Who brought news to Brutus and Cassius?

The news brought to Brutus and Cassius primarily came from a character named Messala, a loyal friend and soldier. In Shakespeare's play "Julius Caesar," Messala delivers updates regarding the growing power of Octavius and Antony, as well as the defeat of Brutus and Cassius's forces. His reports are crucial in shaping the decisions and strategies of Brutus and Cassius as they prepare for battle.