Offer ends March 13.
As for on-device security, the system is designed to be as unrevealing as possible as to whether it has been used for secure messaging or not. Message storage vaults used by the app are encrypted, maintained at a regular size, and are routinely modified at regular periods whether covert messages are being sent or not. Unless the decryption passphrase is known, there is no obvious evidence that the app has been used to send any messages at all.，更多细节参见Snipaste - 截图 + 贴图
。关于这个话题，谷歌提供了深入分析
�������ǂނɂ́A�R�����g�̗��p�K���ɓ��ӂ��u�A�C�e�B���f�B�AID�v�����сuITmedia �r�W�l�X�I�����C���ʐM�v�̓o�^���K�v�ł�
В России призвали отпустить больную раком Лерчек из-под домашнего ареста14:50，更多细节参见超级工厂