Stop sensitive client information from leaving your firm.
DataGuard removes it from every document and email before it leaves, and logs exactly what changed.
No IT team required. 5-minute setup. 30-day free trial.
What brought you here?
Most law firms find DataGuard after a specific moment. Find yours.
A near-miss just happened
A paralegal sent something to the wrong party, or almost did. You need protection in place before the next share goes out.
See how close calls get prevented →Your insurer or a client asked about data security
A malpractice insurer, a corporate client RFP, or a referral source asked about your document security process. You need an answer.
What ABA Rule 1.6 requires →Manual redaction is eating paralegal hours
4–6 hours per case, 20 active cases, every month. Sidian runs your firm's policies across the whole document set and shows the rule behind every redaction.
See how secure sends works →You tried Purview or another tool and it didn't work
Microsoft Purview blocked the wrong things. A DLP tool was too complex to maintain. You need something that actually works without an IT team.
Why Purview fails law firms →Three steps. Zero changes to your team's workflow.
Your team shares as usual
DataGuard works inside Outlook, Gmail, OneDrive, Google Drive, SharePoint, and Clio.
DataGuard checks the document
It identifies personal information, medical data, financial information, government identifiers, and potentially privileged passages. Everything is measured against your duty of confidentiality (ABA Rule 1.6), privilege, and the privacy laws you answer to (HIPAA, CCPA, and more).
The clean document goes through
Routine redactions happen automatically. Anything uncertain goes to an authorized reviewer. The recipient receives the cleaned document, seeing only what they are allowed to see, and every decision is recorded.
And it pays for itself on day one
to review a 500-page set for PII by hand
in paralegal cost before a page is shared
for DataGuard to scan and redact it
Everywhere your client data moves.
DataGuard isn't a bundle of separate products. It's one platform enforcing one policy across every place client data lives, so protection is consistent and every move is defensible.
Your team
Ethical walls and per-matter access, enforced automatically. Each person sees only the matters their role allows.
AI tools
Client identifiers stripped before staff paste into ChatGPT or Copilot. The model never sees them.
The outside
Every email and every disclosure set goes out scoped to its recipient, the sensitive parts removed and the law cited. 100,000 pages at a time.
One policy. One audit log. Every move defensible.
Who owns the data, and where it lives.
DataGuard wraps the stack you already have. Nothing is relocated, nothing is retained, and no consumer AI is ever in the loop.
Your files never move
DataGuard reads your files where they already live: Microsoft 365, Google Workspace, Clio. It never relocates them and never keeps a second copy. You own the data before, during, and after.
Never third-party AI
Analysis runs on Sidian's own private models. No OpenAI, no Anthropic, no consumer AI ever sees your content. Documents are analyzed in memory and discarded, never stored, never used for training.
You own it, we only protect it
There's no separate vault to move files into. Your content is read by Sidian's private models, then discarded, leaving only the record. Attorney-client privilege stays intact.
Works inside the tools you already use.
No new app for your team to learn. DataGuard connects in under five minutes and runs in the background.
FAQ
Because the cost of one accident has gone up and the odds haven't gone down. 55% of leaks are mistakes, not attacks, and you don't get to un-send a disclosure. Meanwhile malpractice carriers and corporate clients are beginning to ask for proof of controls, and your staff are already pasting case facts into AI tools. The firms that get ahead of this do it before the near-miss, not after.
Yes. DataGuard handles routine redactions automatically so nothing waits in a queue, but anything uncertain is routed to your reviewer for a one-click approve, edit, or override. Judgment stays with the lawyer. Both the engine's decisions and every human override are logged, so the record is complete either way.
Purview is built to block shares and flag violations after the fact. It doesn't redact, and it doesn't let the document through. DataGuard removes only what shouldn't leave and sends the rest. Your paralegals stay productive. Nothing gets blocked. The two tools serve different purposes.
Yes. That's the internal-access layer, live today. The same policy that decides what leaves the firm also decides what each person can open inside it. Staff see only the matters their role allows, conflict screens are enforced automatically, and every access is logged.
Your team is already using AI. DataGuard's AI privacy layer strips client identifiers from text before it reaches the model, so the assistant never sees the sensitive details. You keep the productivity without creating an unlogged disclosure.
It's analyzed in memory and immediately discarded. Nothing is stored as content, logged with its sensitive values, or used for training. Analysis runs only on Sidian's own private models, never OpenAI, never Anthropic, never any third-party AI. Attorney-client privilege stays fully intact.
Small firms are exactly who this was made for. You carry the same client data and the same duties as a large firm, with less margin to absorb a hit and no enterprise IT team. DataGuard gives you the data-governance standard used in highly regulated government systems, deployed in minutes, with no configuration project.
Under 5 minutes. It connects to the tools you already use. No IT team required, no configuration project, no training required. Your team is protected from day one.
Simple, public pricing.
From $39 per user, per month, with your first month free. A document is one file, any length, so a 10,000-page production counts as one.
See plans and what's includedSee it catch a real leak in 15 minutes.
Book a quick call with Ben, Sidian's founder. Bring a document from your practice area and he'll show you exactly what DataGuard catches, what flows through untouched, and the record it leaves behind. No slides, no sales pitch.
Get ahead of the near-miss, not after it. 15 minutes, no commitment.