I travel a lot, so I most of the time get Wifi from Hotel or Cafes. I payed attention to the fact that some Wifi does not have security password ! Here is a screenshot of the type of security I found :
I usually trust WPA2 Personnel.
Please, I have heard that it is possible to "sniff" the network packets if the hacker is on the same network. not sure if it is true. So I asked this question to get to know more about the best practices concerning Wifi: do I connect to only
WPA2 Personnel ? What is WPA ? is there small utility application that allow me to check the information about the surrounding Wifi .... on macosx ?