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A Firm Is Leaving and Wants Proof We Have Deleted Their Data. Can We Give It?

Law firms leaving a legal tech product want their data returned and proof of deletion. We build per-firm export, full deletion and a deletion record.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Deleting a firm's data is hard because it lives in your database, file storage, search indexes, AI logs, analytics, backups and third-party tools, and nobody has a map. We build a per-firm data inventory, a complete export in a usable format, deletion across every store with verification, handling of backups according to your written policy, and a deletion record you can give the firm.

An email from the firm's risk team

A firm has decided not to renew. Their risk team writes: under the contract, please return all firm data in a usable format and then delete it, and confirm in writing when deletion is complete, including from backups and sub-processors. Your founder forwards the email to engineering, who realise they have never done this before.

The firm's documents are in file storage. Matter data is in the database. Extracted text sits in a search index. AI prompts and outputs are in logs. Usage data is in an analytics tool. Support tickets with screenshots are in the help desk. Backups contain everything. Nobody is sure what else.

Why a firm's data is harder to remove than to add

Products are built to store data, not to remove it cleanly. Over time, a firm's data spreads to places nobody planned.

  • Data is copied into search indexes, caches and AI retrieval stores for performance.
  • Logs and error trackers capture fragments of documents and prompts.
  • Analytics and support tools hold user details and sometimes content.
  • Backups keep data for a period after it is deleted from the live system.
  • Shared tables mix firms' data, so deletion needs care to avoid touching other firms.

What an uncertain deletion costs

A firm leaving is already a loss. A firm leaving unhappy with how its data was handled is worse, because law firm risk teams talk to each other and to their clients. If you cannot confirm deletion properly, the firm may escalate, and your answer affects every other firm's view of you. Future security reviews will ask how you delete data at contract end, and a vague answer counts against you. And any data you keep by accident remains a risk you carry.

How we build clean exit for law firms

What we build makes a firm's data findable, exportable and removable, with a record of each step.

  1. A data inventory mapping every store that holds firm data: database tables, file storage, search indexes, AI stores and logs, analytics, help desk and sub-processors, with how data is identified by firm in each.
  2. A per-firm export in usable formats: documents in their original form with folder structure, matter data as structured files, and AI outputs with their records, with a manifest listing everything included.
  3. Deletion jobs per store, run in order, each verified by checking that no firm data remains.
  4. Handling of logs and third-party tools, with deletion requests sent to sub-processors where they support it.
  5. Backups handled according to your written policy, for example allowed to expire on their normal schedule and never restored for that firm, stated clearly in the deletion record.
  6. A deletion record for the firm: what was exported, what was deleted from where and when, how deletion was verified, and how backups are handled.
Where firm data sitsHow it is handled
DatabaseFirm-scoped deletion, verified by query
File storageAll objects under the firm removed, verified
Search index and AI storesFirm entries removed, index checked
Logs and analyticsDeleted or allowed to expire per your policy
BackupsHandled per written policy, stated in the record

What your contracts require, and what must be kept for your own legal reasons, is for you and your advisers to decide. The system makes whatever you decide possible to carry out and to evidence.

The next firm that leaves

The next departing firm's risk team sends the same request. Your team starts the export, which produces the firm's documents, matter data and AI records with a manifest. The firm confirms receipt. The deletion jobs run across every store in the inventory, each verified. Deletion requests go to the sub-processors that hold firm data. The firm receives a deletion record explaining exactly what was removed and how backups are handled. They file it, and the relationship ends on good terms.

Could you delete a firm's data today?

  • You have no map of every place a firm's data is stored.
  • You have never done a full export for a firm.
  • Search indexes, logs and analytics are not included in deletion.
  • Your approach to backups at contract end is not written down.
  • You could not give a firm a written record of deletion.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Can we delete data from backups immediately?

Often not practically. Many teams let backups expire on schedule and never restore the firm's data. What you do should be written down and stated to the firm.

What format should the export be in?

Documents in their original formats and structured data in common formats, with a manifest. We agree the details with you and, where possible, the firm.

Is this only for firms leaving?

No. The same tools handle deletion of a single matter or document when a firm asks, and help with security reviews.

What do you need from us?

Access to your infrastructure, your list of sub-processors and tools, and your contract terms on return and deletion.

Keep reading

More on Problems We Solve

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