Arcai.com start since 1999, as a networking expert and offering advices to network/security query.  products includes NetCut, netcut defender

Arcai.com is the very first one discover ARP weakness, and publish it to Microsoft/Cisco/Sun/IBM. also IEEF.   Through no response from the industry owner of ARP.  arcai.com release the tool that help detect and protect from ARP spoofing attack.  It has been running for over 10 years since first release.

Arcai.com is still continue to support/develop new feature to service the public.