Airpost | 65 followers on LinkedIn. Update: Airpost was acquired by Box (NYSE: BOX) in 2015. The Airpost Cloud Compliance Control System (C3) is a cloud security dashboard and activity monitor that provides visibility into what consumer cloud/web applications are being used by your employees, and take direct action based on intelligence provided. With Airpost, companies can prevent compliance violations by implementing security, awareness and usage policies optimized for their business, while empowering employees to be productive.