The Cybersecurity and Infrastructure Security Agency (CISA) increased the number of Automated Indicator Sharing (AIS) participants as well as the volume of cyber threat indicators it has shared since the program’s inception in 2016. However, CISA made limited progress in improving the overall quality of information it shares with AIS participants to effectively reduce cyber threats and protect against attacks. The lack of progress can be attributed to the limited number of AIS participants sharing cyber indicators with CISA, delays in receiving cyber threat intelligence standards, and insufficient staff. To be more effective, CISA should hire the staff it needs to provide outreach, guidance, and training. We made four recommendations to CISA to enhance the program’s overall effectiveness and cyber threat information sharing. CISA concurred with all four recommendations.