Just come it to my mind. is it possible? to get hook into your wallet and send some to another wallet?

Any computer on a network with Internet access is hackable and so if you're careless enough to leave your private keys on a public computer or an unprotected computer then you're at risk and you can be hacked in no time and of course funds can be transferred between wallets.
The computer will be hackable if you accidentally downloaded other hacking software or if your computer infected by a virus that gets data in your computer so if your computer is infected and you login your details or save your wallet in your computer it is posible to get hacked by hackers.