Tab browser "Sleipnir" Source code stolen

Link: スラッシュドット ジャパン | Sleipnir作者、開発マシンが盗難に遭う

Sleipnir, Japanese most popular tab-based web browser's source code is now stolen. Sleipnir is freely available but is not an open source software. Its author's laptop PC is stolen, which means its all source code is lost.