An "International" audit firm favored by bureaucrats in go.ke and NSE listed firms lost (due to internal fraud) about 40M in 2013 in one small incident. What struck me most is when one of the fixers noted even data storage (backup records) were missing. This is an "International" firm consulted (favored over our niche firms stuck in Kenya and therefore more patriotic) about ICT Policy in Kenya.

Finance professionals have told me more than once, crooks (even in international organizations) favor one big firm, one big deal, to solicit bribes from one party - not from 3 or 4 specialist/niche firms - increasing their demands (risks) for kickbacks from different quarters ):

http://www.businessdailyafrica.com/Safaricom-cancels-Sh1bn-tender-in-staff-bribery-claim/-/539546/2634568/-/format/xhtml/view/printVersion/-/10svbgq/-/index.html