China, Africa's supposed all-weather friend, built the African Union headquarters in Addis Ababa and handed them over in 2012. Little did anyone know or even suspect that the edifice was bugged and nothing done within it would be private. Every night, from around midnight and 2 am, data usage peaked mysteriously though very few people were within the building. No one would have known that data was being sent to Shanghai, China: confidential data, conversations, secrets, plans and strategies best kept within the confines of the African Union. China was the fly on the African Union's wall.
According to Le Monde (link in French), several sources within the AU confirmed, "It's a spectacular leak of data, spread from January 2012 to January 2017." The AU, after discovering it, quickly engaged experts from Algeria and Ethiopia who then remedied the situation but only after five years of Chinese tapping. Microphones were found in desks during the sweep.