Uhh, whatever you do, don't put your public key and personal details into a random website form. 
A startup named Unciphered is trying to make a name for itself by pushing out research claiming a number of bitcoin wallets were designed with baked-in flaws that leave a backdoor in the code that hackers could easily break open.
If you are a hodler prior to 2012 and you're still using legacy addresses, I mean damn son, why haven't you moved to segwit or taproot?
I don't mind the fud, always a good reminder to check in on your stack and if it shakes a few people out and I can get some cheap sats, even better
https://gizmodo.com/old-bitcoin-wallets-security-flaws-randstorm-unciphered-1851020470
Discussion
All that said this looks pretty serious: https://www.unciphered.com/blog/randstorm-you-cant-patch-a-house-of-cards