Self-Destructing Digital Data with Vanish. Eight hour timer the document or message becomes permanently unreadable.

Vanish is a research system designed to give users control over the lifetime of personal data stored on the web or in the cloud. Specifically, all copies of Vanish encrypted data — even archived or cached copies — will become permanently unreadable at a specific time, without any action on the part of the user or any third party or centralized service.