Luis Vargas

Co-authored papers

2018

• Characterizing the Security of the SMS Ecosystem with Public Gateways

  ACM Transactions on Privacy and Security

  Bradley Reaves, Luis Vargas, Nolen Scaife, Dave Tian, Logan Blue, Patrick Traynor, and Kevin R. B. Butler

  DOI PDF

  A 28-month study of 900,000 public SMS gateway messages shows persistent insecure practices and widespread phone-verified account fraud evasion.

2017

• AuthentiCall: Efficient identity and content authentication for phone calls

  Proceedings of the USENIX Security Symposium

  Bradley Reaves, Logan Blue, Hadi Abdullah, Luis Vargas, Patrick Traynor, and Tom Shrimpton

  PDF

  Provides cryptographic caller-ID verification and conversation integrity for phone calls with minimal overhead.