Edit Custom Field Values runs on Google Cloud. Google Cloud has published a security statement, which you can find here: Google Cloud Security Statement.
Our products process sensitive information. We make sure that our products are as secure as possible by attending to the following things:
TLS 1.2+ encrypted connections to and from our servers.
TLS 1.2+ encrypted connections between our servers.
HSTS to prevent downgrade attacks and cookie hijacking.
We make sure that your data is stored safely by making daily backups of your data.