Protect every client file. Prove it.
Your team keeps moving at full speed in the tools they already use. DataGuard removes sensitive client information from every document and email before it leaves the firm, including the privileged passages you can't un-share. Anything uncertain routes to a human first, the law is cited on every redaction, and it's all logged. Discovery, medical records, settlement packages, protected and provable. Nothing gets blocked.
Share the work, not the privilege.
Test it on a real document. Analyzed by Sidian's private models, never stored, never shared with third-party AI.
No IT team required. 5-minute setup. 30-day free trial.
One accident is all it takes.
Most leaks aren't break-ins. They're an authorized person sending something they shouldn't, and a privilege waiver can't be taken back. One wrong attachment, one over-shared file, and it's gone, sometimes the case with it.
of data leaks are accidents, not attacks
Ponemon 2025
average cost of a U.S. data breach
IBM 2025
can waive privilege, sometimes across the entire subject matter
FRE 502
Enterprise liability. Solo-practice controls. And with no record of what happened, you can't even mount a defense.
Carriers and clients are starting to ask
Malpractice insurers and corporate clients increasingly want proof of how you protect confidential data. Prove it and you keep the work; can't and you lose it.
Your staff are already using AI
Case facts are getting pasted into ChatGPT and Copilot today, with no record. An NDA binds a person, not an assistant.
Move fast. Stay protected. Prove every call.
Every other tool makes you choose: lock things down and slow the firm, or move fast and hope. DataGuard ends the trade-off.
Move at full speed
It's a checkpoint, not a gate. Clean work flows through untouched, no review queue, no new app, inside the tools you already use.
Protect what matters
Sensitive client data is caught and removed on every share, inside the firm and out. The wrong thing can't leave; the wrong person can't open it.
A human stays in control
Anything uncertain goes to your reviewer to approve, edit, or override in one click. Judgment stays with the lawyer, and every override is logged.
Defensible by record
Every decision carries the rule behind it and a tamper-evident log, the difference between presumed negligence and a footnote.
Leaks stop here
The accidental disclosure that triggers a Bar complaint or a malpractice claim simply never goes out the door.
Fast and safe, at the same time. That's the superpower.
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.
A human in the loop, without the bottleneck.
Five steps. Zero changes to your team's workflow.
Your paralegal shares a document as normal.
Nothing changes about how your team works. DataGuard runs in the background inside the tools you already use.
DataGuard checks it against your firm's policy.
Full entity recognition across names, identifiers, financial and medical detail, and privileged passages. Not keyword matching. Measured against your duty of confidentiality (ABA Rule 1.6), privilege, and the privacy laws you answer to (HIPAA, CCPA, and more).
Routine redactions happen automatically. Anything uncertain goes to your reviewer.
One-click approve, edit, or override. Judgment stays with a human, and routine sends never wait in a queue.
The clean document goes out.
Only the sensitive content is removed. Case facts, legal detail, and everything else stay intact. Your team sees exactly what changed and why.
Every decision, engine and human, is logged with its basis.
A complete, defensible audit trail with the rule behind every redaction, ready for any compliance review or State Bar inquiry.
Your data stays yours. The proof comes built in.
We don't replace your stack. We wrap it. DataGuard connects to Clio, Microsoft 365, and Google Workspace in under five minutes, and turns your data handling into something you can show a carrier or a client.
Your files stay where they live
Microsoft 365, Google Workspace, Clio. DataGuard reads your files where they already are and never relocates or keeps a second copy. It connects in under five minutes.
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.
Attorney-client privilege stays intact
No consumer AI in the loop, no separate vault to move files into. Your content is read by Sidian's private models, then discarded, leaving only the record.
Rule 502(b) protects an inadvertent disclosure only if you can show you took reasonable steps. The record is that proof.
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.