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 ways to lose your money.
1. You could have downloaded your wallet from the wrong site.
2. You downloaded the wallet from the correct site but during that time the site was hacked and you did not verified the wallet.
3. You clicked in a phishing link or entered your sensitive data in a phishing website.
4. Your computer was compromised and a keylogger was installed.
5. Someone close to you stole your coins.
And that is only out of the top of my head.