Crossword Help

[badwolf29]

last word to figure out. there are two clues. ‘highly private’ is the easy clue and the cryptic one is ‘confidential chief to leak endlessly’. it’s 2 words (3,6). i’m absolutely stumped as to what it is. here are the letters it contains: __O __ I __ C __ E __
any help would be appreciated :)

[Mamyalynne]

Top secret

[Mamyalynne]

Top(Chief) secret(e)

[Toorak]

Top secret(e)

[badwolf29]

for those who said top secret would be correct. that's what I originally thought but I had the wrong letters in the rest of the boxes which was why I thought it was wrong :0