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 includes a small laptop (12.1 inches monitor screen) with Linux base OS integrated with Wireless-Detective software installed. With the small size (mobility), forensic professionals can discreetly carry the unit to any place (such as restaurant, shopping mall, airport, café, hotspot etc.) for legal interception and forensic investigation tasks. 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 Wireless-Detective user management interface or GUI (accessed through a browser) is very user friendly, easy to operate and manage.