If you pay any attention to the word security you definitely got password on your Wi-Fi. And this is it ? Only password? I got bad news for you. Any IT professional with some spare time or/and motivation can access you Wi-Fi, and after get access in your home or company network. So available nowadays and uses as something natural like air or water Wi-Fi is not so simple thing.
To maintain properly secured Wi-Fi is a hard job. Somebody think that they got nothing to hide, and this misunderstanding could cost them nightmares until the end of their life, especially if your PC connected permanently to targeted Wi-Fi. What is more important that Wi-Fi is not the cable you can control access to. Anybody can try to attack the Wi-Fi you are using, from your beloved neighbor to authorities who got some suspicious questions to you. And if you just unboxed the Wi-Fi router and following quick-step-guide installed the ISP settings and password you did nothing to protect you data. Ecpecialy if you are lazy enough to use WPS option – the best door for all type of Wi-Fi attacks.