Does Kraken ask for your SSN?

Hello there, I'm curious about the privacy measures implemented by Kraken, a renowned cryptocurrency exchange. Specifically, I'm wondering if they request users to provide their Social Security Number (SSN) during the account setup process or at any point thereafter. Could you please clarify Kraken's policy on collecting and storing such sensitive personal information? It's important for me to understand the level of security and privacy I can expect when using their platform. Thank you in advance for your insights.