Private equity-backed data analytics-based roaming and network security company Mobileum has picked up network roaming test and fraud detection company Sigos. Terms of the deal were not disclosed. Sigo, which provides revenue assurance and fraud detection as well as active testing, says that it has the largest roaming and interconnection test system in the cloud, [...]The post Test and Measurement: Mobileum acquires Sigos appeared first on RCR Wireless News.