to your wallet.

## Private Yield

If enabled, your stablecoin are automatically depositted into a Morpho vault with exposure to only BTC/ETH lending. The morpho vault shares are then shielded to your private wallet address, ensuring fully private yield.