IGF::OT::IGF FOR OTHER FUNCTIONS - THE IRS, IT CYBERSECURITY IS EVALUATING USING CROWDSOURCED VULNERABILITY DISCOVERY SERVICES FOR WEB APPLICATIONS HOSTED WITHIN THE IRS.GOV DOMAIN TO IDENTIFY REAL THREATS TO THE IRS INFRASTRUCTURE PRIOR TO ATTACKER EXPLOITS. CROWDSOURCING LEVERAGES THE DIVERSE SKILL SETS FROM MANY SUBJECT MATTER EXPERTS TO QUICKLY DISCOVER VULNERABILITIES AND REPORT THEM TO THE IRS, IT ALSO FOLLOWS A MODEL BEING PUBLICALLY ADOPTED BY US INTELLIGENCE AGENCIES INCLUDING THE FBI. THE MODEL IS BLACK-BOX PENETRATION TESTING BY ANNUAL SUBSCRIPTION USING ETHICAL HACKERS OR RESEARCHERS WITH NO KNOWLEDGE OF IRS SYSTEMS.