kept secret or very confidential
秘密にされているか非常に機密 (himitsu ni sarete iru ka hijou ni kimitsu)
"The project is still hush-hush, so don’t mention it."
"プロジェクトはまだ秘密ですので、言わないでください。" (Purojekuto wa mada hush-hush nanode, iwanai de kudasai.)
to prepare an official document or plan
to begin again without any advantage or preparation
a hacker who uses skills ethically to improve security
the responsibility of developers and organizations to ensure...
to work closely and effectively with someone
to betray someone for personal gain