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

# Safeguarding user data

> How Prequel handles, isolates, and avoids retaining the data it transfers.

As a matter of security and compliance, Prequel does not store nor retain any of the data it transfers. Transferred data only lives within the ephemeral worker tasked with running a specific transfer for the duration of the transfer and up to 24hrs afterwards. These workers are sandboxed from each other; a dedicated worker is spun up for each transfer and wound down afterwards. In order to facilitate incremental transfers, Prequel does store the timestamp corresponding to the most recent `last_modified_at` value for each transfer run. We consider this to be safe metadata rather than user data.