Wireless-Detective is a complete and comprehensive Wireless LAN (WLAN) legal interception and forensics investigation solution for the intelligence related units/agencies such as police, military, criminal investigation department, national security department etc. In fact, it is the most reliable solution to trace, identify all illegal Wireless LAN Internet activities or transactions and preserve all of this evidence. Wireless-Detective is the smallest and lightest WLAN forensics investigation tool available. It consists of a small laptop (12.1 inches monitor screen) with Linux base OS integrated with Wireless-Detective software installed. With that small size (mobility), forensic professional can easily carry it out to any places (such as restaurant, shopping mall, airport, café, hotspot etc.) for legal interception and forensics investigation task without the notice of the public and most importantly, the suspect/target won¡¦t know about it. With the capability to scan all WLAN channels (802.11a/b/g 2.4 GHz and 5 GHz frequency bands) to capture/sniff WLAN traffic from available Wi-Fi networks, decrypt WEP encrypted (WPA-PSK optional module) wireless network (automatically or manually), decode and reconstruct captured WLAN raw data, store the raw data captured and store the reconstructed data in its database, and display them in the original and exact content format, it make it the most complete (All-in-One) WLAN interception and forensic investigation tool. Furthermore, the Wireless-Detective user management interface or GUI (accessed through a browser) is very user friendly, easy to operate and manage. Wireless-Detective is capable of decoding and reconstruct WLAN Internet traffic in real time such as Email (POP3, SMTP, IMAP), Webmail (Gmail, Yahoo Mail, Windows Live Hotmail etc.), Instant Messaging/Chat (MSN/Windows Live Messenger, Yahoo Messenger, IRC, ICQ, QQ, UT Chat Room, Google Talk Gmail, Skype Voice Log), FTP, P2P, Online Game, TELNET, HTTP (URL Link, Content, Reconstruct, Download/Upload, Video Stream) etc. After the decoding and reconstruction of the captured traffic, it displays them in its menu list according to different protocol/category types in exact or original content format. With capability of search by keyword or search by parameter (conditional search), it allows further forensics investigation and analysis to be carried out. This has proven that Wireless-Detective is an All-in-One system (all WLAN investigation work is conducted in one machine) that can speed up the entire investigation process.