It is vulnerable to hacking attempts though. Whatever you do, just ignore the Electrum 4.0 update message that you might get. There is no 4.0v.
Electrum was vulnerable to phishing messages being sent by fraudulent individuals. This is no longer the case since the 3.3.4 version.
Whoever is using older versions than 3.3.3 should donwload the newest version from the official site to even avoid the possibility to receive such a message.