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Use Case · Secure Email Communication

Email leaves your control
the moment you hit send.

Standard email hands over a copy and ends your authority over it - it can be forwarded, saved, and kept long after the project closes. Secure Information Exchange encrypts every message to a verified recipient and keeps permissions enforceable after delivery: revoke access, set an expiry, block forwarding and downloads, and see exactly who opened what.

Why it works.

Access tied to a verified identity - not to whoever holds the link.
Revoke, expire, and track messages after they've been delivered.
Works inside Outlook - no change to how people already send mail.
01 Why email leaks

Three reasons sensitive mail ends up somewhere else.

If you recognize one or more of these, the problem isn't your people - it's that email was never built to keep control of a message after it's sent.

/ 01

Once it's sent, it's gone

Delivery transfers a copy and ends your authority over it. The recipient can forward it, print it, save it to a personal device, or keep it for years. There is no recall, no expiry, and no way to know where the document ended up.

/ 02

Encryption without identity

A password-protected attachment protects the file in transit and stops there. Whoever holds the password is treated as authorized - including the wrong recipient added by autocomplete, or an attacker who reached the mailbox. Encryption proves the content is sealed, not who opened it.

/ 03

Shadow channels fill the gap

Files too large or blocked by policy move through WeTransfer links, personal cloud drives, and messaging apps instead. The data leaves the organization entirely, through a channel nobody logs and no auditor will accept.

Sending is not the same as sharing. Email is built to hand over a copy and stop tracking it — which is why control ends at the moment of delivery, exactly when the regulation says it should begin. Secure Information Exchange closes that gap - the recipient receives access to the content, not custody of it, with permissions that stay enforceable after it lands.

02 The TerraZone approach

Encrypt to an identity.
Keep control after delivery.

Secure Information Exchange classifies content automatically from the body, subject line, and attachments, then applies the matching policy before anything leaves the organization - so protection doesn't depend on anyone remembering which rule applies. Messages are encrypted with FIPS / AES-256 at rest, in transit, and on delivery, and recipients authenticate via OAuth2, SAML, or a one-time passcode rather than proving they hold a link.

Because access is granted rather than transferred, permissions remain enforceable after the send: set expiry dates, revoke retroactively, and grant view-only rights that block forwarding, downloading, and printing. Every open, download, and forwarding attempt is logged per identity and exported to SIEM - audit-ready evidence for GDPR, HIPAA, PCI DSS, and ISO 27001. It all runs inside Microsoft Outlook, with the Connector SMTP gateway applying the same policy to enterprise applications and automated systems.

Want the full architectural breakdown?
Policy-driven encryption · Recipient authentication · Post-delivery control · Full audit trail
See Secure Information Exchange
03 The flow

From compose to revocable delivery.

01

Classify

Content is analyzed as the message is composed - body, subject, and attachments - and the matching policy is selected automatically. The sender doesn't have to decide what protection applies.

02

Encrypt and apply policy

The message and its attachments are encrypted with FIPS / AES-256, and the policy attaches expiry, view-only rights, watermarking, and forwarding restrictions to the content itself rather than to the channel.

03

Authenticate the recipient

The recipient proves who they are through OAuth2, SAML, or a one-time passcode before anything opens. A message that reaches the wrong mailbox stays closed.

04

Track and revoke

Every open, download, and forwarding attempt is logged with the identity behind it. Access can be revoked or expired at any point after delivery, and the full record exports to SIEM on demand.

05 Where this applies

Real communication risks.Real control.

These are the email exposures teams close with Secure Information Exchange - drawn straight from regulated deployments.

Patient records, claims files, and financial statements reach recipients outside the organization under policy rather than on trust. Access is tied to a verified identity, and the sender can revoke it if the wrong person receives it.

The most common breach is also the most mundane: the wrong name selected in a recipient field. Identity-based authentication means an unintended recipient cannot open the content, and revocation closes the gap even after delivery.

Large attachments move through managed transfer instead of consumer file-sharing links, at volumes email cannot carry - under the same policy, in the same audit trail.

Auditors ask who accessed a record, when, and what they did with it. One log covers every message, open, download, and revocation - instead of fragments across mail servers and file shares.

06 The outcomes

What changes when control survives delivery.

Revocable after sending

A message sent to the wrong recipient can be closed rather than confessed - expiry and revocation work after delivery.

Identity, not passwords

Recipients authenticate as themselves, so possession of a link or a password is never enough to open sensitive content.

No behavior change

It runs inside Outlook. Security that requires no new habit is security people actually use.

Shadow channels lose their purpose

Large files and sensitive documents have a sanctioned path that works, so WeTransfer and personal drives stop being the workaround.

Visibility after the send

See when a message was opened, by whom, from where - and what they did next.

Audit-ready by default

GDPR, HIPAA, PCI DSS, and ISO 27001 evidence generated from the same engine that enforces the policy.

Send it securely.

Keep control after it lands.

A 30-minute consultation with our security architects. We'll review how sensitive information leaves your organization today, identify where control is lost, and propose a tailored Proof of Concept.

Email & data-exposure review
Tailored Proof of Concept
Revocable, tracked, audit-ready delivery
Talk to an architect

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