The Fourth Workshop on Trustworthy Scientific Cyberinfrastructure (TrustedCI@PEARC20) provides an opportunity for sharing experiences, recommendations, and solutions for addressing cybersecurity challenges in research computing. The workshop provides a forum for information sharing and discussion among a broad range of attendees, including cyberinfrastructure operators, developers, and users. Please visit
https://www.trustedci.org/pearc20-workshop for workshop agenda and materials.