My ETH funds were stolen and I am sure I didn't give out or handled carelessly the Mnemonic phrase, JSON file, private key nor the key store. Please I want to know ways by which a cryptocurrency wallet could be hacked.
There are many reasons for hacking:
You exposing your wallet information (Mnemonic phrase, JSON file, private key or key store and other)
+ Using 3rd party software is not secure
+ A mistake when using your wallet.