Crossword Genius

Low-down on endless tinfoil (4)

Ross

I believe the answer is:

info

I'm a little stuck... Click here to teach me more about this clue!

'low-down' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'endless tinfoil' is the wordplay.
'INFO' is hidden in amongst the letters.
But, I am uncertain how the hidden word is indicated.

'on' is the link.

Can you help me to learn more?

(Other definitions for info that I've seen before include "Knowledge (colloq.)" , "Data received and understood (abbr)" , "details" , "counsel?" , "Data (abbrev.)" .)

I've seen this clue in The Mirror.
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