I believe they are only the encrypted vaults, but with the cost of compute plummeting and the inclusion of unencrypted data alongside the encrypted data I think you have reason to worry if you believe there are people who would perform a dedicated attack on you, or you are in a class likely to be identified as high value.
You should do some actual math to roughly estimate what it would take to crack a good password. Use a strong password, use a resource-intensive key derivation function, and you should feel extremely comfortable that your encrypted data will not be cracked within your lifetime.
