Standardized Information Gathering questionnaire — a widely used, standardized third-party risk assessment questionnaire published by Shared Assessments.
The SIG (Standardized Information Gathering) questionnaire is published by Shared Assessments and comes in a full version and a shorter 'SIG Lite'. Large enterprises frequently send it to vendors during procurement instead of (or alongside) a bespoke security questionnaire, because it's a known, comparable format their risk teams already know how to evaluate.
Looking for another term or the full list?