Acquired secrets via home telephone (5)
I believe the answer is:
intel
'acquired secrets' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'home telephone' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'telephone' becomes 'tel' (short for telephone).
'in'+'tel'='INTEL'
'via' is the link.
Can you help me to learn more?
(Other definitions for intel that I've seen before include "silicon chip manufacturer" , "Chip manufacturer based in California" , "military info" , "US chip manufacturer" , "Information" .)