It was once said:
It would take the combined processing power of every computer in the world thousands of years to crack 4096-bit encryption.
In a more general context (outside of encrypted secure website traffic/data) it has also been said:
Data with 4096-bit encryption (only protected by a password) could still be compromised within seconds.
How? Human error.
Easy pass-phrase, written down password, re-used password... etc. basically, always be on the lookout for the weakest link.
Trust the technology, but never trust the weak link - the user!
This FAQ was written by James D. Ford GAICD | Principal Solicitor, Blue Ocean Law Group℠.