Secure file sharing with built-in compliance
Don't Let The Wrong Data Leave Your Firm
Sidian DataGuard is secure file sharing that checks every file on the way out. The same checks your most careful reviewer would run, without slowing anyone down.
Starting at $39/month
Claimant reports the fall at 6:40pm.
Our exposure is worse than the client believes.
SSN 412-55-0190
To: M. Kessler, opposing counsel
Partners & affiliations
Pre-flight
Your best attorney's check,run on every share.
Before a file leaves, DataGuard runs the firm's checklist against every page of it. The standard checks ship with the product. The rest are the ones your people already run from memory.
Demand_Letter_4471.pdf · 912 pages, read where it already lives
File arrives
It comes from where it already lives.
Clio, SharePoint, OneDrive, Drive, Outlook. DataGuard reads it in place. No upload, and no second copy kept in DataGuard.
Pre-flight runs
Your firm's checklist, run against every page.
Not keyword matching. It catches the account number on page 12 and the sentence on page 630 that names a minor in plain English, and it runs the checks your firm wrote alongside the ones we ship.
Exceptions only
Nine checks pass quietly. Two need a person.
Nobody reviews what cleared. The queue holds only what the checklist could not decide on its own, each with the rule and the check that caught it.
Attorney clears
Two decisions, not a 912-page read.
Keep or remove, with the governing rule attached to each one. Removals are burned into the file, not a black box a copy and paste brings back.
Cleared to send
The file goes. Control of it does not.
Every check that ran, who wrote it, and who cleared it travel with the file. You can see whether it has been opened, and revoking access stops the link from opening.
One file, every destination
One file.A different document for each person who gets it.
A file going to opposing counsel has privileged passages held back. An AI tool never sees a real value at all. DataGuard reads who the file is going to and applies the rule that governs them. Automatic on every send, and the original never changes.
One field, five destinations
SSN on Avery-intake.pdf
Your firm
The original
412-55-0190
Entitled to it
M. Kessler
Opposing counsel
removed
Not entitled to it
D. Ruiz
Paralegal
••• 0190
Last four only
Case team
Working this case
412-55-0190
Nothing removed
ChatGPT
AI tool
306-71-4488
Stand-in values
An AI tool. The real values never left.
- Name
- Riley ChenName swapped for a stand-in, the real value was not sent
- SSN
- 306-71-4488SSN swapped for a stand-in, the real value was not sent
- Medical ID
- 44-9317Medical ID swapped for a stand-in, the real value was not sent
- Account
- 5514-0863Account swapped for a stand-in, the real value was not sent
Claimant reports the fall at 6:40pm.
The file as it sits in your system.
- Name
- Jordan Avery
- SSN
- 412-55-0190
- Medical ID
- 88-4102
- Account
- 4829-1145
Claimant reports the fall at 6:40pm.
Our exposure is worse than the client believes.
Which rule applies
Decided by who is on the other end, not by the file alone.
The same clinical page is ordinary detail to the case team and a HIPAA disclosure to an outside expert. Send it to a vendor instead and GLBA governs the account number in it. CPRA and PIPEDA come in on the recipients they cover. Your firm's own policy runs in the same pass, beside the rules that ship.
Where the rules come from
Nobody redacts the same file five times by hand.
DataGuard applies the rule for each destination, records which one it applied, and shows what that recipient actually received. Rules are configuration, not code: the regimes that ship are ours to keep current, with the authority cited beside each one, and every version is kept so you can see which one cleared a send. Anything it holds back waits for a partner to clear it.
912 pages. Two things that mattered.
Intake form lists SSN SSN · GLBASSN removed under GLBA and DOB 04/1979.
Adjuster confirmed the reserve was set the same week.
Work product · ABA 1.6Work product removed under ABA 1.6
+38 more removed
2 a person would have to find. Marked where they sit in the file.
The 912-page pass. Every version, every attachment, every export, including the scans.
The rule for each field. An account number is GLBA. A health identifier is HIPAA. A Québec file is Law 25.
The removal itself. The text leaves the file. Not a black box that a copy and paste brings back.
A person still approves every send. They just don't do the 912-page read.
Everything leaves by one gate.
We connect to what your firm already runs. Nothing moves, nothing migrates.
- Microsoft 365
- Clio
- SharePoint
- iManage
- OneDrive
- Filevine
- Outlook
- NetDocuments
- Google Drive
- MyCase
- Gmail
- Egnyte
- Teams
- PracticePanther
- Box
- Rocket Matter
- Dropbox
- CosmoLex
- Local upload
- Network share
- Relativity
- Worldox
- Smokeball
- Litify
- Actionstep
- CASEpeer
- Neos
- Tabs3
- Centerbase
Pre-flight
11 checks · 2 need a person
One gate, whatever it started in.
Your firm writes its rules once, here, instead of setting them up again inside every platform.
- Passed:CPRAClear
- Needs a person:HIPAASSN found, page 12
- Could not run:Tracked changesCan't open attachment
Governed share
Secure linkWhat goes out
3 removed. The recipient sees a summary of what was taken out and why.
Who has it
- R. Vance, opposing counselOpened 4:31pm
- T. Alvarez, paralegalNot opened
Zero-copy by design.
Your files stay where they already live. DataGuard sits between your people and your data, stores nothing of its own, and never becomes a second place your documents live. Nothing goes to outside services. No OpenAI, no Anthropic.
Courts forgive an honest mistake only if you can show you took reasonable steps. The record is your defensibility.
FAQ
Purview blocks the email and tells you afterwards what was wrong. DataGuard removes the parts that shouldn't go out and lets the send complete. Your team isn't held up. The recipient sees only what was meant to go.
See exactly how it works for you.
The full product, the law-firm story, or a head-to-head with what you have now.
See pricing
Three tiers, what each one covers, and what a document counts as.
Built for law firms
Privilege and confidentiality protected on every external share.
DataGuard vs Purview
Why removing the parts beats blocking the whole thing.
How it works underneath
Architecture, deployment, and where your data actually sits.
Try it. Or let us show you.
Run DataGuard on a real document and watch a redaction and its record appear. Or book time with our team to see it on your own files.
No setup. See a redaction and its record in under a minute.
Pricing and deployment detail live on the pricing page.