Digital asset security starts with protecting private keys: do not keep them on a device connected to the internet for long, and use a Hardware Wallet for cold storage. Enable two-factor authentication (2FA) on your accounts on platforms, and avoid suspicious links and mining messages. Diversify your investments: a portion for daily trading on CEX platforms and a portion for cold storage away from the internet. Set a long and unique password for each service and never share it. Keep up with software updates and act immediately if security vulnerabilities are found.