"for your own safety" as if you were an avocado on a stick floating in space. Fakaf

Technically, in the TNG episode, the phrase is "a matter of internal security", not "a matter of national security" [1][2].

According to Marc Neocleus in "Against security", the term "national security" is quite new, dating to the early cold war (see [3] and search for 'I like your words "national security ').

[1] https://memory-alpha.fandom.com/wiki/The_Hunted_(episode)

[2] https://www.youtube.com/watch?v=MhJldILZhJ8

[3] https://www.radicalphilosophy.com/article/against-security#fn10