Re: Why is WiFi Unsafe?
IMHO, WiFi is so insecure because it is an openly 'heard' transmission.
Let's say there's a large company with several thousand employees. They most likely have an Intrusion Detection|Protection System (IDS/IPS) on their internal network. These just sit there and analyze traffic to detect breach attempts, among other things. As soon as the 'hacker' plugs into the network (which he would have had to gain access to the building(s), and plug in somewhere), his traffic is under scrutiny and he is more likely to be discovered, several factors permitting.
Now imagine he's sitting in the parking lot with his WiFi antenna set to Promiscuous mode (just listening and capturing data). He can capture (probably encrypted) communications to his hearts content. With a few special tricks, he can capture the encryption key too (it's very easy on WPA2, too). Then, it's just a matter of time before he brute forces that key, probably on a different/dedicated setup at his home. All this while the company has no idea.
It's not always that WiFi encryption/methods are weaker/inferior... It is largely due to the constant availability of an opening, and how incognito attackers can do their company 'footprint'ing.'
There are obviously more factors than just the above, but in a perfect environment where everything you can possibly do is done, that is something you can't just turn off, especially if your wireless network supports a critical business function.
Humans are the only creatures that won't live up to the their potential. Give everything your all. When you die, die on E.
So I ask you, what do you intend to do now?