Career profile
Justin Greer
Chief Information Security Officer, Purdue University
- Current role, per sources checked 30 June 2025
- January 2024
Justin Greer is the Chief Information Security Officer of Purdue University, appointed to the role in January 2024 after serving as interim CISO.
Career path
Greer is a Purdue graduate who has spent more than 15 years with Purdue Information Technology across multiple roles, including software developer, system engineer and security architect.
Earlier in his career he worked within Purdue's IT Security and Policy group, where he contributed to the development of the Research Environment for Encumbered Data (REED), a system built to help Purdue researchers meet NIST SP 800-171 controls required under federal contracts.
By February 2023 he held the title of director of enterprise security for Purdue IT, a position he had held from 2020.
He stepped into the interim CISO role in August 2023 and was confirmed in the position full time in January 2024, after what the university described as a national search.
Purdue CIO Ian Hyatt said of the appointment that Greer "seamlessly stepped into the Interim CISO role and embraced the opportunity to lead Purdue's security efforts with a bias for action."
Remit and current work
As CISO, Greer is listed on Purdue IT's reference architecture team with responsibility for helping to identify and manage risk, protect the Purdue community and its assets, and design the future state of cybersecurity at the university.
In 2025, Purdue IT colleagues credited Greer, alongside Andy Sydelko and Mark Schneider, with leading a network address remediation effort that required securing additional resources after an initial six-month timeline proved insufficient for the scope of hosts needing attention.
While serving as director of enterprise security, Greer also spoke publicly about Purdue's rollout of a LastPass password management service for the university community, describing password managers as having become a standard security practice given the complexity requirements across different systems.
