Sathvik Prasad
Co-authored papers
2025
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Characterizing Robocalls with Multiple Vantage Points
Proceedings of the IEEE Symposium on Security and Privacy
Sathvik Prasad, Aleksandr Nahapetyan, and Bradley Reaves
Cross-validates five independent robocall measurement vantage points, finding unsolicited calls slowly declining and robocallers adapting to STIR/SHAKEN authentication.
2024
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Jäger: Automated Telephone Call Traceback
Proceedings of the ACM Conference on Computer and Communications Security
David Adei, Varun Madathil, Sathvik Prasad, Bradley Reaves, and Alessandra Scafuro
A cryptographic protocol automates abusive phone call traceback in seconds while preserving caller privacy and carrier trade secrets.
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On SMS Phishing Tactics and Infrastructure
Proceedings of the IEEE Symposium on Security and Privacy
Aleksandr Nahapetyan, Sathvik Prasad, Kevin Childs, Adam Oest, Yeganeh Ladwig, Alexandros Kapravelos, and Bradley Reaves
67,991 SMS phishing messages were linked to over 600 distinct operations that reuse cloud infrastructure, phishing kits, and provide early warning potential by monitoring certificate transparency logs.
2023
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Diving into Robocall Content with SNORCall
Proceedings of the USENIX Security Symposium
Sathvik Prasad, Trevor Dunlap, Alexander Ross, and Bradley Reaves
Applies weak-supervision labeling to 232,000 robocall transcripts, producing the first large-scale estimates of robocall scam prevalence and campaign infrastructure.
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Diving into Robocall Content with SnorCall
USENIX Login
Sathvik Prasad, and Bradley Reaves
Research overview of “SnorCall” for USENIX Login
2020
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Does ignoring robocalls make them stop? Here's what we learned from getting 1.5 million calls on 66,000 phone lines
The Conversation
Sathvik Prasad, and Bradley Reaves
Research overview of “Who’s Calling” for The Conversation.
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Who's Calling? Characterizing Robocalls through Audio and Metadata Analysis
Proceedings of the USENIX Security Symposium
Sathvik Prasad, Elijah Bouma-Sims, Athishay Kiran Mylappan, and Bradley Reaves
A 66,000 line phone honeypot finds no evidence that answering robocalls increases future call volume, overturning popular wisdom.
2019
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Thou Shalt Discuss Security: Quantifying the Impacts of Instructions to RFC Authors
Proceedings of the Security Standardisation Research Conference
Justin Whitaker, Sathvik Prasad, Bradley Reaves, and William Enck
Mandating security consideration sections in RFCs measurably increased security content volume and breadth across decades of Internet standards.