Take it easy mate, before you start panicking, I heard that old Bitcoin holders are waking up their bitcoin wallet due to possible vulnerable private key exposure, some old wallets are losing their Bitcoin, getting stolen by a lone hacker, the news has spread to the whales around the world and they are moving their Bitcoin into a new wallet.

If I remember correctly, years ago so many people store their Bitcoin private keys on their mail and some online cloud storage services, I think that's how the whale's private keys are leaked, the lesson that everyone should learn from this is to never store your private key online, most times you believe they are safe because no one has access to your mail account but the fact that the private keys are online, they aren't safe completely.

Also, I will like to advise you to move your funds aka assets to a new wallet address every year, I think it's for the greater good, you never know who is watching, even under your roof.