Providing verification is disclosed, including: receiving a verification request associated with a user; retrieving account information associated with the user, wherein the account information includes a plurality of user attribute values previously submitted by the user; selecting at least one user attribute value from the plurality of user attribute values included in the account information; dynamically generating a verification question and a plurality of answer choices based on the at least one selected user attribute value, wherein the plurality of answer choices includes the at least one selected user attribute value; presenting the verification question and the plurality of answer choices for the user; receiving one or more selections associated with the plurality of answer choices; and determining whether the verification is successful based at least in part on the one or more selections.