Define and deliver Pinterest's company-wide adversarial strategy spanning pre-authentication, login/signup, and post-authentication surfaces — setting multi-year vision, aligning executive stakeholders, and driving coordinated investment across Policy, Ops, MLE, Integrity Analytics, Data Science, Security, and Identity. Partner with the Enforcement Systems team to develop the associated suite of spam account and domain enforcement actions such as warnings, rate limits, feature restrictions, deactivations, and domain-level actions.