Snowflake recently identified an issue affecting JDBC drivers that can result in data being uploaded to an encrypted stage without the additional layer of protection provided by client side encryption. The issue, which affects only a subset of accounts hosted on Azure and GCP deployments (AWS deployments are not affected), manifests in instances where customers create a stage using a JDBC driver with the CLIENT_ENCRYPTION_KEY_SIZE account parameter set to 256-bit rather than the default 128-bit. The data is still protected by TLS in transit and server side encryption at rest. This missed layer of the additional protection is not visible to the affected customers.