startup Vaultive debuts this month with a product to remotely manage encryption of email data that enterprises may choose to keep in the .

Elad Yoran, chairman and CEO of New York City-based Vaultive, says the firm is tackling how enterprises themselves can control encryption of data they elect to keep in cloud environment. Vaultive's approach to "data encryption in use," as Yoran calls it, is based on technology designed as an encryption-proxy using the Advanced Encryption Standard that allows the enterprise to target data to be stored in the cloud and encrypt it so that it's held in scrambled form there.

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The company's first product, Vaultive for Hosted Exchange, is intended to encrypt email and attachments held in Microsoft Office 365. It's priced on a per-user per-month basis that starts at a couple of dollars and drops based on volume.

Security concerns about data in the cloud are many, Yoran points out, noting they range from the possibility that "the cloud provider might get hacked" to "a rogue employee working for the cloud provider would access my data," to "data intermingling in a multi-tenant environment."