I'm really devastated. My nephew just called me and told me all his cryptocurrency is gone -- valued over $40,000. He has spent years earning it and resisting pulling it out, hoping he could eventually use it to pay for his college education.Here are the facts:- He has a Ledger Nano S wallet.- That wallet had 4.77 LTC, 4.48 ETH, and 0.73 BTC.- The Ledger generated a passphrase containing 24 words.- He recorded that passphrase on a piece of paper and hid it.- No one had or has access to that paper.- That passphrase (those words) were NEVER entered anywhere.- On February 24th at 5:45 AM Eastern Time, the BTC was stolen.- On the same day, at 6:46 AM and 6:48 AM, the ETH and LTC, respectively, were stolen.- He also has a Trust Wallet.- He had $1500 worth of NPXS and $1000 worth of TRX in that wallet.- On February 24th at 6:48 AM and 6:55 AM both of those were stolen.- The passphrase for the Trust Wallet is saved as a screenshot on his iPhone.- His iPhone has not left his possession.- His iPhone has a 6 digit passcode.The recipient address for the BTC is: 3EP2Bq6yMpXQc3TvoxLtwDsd1tg2A59CJsNote: Both wallets were hacked on the same day at around the same time. Both had separate passphrases.Can someone please shed some light on what can be done, if anything? How were both wallets compromised at the same time?! If nothing can be done to retrieve the crytpo, what can be done to prevent this from happening in  the future.