Hi, have you ever thought this?
You know that, to import a wallet you need the private key or your seed. Taking as example the private key (the 52 letters key). It could exist the possibility someone create a software whose function was to try thousands of times to find the private key till it is be done.This would be like the process to find the new block in mining, anyway you can try the times you want in order to find it.
I think this could be a weakness, correct me if I am wrong.

Or comment if you have a kind of solution for this...
Regards!
Yes there is a possibility that a software or a device could be made in the future to bypass the security of private keys of cryptocurrency wallets but as of now there are none and the only way they can access and steal your btc from your wallet is through breach of your security details maybe via phishing sites or virus and malwares.