Post-GFC changes in patterns of major bank funding resulted in the wholesale interbank loans supporting LIBOR to decline significantly in liquidity and turnover. LIBOR panel bank submissions were thus becoming increasingly reliant on dealer judgment, not actual transactions.
Major global regulators recognised that vulnerabilities could lead to benchmark manipulation and considered the implications for financial stability. In July 2013, IOSCO published their Principles for Financial Benchmarks with the aim of creating an overarching framework for benchmarks used in financial markets.
As a result of these recommendations, many IBORs around the world underwent, or are undergoing reforms, including all of the various LIBOR rates.