We will never ask you to share your private keys or wallet seed. Never trust anyone or any site that asks you to enter your private keys or wallet seed. We do not collect any Special Categories of Personal Data about you (this includes details about your race or ethnicity, religious or philosophical beliefs, sex life, sexual orientation, political opinions, trade union membership, information about your health and genetic and biometric data). Nor do we collect any information about criminal convictions and offenses.
If privacy is one of your concerns, you may be interested to know that Marvin says, "My preferred cryptocurrency projects trying to address some of the privacy limitations of Bitcoin (BTC) and Ethereum (ETH) are, respectively, Decred (DCR) and Secret (SCRT)."