hello everyone.. Instead cold storage a lockdown mode address or Frozen Storage address could be added to bitcoin? and I have 3 important questions.. I hope you are willing to answer these questions along with the reasons.

1. Attacker might able to steal private key after user make a transaction from special address,but how do you plan to prevent this accident?
2. How do someone veto a transaction which made by attacker where we can verify who's the owner or attacker without compromise owner privacy?
3. Assuming a transaction is reversed, that means blocks would become invalid since it's hash (along with all next blocks) will become invalid? How do you plan to solve this problem?

The price of US benchmark crude oil, West Texas Intermediate (WTI) jumped 1.5% to US$ 117 per barrel after briefly touching US$ 130 per barrel. The global benchmark Brent oil rose to US$ 121 per barrel, after briefly touching US$ 139 per barrel, the highest level since July 2008.