Tessian and Egress got acquired. Email was never the whole problem.
Proofpoint took Tessian, KnowBe4 took Egress, and both are now inside platforms built for firms ten times your size. Email is less than half of how a document leaves. DataGuard checks every way out and keeps the record of what left.
What Tessian and Egress did well
Both products earned their market position. They solved a real problem: law firms were sending documents to the wrong people, and the existing tools (training and Outlook rules) were inadequate.
- Outbound email misdirection protection (wrong recipient detection)
- Employee coaching and security awareness nudges
- DLP policy enforcement on email sends
- Retroactive message recall for misdirected emails
What the acquisitions mean for law firms
Tessian
Acquired by Proofpoint (2023)Tessian's standalone product was absorbed into Proofpoint's enterprise security suite. Small and mid-size law firms that adopted Tessian as a standalone solution are now evaluating enterprise pricing and complexity they didn't sign up for.
Egress
Acquired by KnowBe4 (2024)Egress's outbound email protection features are being integrated into KnowBe4's security training platform. Firms that used Egress for document-level protection are finding the integrated product is moving toward awareness training, not document privacy.
Every way out, not just email
Tessian and Egress focused on outbound email. They did email well. But email is less than half of how law firms share documents today. SharePoint shared links, OneDrive folder access, Teams file transfers, and direct SharePoint exports all move documents outside your firm without going through email at all.
DataGuard covers the rest of that surface. Files going out through a connected source are checked on the way out, whatever the channel, and what the check finds goes to your reviewer to clear before it reaches the recipient. That includes the email case Tessian and Egress solved, and the sharing routes they did not.
If you relied on Tessian or Egress for outbound email protection, DataGuard replaces what they did and extends it across your entire cloud environment.
Three steps. No new tool to learn.
DataGuard reads every outbound document where your team already works. The judgment stays with your reviewer. What goes away is the page-by-page read that used to come before it.
DataGuard lives inside the tools you already use
No new tools for your team to learn. DataGuard installs directly into Outlook, Gmail, OneDrive, Google Drive, SharePoint, and Clio, the tools your team already uses every day.
Every outbound document is read first
When a document is about to leave the firm (via email, a shared link, or a file attachment) DataGuard reads it against your firm's policies before it reaches anyone outside, and marks what should not go out.
You confirm. The clean version goes out.
SSNs, diagnosis codes, government IDs and other restricted content come back proposed for removal, each with the rule behind it. Your reviewer approves, edits, or overrides, and the audit log records the decision either way.
See what replaces Tessian and Egress.
20 minutes. Email, SharePoint and OneDrive sharing: everything your old tool covered, and the rest.