That can happen, the majority happens because of their own carelessness. Teledor in putting down wallet storage data, cannot keep wallet privacy data from people around. Careless in using the internet so that it provides a gap for hackers to be able to browse wallet data. Everything that smells online is quite risky, so be as careful as possible in accessing the site.
What could be the possible modus hackers are doing to invade your wallet? For me it is for the user that got into a phishing websites that get out private address unknowingly. So we got to be very careful on not to fall into a trap and if possible spread your wealth in case to fell victim to scammers, there is something left and not all are gone.