They've been in charge of offensive operations, that is hacking, but they've also been in charge of defensive operations, and traditionally they've always prioritized defense over offense based on the principle that American secrets are simply worth more.
Sie waren verantwortlich  für offensive Operationen, in denen es um Hacking ging. Aber sie leitete auch defensive Operationen. Traditionsgemäß hat die NSA stets die Defensive der Offensive vorgezogen, ausgehend von dem Prinzip, dass amerikanische Geheimnisse  schlicht wertvoller sind.