Whistleblowing

noun Dishonest or fraudulent conduct by those in power, typically involving bribery

adjective Corrupt (having or showing a willingness to act dishonestly in return for money or personal gain)

• The government is cracking down on corruption within its ranks.
• Everyone knows there's corruption going on in that company.
• That politician is as corrupt as they come.
• Corruption is like a cancer that eats away at society.