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Minnesota CISO Aaron Call Steps Away from State Service

After helping Minnesota create a security operations center that protects a wide variety of state institutions, Aaron Call has departed from his role as CISO. Rohit Tandon has taken over Call's responsibilities in an interim capacity.

by / December 23, 2019
Minnesota State Capitol Shutterstock/Henryk Sadura

Aaron Call has left his post as Minnesota's chief information security officer after a roughly two-year stint in that position.  

Minnesota IT Services (MNIT), the agency that houses the CISO position, confirmed that Call’s final day was Friday, Dec. 20. State CIO Tarek Tomes said in an email to Government Technology that Rohit Tandon, who has been serving as the department’s deputy CISO, is now interim CISO. 

According to his LinkedIn, Call is now serving as the CISO for Wisconsin-based WPS Health Solutions. 

Call played a crucial role in helping MNIT develop a mature state-level security operations center, which provides monitoring and response capabilities that extend beyond the executive branch agencies to help protect counties, cities, schools and libraries across the state.

“I am grateful for Aaron's service to Minnesota,” Tomes said. “He built a strong team at the state, one that is positioned to navigate the challenges brought by global security threats and the opportunities brought by evolving technology.”

In late 2017, Call replaced Chris Buse, the state’s first CISO. Call came to the job with experience in IT, law and criminal justice. Before taking the position, Call had been MNIT’s information security director for more than three years.

Since 2011, MNIT has been undergoing consolidation, a process that Buse helped jumpstart after Minnesota passed the 2011 IT Consolidation Act. By the time Call took over in 2017, MNIT had already completed consolidation of staff and resources and expected to fully consolidate its finances within five years. 

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Jed Pressgrove Staff Writer

Jed Pressgrove has been a writer and editor for about 15 years. He received a bachelor’s degree in journalism and a master’s degree in sociology from Mississippi State University.

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