CEO: Mike Janke
Silent Circle technology encrypts video, phone, text and email. The company was founded by Phil Zimmerman, who developed the PGP encryption code-base. PGP was acquired by Symantec in 2010. The company's encrypted data-transfer service was launched with the Silent Text smartphone app that allows users to send files of up to 60 MB. The data can be set to be deleted from both devices after a preset period. The company also provides a Silent Circle voice service.