Secure document workflow automation: what finance teams should check, and where to find the proof

Secure document workflow automation is software that reads your finance files and sends the data to your other systems. Each step runs under controls you can check. Start with an independent audit, such as a SOC 2 Type 2 report. Next come encryption, single sign-on, user roles and an audit log. Then get in writing whether your documents train AI models, where your data is stored and when it's deleted. Check each one before an invoice, bank statement or tax return goes in.

Why AI changes the security review#

A scanner and a shared folder kept one copy of each document. Document AI makes several. Take one bank statement. The original file sits in the vendor's storage, and the data extracted from it sits in a database. A reviewer opens the statement on a review screen. The approved data goes to your loan system through an API or a webhook. If the tool sends the text to an outside AI model, that model's provider gets a copy too.

Each of those copies needs protection, a short list of people who can see it, and a date when it's deleted. That makes the review of a document AI tool longer than the review of a file store. The same checks apply whatever a vendor calls its product, such as document AI, secure document processing or secure data extraction.

Two questions are new with AI. Does the vendor use your documents to train its models, including shared models that serve all of its customers? And which outside AI providers receive your data? Get both answers in writing. Then ask for the vendor's list of subprocessors. A subprocessor is any company the vendor uses to handle your data, such as its cloud host or an AI model provider.

Breaches often involve a vendor. In Verizon's 2026 Data Breach Investigations Report, 48% of breaches involved a third party. A document vendor holds the account numbers, Social Security numbers and income figures from every file you send it. Treat it like any other vendor that holds customer data.

The controls to require, and where to check each one#

Most vendors' security pages show the same logos, such as SOC 2 and ISO 27001. What differs is the proof each vendor can send you. This table lists the controls a finance team should require, and where to check each one before you sign.

Read the SOC 2 report itself, not only the summary. A Type 1 report checks how controls are designed on one date. A Type 2 report tests whether they worked over a period, typically 3 to 12 months, says Schellman, a firm that runs these audits. Check that the scope names the product you'll buy. Then read any exceptions, the places where the auditor found a control that didn't work. Our guide to SOC 2 compliance shows how to read a report, and audit trails covers what the log should record.

Some finance teams need one more report. If the tool's output feeds your financial statements, your auditors may ask for a SOC 1 report. The AICPA says SOC 1 covers a vendor's controls that are likely to matter to its customers' internal control over financial reporting. Those are the checks that keep your financial statements reliable. Ask your auditors early which reports they need.

The rules behind a finance team's vendor review#

Several rules, plus guidance for banks, set out what your vendor review should cover. Each one asks your company to choose vendors with care and to put the terms in writing. Which rules apply depends on the kind of company you are and what's in the files.

• FTC Safeguards Rule

  It covers non-bank financial companies such as mortgage lenders, finance companies, mortgage brokers and tax preparers. It requires you to encrypt customer data, use multi-factor authentication (MFA) and log what users do. You must also choose service providers that can protect customer data, require safeguards by contract and reassess them over time.

• Interagency guidance for banks

  The Federal Reserve, the FDIC and the OCC issued joint guidance on third-party risk in June 2023. It covers due diligence, contracts, ongoing monitoring and termination. It suggests reviewing a vendor's SOC reports and checking that their scope fits the work. It isn't a law, but the agencies review how banks manage their vendors as part of regular supervision.

• NYDFS Part 500

  New York's cybersecurity rule, 23 NYCRR 500.11, requires written policies for third-party service providers. The policies must cover how the provider controls access, including MFA, and how it encrypts data. They must also cover how the provider tells you about a cybersecurity event.

• HIPAA

  If your company is covered by HIPAA and the files hold health information, you need a written business associate agreement (BAA) with the vendor. HIPAA compliance explains who is covered.

• GDPR

  If GDPR applies to your company, Article 28 requires a contract with each vendor that processes personal data for you. That contract is usually a data processing agreement (DPA). The vendor may add subprocessors only with your written authorization.

The bank guidance also lists contract terms worth copying. Examples are the audit reports you're entitled to receive and how fast the vendor tells you about a breach. Another is the return or destruction of your data when the contract ends. The vendor's notice matters because you may have your own deadline to report. Under the Safeguards Rule, some breaches must be reported to the FTC as soon as possible, and no later than 30 days after discovery. That applies when unencrypted data on at least 500 consumers is acquired without their permission.

A secure setup, followed through one loan file#

Picture a non-bank consumer lender whose credit team uses document AI for pay stubs, bank statements and tax returns. A secure setup starts before the first file goes in.

Everyone signs in through the company's single sign-on. Multi-factor authentication is enforced for every user, not left as an option. Each person's role matches their job. Credit analysts can open pay stubs, bank statements and tax returns, and the AP team on the same account sees only invoices. A new hire gets the narrowest role that lets them do the job. That matches the Safeguards Rule, which limits each user to the customer information their job needs.

Files arrive through one channel the team controls, such as the tool's own email inbox or the API. Attachments forwarded between personal mailboxes leave extra copies that nobody tracks. Once a file is in, the AI reads it. When the AI is unsure of a field, a reviewer sees that field with the source line highlighted on the page. The reviewer fixes the value or approves it. Our guide to human-in-the-loop review explains how that step works.

Approved data goes to the loan system through the API or a webhook, so nobody emails spreadsheets of customer data around. Where a copy leaves the credit team, Social Security and account numbers can be redacted first. The audit log records each upload, review and approval. When an examiner asks who opened or changed a file, the team can show them.

The last step is deletion. Decide how long the files and extracted data stay in the tool, and delete them on that schedule. For a lender like this one, the Safeguards Rule sets a time limit. The lender must dispose of a borrower's information no later than two years after it last used that information to serve the borrower. Data can be kept longer when the business needs it or a law requires it. Your own schedule may be shorter.

Questions to send a vendor before the demo#

Send these before the first call, and ask for written answers. Written answers are easier to compare, and you can file them with your vendor records.

• Send us your latest SOC 2 Type 2 reportCheck the period, the scope and any exceptions. A report on a different product doesn't help.
• Send us your ISO/IEC 27001 certificateCheck who issued it, the dates and what it covers.
• Do our documents train any models?Get the answer in the contract. Ask about shared models and third-party models separately.
• Which AI providers receive our data, and where are they?They should be on the subprocessor list, with their locations.
• Where are files, extracted data and backups stored?Ask whether you can choose the region.
• Who reviews our documents?It could be your own staff, the vendor's staff or a contractor. Ask where reviewers work and what they can see.
• Can our admin enforce single sign-on and MFA for everyone?Ask who can change those settings.
• What does the audit log record?Ask whether you can filter it by user and date, and which plan includes it.
• How do we delete a file, and what happens when the contract ends?Deletion should cover the extracted data, not only the original file.
• How fast will you tell us about an incident?Put the time and the method in the contract.
• Will you sign a DPA, and a BAA if we need one?Ask before the pilot, while you can still choose another vendor.

Our take. Keep the review of your documents with your own team. When a vendor's staff check your files, you have to review those people too. Ask who they are, where they work and what they can see. When your own staff do the review, your sign-in rules, roles and audit log cover every reviewer who opens a file. That's easier to explain to an auditor or an examiner.

Where Docsumo fits, and where it doesn't#

Docsumo is an intelligent document processing platform for finance, lending and AP teams. It reads documents that arrive by email, upload or API. Large language models turn the text into fields, and checked data goes to your systems through the API and webhooks.

Access to Docsumo is role-based, with single sign-on and multi-factor authentication. The Business plan includes audit logging and a test environment, and the audit log records each approval decision. Docsumo can also find sensitive data, such as Social Security and account numbers, and redact it. The security page lists the controls in detail and explains how to request the SOC 2 report. The subprocessor list names the outside companies that handle data. For larger teams, see Docsumo for enterprise or the pages for lending and accounts payable. If you're still comparing tools, our list of document workflow software compares the main options.

Ask for the evidence before the pilot starts#

A security review takes longer than a demo, so start it first. Send the questions above with your first email to a vendor. Until the review is done, run the pilot on test documents or files with the personal data removed. Keep the vendor's answers with your vendor records, because auditors and examiners may ask for them later.

Book a demo and bring your security questionnaire, or start a free trial with test documents.

Frequently asked questions#