With global connectivity nearly doubling since 2014 to more than 4 billion people, USAID is increasingly leveraging the power of technology to accelerate development outcomes. As reliance on digital technology expands within an ecosystem, so do the number of vulnerabilities. The new Cybersecurity Primer introduces the concept of cybersecurity as a development challenge, presents opportunities to integrate cybersecurity throughout programming, and highlights cyber threat trends by sector. Partners, donors, governments, and development practitioners can use this Primer to gain a basic understanding of cyber threats, cybersecurity, and cyber resilience and understand how USAID will incorporate cybersecurity throughout its programming.