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Johnny Nhan - Texas Christian University. Fort Worth, TX, US

Johnny Nhan

Associate Dean of Graduate Studies and Professor | Texas Christian University


Nhan's research focuses primarily on technology and policing - cyber security, police culture and collaborative security networks.



Johnny Nhan Publication Johnny Nhan Publication



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Johnny Nhan - 2020 Ferrari Award Can Higher Ed Shape the Police Force of the Future? TCU Presents: The Vietnam War – Through Vietnamese Eyes




Johnny Nhan is Associate Dean of Graduate Studies and Professor in the Department of Criminal Justice at Texas Christian University.

Nhan's research has focused primarily on technology and policing, ranging from issues of cyber security to police culture and collaborative security networks. His first book, published in 2010, Policing Cyberspace: A Structural and Cultural Analysis, examined cyber policing task forces in California. His latest book, published in 2019, Issues and Controversies in Policing Today, looks at 21st century policing issues ranging from academy and field training to surveillance and LGBTQ officers.

Nhan has worked collaboratively and published research projects in the past several years, focusing primarily on cyber and high-tech crimes, applying theoretical models towards empirical data collected from sources ranging from policing organizations and security corporations to Internet vigilante groups. In 2015, Nhan with Laura Huey, Ph.D. at the University of Western Ontario and Ryan Broll, Ph.D. from the University of Geulph, were among the first researchers to publish on crowdsourcing criminology in their article, “Digilantism: An Analysis of Crowdsourcing and the Boston Marathon Bombings,” which examined the actions by online Internet communities and members of the general public during a critical incident. Another article published with Huey, “‘Uppity civilians’ and ‘cyber vigilantes’: The role of the general public in policing cyber crime,” analyzed Internet message board data to examine citizen efforts against sexual predators.

Future research will further examine the intersectionality of police and technology, including the impact of social media on policing. Nhan also is currently working with police and private security agencies in the Dallas-Fort Worth area to develop applicable leadership and policies for the future of policing.

Areas of Expertise (6)

Police Culture


Race and Crime


White Collar Crime

Police Training

Education (3)

University of California, Irvine: Ph.D., Criminology, Law & Society 2008

University of California, Irvine: BA, Criminology, Law & Society 1999

University of California, Irvine: BA, Economics 1999

Media Appearances (5)

Teachers packing heat: It's one thing to carry a gun. It's another to pull the trigger

Fort Worth Star Telegram  online


Antonio Orozco, an ordained minister of 30 years, is at peace preparing Texas teachers to carry out violence to stop violence. "I have no qualms about using firearms to defend a life of a child or another person," the 67-year-old grandfather from Houston said. "It goes contradictory to what I'm doing, but the facts on the ground dictate to take action."

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Cop charged in fatal shooting of man who tried to light himself on fire

New York Post  online


An Oklahoma City police officer was charged Tuesday with second-degree murder in the fatal shooting of a suicidal man who had doused himself in lighter fluid and was trying to set himself on fire.

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Online Sleuths Are Outing Racists, But Should They?

Fast Company  online


Shortly after last Saturday’s white nationalist march through Charlottesville, outraged internet users took to social media to call out some of the participants in the march. Daily News writer Shaun King tweeted photos of suspects in some violent attacks, including names and addresses shared by sources.

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Criminal justice graduates first students from master’s program

tcu360  online


An inaugural class of 14 students received a Master of Science in Criminal Justice and Criminology from TCU’s online criminal justice master’s program. Johnny Nhan, director of the online master’s program, said members of the program typically already have real-world experience.

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With identity crisis in police, more Fergusons inevitable

The Conversation  online


Recent social unrest across the country protesting the police shooting death of Michael Brown in Ferguson and the police chokehold death of Eric Garner in New York has reopened wounds and revealed deeply rooted tensions between citizens and police, especially in ethnic minority communities.

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Articles (5)

A Qualitative Study: An Examination of Police Officers’ Lived Experiences During the COVID-19 Pandemic

International Criminal Justice Review

2021 In the spring of 2020, the COVID-19 pandemic spread across the globe prompting stay-at-home orders for all but the most essential workers in society. Policing was one of the professions that is essential for community safety, regardless of the circumstances. Officers were on the front-line of the COVID-19 public health crisis and their preparedness was crucial for officer and community health. During the onset of the pandemic little was known about how officers perceived the virus and how police agencies prepared officers to work in a highly contagious environment.

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Stakeholder collaboration of a Texas Children’s Advocacy Center: An exploratory analysis of relations between law enforcement, Child Protective Services, and the children’s advocacy center

Children and Youth Services Review

2021 The child advocacy center (CAC) model utilizes a multidisciplinary approach to handle crimes against children cases, with child protective services (CPS) and law enforcement agencies working closely with CACs. Though the CAC model surfaced in the 1980s, the main stakeholders’ collaborations are not well studied.

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Digilantism: An Analysis of Crowdsourcing and the Boston Marathon Bombings

The British Journal of Criminology

Johnny Nhan, Laura Huey, Ryan Broll

2017 This paper explores the aftermath of the Boston Marathon bombing incident and how members of the general public, through the online community Reddit, attempted to provide assistance to law enforcement through conducting their own parallel investigations. As we document through an analysis of user posts, Reddit members shared information about the investigation, searched for information that would identify the perpetrators and, in some cases, drew on their own expert knowledge to uncover clues concerning key aspects of the attack. Although it is the case that the Reddit cyber-sleuths’ did not ultimately solve this case, or provide significant assistance to the police investigation, their actions suggest the potential role the public could play within security networks.

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The reentry labyrinth: The anatomy of a reentry services network

Journal of Offender Rehabilitation

Johnny Nhan, Kendra Bowen & Katherine Polzer

2016 Difficulties of returning prisoners to society have been well documented in research the last few decades. This article looks at reentry programs and finds very few standardized programs and brought up many practical issues exoffenders face upon reentry. We examine a nonprofit regional reentry program in North Texas in order to better understand the number and nature of services available and the difficulties the organizations face and its potential impact on former inmates. We use Texas ReEntry Services (TXRS) data located in Fort Worth, Texas, as a starting point for mapping the reentry landscape, including client information in order to identify variables that affect obtaining resources, such as transportation. Finally, we discuss the potential impact of this networked arrangement on policy and recidivism.

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‘Uppity civilians’ and ‘cyber-vigilantes’: The role of the general public in policing cyber-crime

Criminology & Criminal Justice

Laura Huey, Johnny Nhan, Ryan Broll

2012 The distributed nature of the Internet requires that security issues be addressed through collaborative efforts within and across various sets of public and private actors. Drawing on nodal governance theory, this article explores one aspect of the role that the general public can and does play in the field of cyber-security: civilian policing of the Internet. In particular, we examine the motives and actions of regular citizens, who use their computer skills to identify, track and collect information on the activities of suspected criminal offenders. Whereas some groups use such information to engage in vigilante acts, the groups that we study work cooperatively with police, collecting information to pass onto criminal justice agencies. We suggest that these collectives and their members are a potentially useful, if under-valued, component of cyber-security networks.

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