Bajoran Intelligence was Bajor's intelligence agency. They were skilled at breaking Cardassian codes.
In 2369 Major Kira Nerys searched the Bajoran Intelligence net about information of the Kohn-Ma. (DS9: "Past Prologue")
In early 2372, Bajoran Intelligence contacted Deep Space 9 to inform them that the Klingon Empire had broken through the lines of the Cardassian fleet and its ships were nearing Cardassia Prime. (DS9: "The Way of the Warrior")
A few weeks later, Bajoran Intelligence discovered the Klingons were looking for weaknesses in the star systems along their borders. (DS9: "Hippocratic Oath")
A short time later that year, Bajoran Intelligence supplied Kira Nerys with standard Cardassian command codes from 2366, when Kira was searching for the Ravinok. (DS9: "Indiscretion")
Later in 2372, Major Kira agreed to go to the Cardassian outpost on Korma, on the behest of Shakaar Edon, to share Bajoran intelligence with the Cardassians about the Klingons. (DS9: "Return to Grace")
In 2373, Deep Space 9 relayed a code from Enabran Tain to Bajoran Intelligence, but they had difficulty breaking it. (DS9: "In Purgatory's Shadow")
After Dukat revealed that Tekeny Ghemor was involved in a massacre at the Kiessa Monastery, he told Kira Nerys that Bajoran Intelligence would be able to verify it. (DS9: "Ties of Blood and Water")