- (Adnkronos) – BERLIN, Nov. 9, 2023 /PRNewswire/ — Appian (Nasdaq: APPN) recently achieved certification according to the C5 Criteria Catalogue following an independent audit. The Cloud Computing Compliance Criteria Catalogue, or C5 for short, published by the German Federal Office for Information Security (BSI), is a catalogue of security requirements for cloud services and supports customers in gaining transparency regarding the division of security-critical tasks between cloud providers and customers. According to Bitkom, 89% of