Permission-aware legal knowledge

Every answer, attested.

Attesta turns your firm's matters and precedents into instant, natural-language answers — each one grounded in a source the asking lawyer is allowed to see, cited so they can verify it, and logged so you can prove who saw what. When there is no permitted source, it says so rather than guess.

In your Azure tenant.  Ethical-wall aware  ·  Fully auditable  ·  Nothing leaves your subscription

Signed in as Asha Mehta — Project Ganga team Live answer
“What indemnity cap did we agree on the last comparable Series B?”
The cap was set at 100% of the investment amount, with a 24-month survival period for business warranties, in line with the firm's standard position for Indian growth financings.[S1] The market norm for aggregate indemnity caps in Series A/B rounds ranges between 50% and 100% of the investment.[S2]
S1 · SSAProject Ganga — Share Subscription Agreement, cl. 9.3
S2 · MemoFirm Precedent — Indemnity Caps Memorandum
Project Indus documents were withheld — Asha is walled off from that matter.
The problem

General AI can't be trusted with privileged matters.

A firm's knowledge is its most valuable — and most confidential — asset. Consumer AI tools put it at risk in three ways that make them unusable for real work.

Over-shares

No sense of who may see what

A single index has no concept of ethical walls or matter teams. Ask it anything and it can surface a client's confidential documents to someone who should never see them.

Invents

Confident, unverifiable answers

Language models hallucinate fluent, wrong answers with no source. In legal work, an answer you can't trace is worse than no answer at all.

Leaks

Data leaves your control

Sending matter text to a third-party API takes privileged material outside the firm — a non-starter under client confidentiality duties and the DPDP Act.

The platform

Confidentiality and grounding, enforced as architecture.

Not promised in a prompt — checked at query time, on every request, for every user.

Permission-aware retrieval

Security trimming and ethical walls are applied inside the index. A lawyer can never retrieve a matter they're walled off from — deny always wins, even for administrators.

Grounded & cited, or silent

Every statement carries a citation to a retrieved passage. Uncited or fabricated output is rejected by guardrails; off-corpus questions are refused, not guessed.

Tamper-evident audit

A hash-chained log records every query, every answer and the exact documents surfaced — a defensible who-saw-what record for confidentiality obligations and regulators.

In your tenant

Runs on Azure OpenAI + AI Search inside your own subscription, India-region for DPDP residency. Firm data and model traffic never leave your control.

Model- & infra-agnostic

Pluggable embeddings, LLM and search backends. Evaluate fully offline on a laptop, then switch to GPT-4o or Claude in production with a single config change.

Sign in with Entra ID

Authenticates against Microsoft Entra ID; matter-team and ethical-wall membership come straight from your directory. No new access model to maintain.

How it works

From question to attested answer.

01

Authenticate

The request carries the lawyer's verified Entra ID identity — their groups, matter teams and walls.

02

Trim & retrieve

Hybrid search returns only passages the identity is permitted to read; everything else is invisible.

03

Ground & check

The model answers using only those passages; guardrails reject anything uncited or unsupported.

04

Cite & log

The answer arrives with sources to verify, and the whole exchange is written to the audit chain.

Security & confidentiality

Built for a risk committee, not a demo.

  • Ethical walls are absolute. Modelled as deny rules that override every allow, enforced in the index itself.
  • Fail-closed identity. Unknown or unauthenticated callers see only firm-public material — never more.
  • Data residency. Deployed in your Azure subscription, India region, for the DPDP Act, 2023.
  • Verifiable, not trusted. The audit chain is tamper-evident and anchorable to immutable storage.
At query time, every time

What Attesta guarantees

Documents outside your permissions0
Answers without a cited source0
Firm data leaving your tenantNone
Queries & accesses recorded100%
Get started

Put your firm's knowledge to work — safely.

Begin with a six-week in-tenant pilot on two closed matters. See ethical walls, grounded citations and the audit trail on your own documents.

Book a demo