Sanchari Das

schoolIndiana Universitybar_chart#850 Global Rank

Total Papers

HCI Rank

#850

Research Areas

Years Active

Recent Publications

Expert-led Debunking of Health Misinformation on TikTok

In this work, we empirically evaluated expert-led debunking of health misinformation on TikTok with n=420 survey and n=20 interview participants. Unlike fact-checkers, health professionals debunk misinformation non-anonymously through video-against-video formats (stitching/''duetting''), rather than using labels. We a…

CHI '26CorrespondingMental Health Apps & Online Support Communities +3

Co-designing MESA-Bot: Enhancing Accessibility, Privacy, Security, and Trust in a Mental Health Chatbot for Older Adults

Older adults are increasingly turning to chatbot-based mental health support, yet adoption remains limited by barriers in accessibility, privacy, security, and trust. We present a two-phase study on the co-design of MESA-Bot (Mental and Emotional Support Assistant for Older Adults), a non-diagnostic chatbot tailored t…

CSCW '25CorrespondingCombating Misinformation in Elections and Around the World

Misinformation's Influence on Voting Intentions: Older Adults' Experiences with Manipulative Narratives on Social Media

Older adults habitually encounter misinformation, yet little is known about their experiences with it. In this study, we employed a mixed-methods approach, combining a survey (n=119) with semi-structured interviews (n=21), to investigate how older adults in America conceptualize, discern, and contextualize social medi…

CHI '25CorrespondingAging-Friendly Technology Design +2

“Watch My Health, Not My Data”: Understanding Perceptions, Barriers, Emotional Impact, & Coping Strategies Pertaining to IoT Privacy and Security in Health Monitoring for Older Adults

The proliferation of “Internet of Things (IoT)” provides older adults with critical support for “health monitoring” and independent living, yet significant concerns about security and privacy persist. In this paper, we report on these issues through a two-phase user study, including a survey (N = 22) and semi-structur…

CHI '255th+ AuthorAccessible Gaming +2

Systemization of Knowledge (SoK): Goals, Coverage, and Evaluation in Cybersecurity and Privacy Games

This paper systematized existing knowledge on cybersecurity and privacy game-based approaches, exploring their goals, scope, and evaluation methods. Our review of 93 academic papers revealed that these approaches serve multiple purposes and target diverse player types. We identified 11 key aspects of cybersecurity and…

CHI '24CorrespondingTelemedicine & Remote Patient Monitoring +2

"We Have No Security Concerns": Understanding the Privacy-Security Nexus in Telehealth for Audiologists and Speech-Language Pathologists

The advent of telehealth revolutionizes healthcare by enabling remote consultations, yet poses complex security and privacy challenges. These are often acutely felt by lower-resourced, allied-healthcare practices. To address this, our study focuses on audiologists and speech-language pathologists (SLPs) in private pra…

CSCW '23CorrespondingSecurity and Privacy

Cybersecurity, Safety, & Privacy Concerns of Student Support Structure for Information and Communication Technologies in Online Education

COVID-19 has created a dramatic paradigm shift in education methods, which forced schools and universities to abandon the usual in-person education in favor of online education modules. Such a shift has extended the time and use of internet communication technologies (ICTs) by most, making online education platforms p…

CSCW '234th AuthorSecurity and Trust

What Mid-Career Professionals Think, Know, and Feel About Phishing: Opportunities for University IT Departments to Better Empower Employees in Their Anti-Phishing Decisions

Phishing attacks, in which deceptive messages purporting to be from a legitimate contact are used to trick recipients and acquire sensitive information for the purposes of committing fraud, are a substantial and growing problem for organizations. IT departments and professionals may put in place a variety of instituti…

CHI '234th AuthorPrivacy Perception & Decision-Making +1

Tips, Tricks, and Training: Supporting Anti-Phishing Awareness among Mid-Career Office Workers Based on Employees' Current Practices

Preventing workplace phishing depends on the actions of every employee, regardless of cybersecurity expertise. Based on 24 semi-structured interviews with mid-career office workers (70.8% women, averaging 44 years old) at two U.S. universities, we found that less than 21% of our participants had any formal anti-phishi…

CHI '192nd AuthorPrivacy by Design & User Control +2

Techies Against Facebook: Understanding Negative Sentiment Toward Facebook via User Generated Content

Researchers have recognized the need to pay attention to negative aspects and non-use of social media services to uncover usage barriers and surface shortcomings of these systems. We contribute to these efforts by analyzing comments on posts related to Facebook on two blogs with a technically savvy readership: Slashdo…

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