"Many Bothans died to bring us this information..." ~ Mon Mothma
As an extension of the Bothan Way, the Bothan Spynet was developed circa 300 BBY as a means to collect intelligence on potential political enemies, which to Bothans, includes all individuals, species and governments. The Spynet consisted of thousands of spies, informants and data collection droids that fed into a centralized command structure.
Together its military component, Bothan Military Intelligence, the Spynet was one of the most comprehensive and thorough intelligence outfits in the galaxy, serving Bothan interests first and selling its services second. The Spynet, under the leadership of Koth Melan, proved crucial to the Rebel Alliance in providing information on Imperial military plans, commerce shipping schedules and personnel intelligence, although their services were also bought by the Empire and fringe elements. Their usefulness culminated in the capture of plans for the second Death Star. After the Galactic Civil War, the Spynet continued to operate independently of New Republic Intelligence.
The Bothan Spies used a variety of techniques for infiltration. Some of them were small portable cloaking shields, and a weapon that produced gases to incinerate flesh.
The Spynet is not always comprised of Bothans. Many species participate including Rodians, Sullustans, and Twi'leks.