Automating Security Questionnaires: SIG, SIG Lite, CAIQ & DDQ

Know the formats

Most assessments you receive are one of a few standards, or a custom sheet derived from them:

• SIG (Standardized Information Gathering) — Shared Assessments’ full questionnaire; hundreds of questions across risk domains
• SIG Lite — the condensed SIG for lower-risk vendor relationships
• CAIQ — Cloud Security Alliance’s Consensus Assessments Initiative Questionnaire, mapped to the Cloud Controls Matrix
• DDQ — due-diligence questionnaires, common in financial services and M&A
• Custom assessments — buyer-built spreadsheets and portals, usually remixing the standards above

Because the standards overlap heavily, a well-organized evidence base can answer most of any questionnaire — the work is mapping, not writing.

Why answer libraries go stale

The traditional fix is a Q&A library: save every answer, search it next time. It fails predictably. Answers drift out of date as controls change, nobody owns review, near-duplicate questions get near-contradictory answers, and a stale claim on a signed questionnaire is a contractual misrepresentation, not a typo. Recycling old answers automates the mistake.

Answer from evidence, not old answers

The durable approach inverts the model: maintain a small, owned set of approved evidence, and generate answers from it fresh each time.

• Approved sources only — security policies, SOC 2 and ISO 27001 reports, pen-test summaries, architecture docs, prior approved responses
• Owned and dated — each source has an owner and a review date; expired evidence is flagged, not silently reused
• Connected — a knowledge graph links controls, policies, certifications and systems, so one updated policy propagates to every dependent answer
• Generated per question — the system drafts each answer from current evidence, matched to the question’s exact wording and format (yes/no, free text, control reference)

Citations make answers defensible

Every generated answer should carry a citation to its source — the policy section, the SOC 2 control, the report page. Citations turn review from re-research into verification: your security team confirms the source says what the answer claims, in seconds. They also give you an audit trail when a buyer challenges an answer eighteen months into the contract.

The automated workflow

• Ingest the questionnaire in any format — SIG/CAIQ spreadsheets, DDQ docs, portal exports
• Auto-draft every answer from approved evidence, each with its citation
• Flag the exceptions: unanswerable questions, expired evidence, low-confidence matches
• Route flagged items to the right owner — security, legal, engineering
• Human review and sign-off on the full set, then export in the buyer’s required format

Done well, a questionnaire that took two weeks of security-team time takes hours: the software answers the 80% that is settled and cited, and humans spend their attention on the 20% that genuinely needs judgment.