“Corruption, as defined by the World Bank, is a form of dishonesty or criminal offense undertaken by a person or organization entrusted with a position of authority, to acquire illicit benefit or abuse power for one's private gain.” — Wikipedia

“As a general rule, governments that are accountable to free parliaments, a free press, and civil society organizations provide economic welfare efficiently and at low levels of corruption. Governments unrestrained by such institutions are typically characterized by low levels of economic
welfare and by high levels of corruption.” — Hamas: A Social Welfare Government or War Machine?

What checks to corruption (if any) are there in the Palestinian Authority, and how effective are they?

(Parallel question about Hamas)