muckraking
US /ˈmʌkˌreɪ.kɪŋ/
UK /ˈmʌkˌreɪ.kɪŋ/

1.
the action of searching out and publicizing scandalous information about famous people in an underhanded way.
:
•
The journalist was known for his relentless muckraking.
•
His career was built on sensational muckraking.