User blog comment:Dragonjet/KanCo! Tools/@comment-139.194.232.126-20140320100927/@comment-1820055-20140320102533

if the kancolle viewer you are referring to is accessing the game internals to give you more features, thus putting you at risk, this tool does not. the aim of this tool is just to let you play (normal gameplay) via API link. this does not access your game internals, neither send synthetic requests directly to the game server.

playing here is just equal to playing in a stand-alone flash player. if this is not safe, no other third-party program is safe.

difference with stand-alone flash player? you play directly from chrome. it remembers your API link and lets you play anytime, in 1-click.