ChainCatcher message, on-chain detective ZachXBT reminds users to enhance account and fund security. He stated that currently Yubico (security keys), Proton (email service), and Tutanota (email service) are all having discount promotions. Proton supports Bitcoin payments, while Tutanota can use Monero (XMR) to purchase gift cards through the official partner ProxyStore.In addition, hardware wallet brands Trezor and Ledger have some products on promotion as well. ZachXBT advises users to avoid using Gmail or SMS 2FA (two-factor authentication) and to switch to security keys or hardware wallets for fund storage as soon as possible.