Aircrack-ng is a tool pack to monitor and analyse wireless networks around you and put them to the test. Check how safe your wireless password is or unlock your neighbour's wireless network. It can guess WEP (Wired Equivalent Privacy) and WPA (Wi-Fi Protected Access) passwords.
Once you run the program, you'll be able to capture data packs of a certain network thanks to one of the tools in the pack: Airodump, an sniffer that willl collect data packages so you can exam them later. Once you'll have captured enough packages, you only have to load them on Aircrack and it will decode them and will tell you the password of that wireless network so you can access it.
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40 reviews 
Comments
I don't know how to use the program, could you help me?
It's very good, it has been very helpful to me.
it's what I needed, thank you
I can't get it to work, I don't know how to make it search for Wi-Fi (there are many). I would need someone to please explain in detail how it works or if there is still something I need to add. Thank...See more
Regarding aircrack, I also installed it, but an additional program is needed to download packages. Also, there is a compatibility issue with the network card; for example, it doesn't work on my Toshib...See more
It is useful, but you have to look for tutorials on the internet to learn how to use it because it is not easy at all. Hopefully, someday they will improve it and make it easier to use.