You didn't mention any make model or OS, But you should be on WPA2 at least, But there are cracks for that.
I had to unplug my modem and router and plug them in again when my internet service was interrupted. I accidentally pressed "WPS". My desktop PC doesn't have a wireless card. I didn't have my printer or any other device hooked up at the same time. Am I correct in assuming I shouldn't worry about my passwords for e-mail and Facebook being compromised? Everything works fine