Commercial Anti-Smishing Tools and Their Comparative Effectiveness Against Modern Threats

• URL: http://arxiv.org/abs/2309.07447v2
• Date: Sun, 28 Apr 2024 19:06:50 GMT
• Title: Commercial Anti-Smishing Tools and Their Comparative Effectiveness Against Modern Threats
• Authors: Daniel Timko, Muhammad Lutfor Rahman,
• Abstract summary: We developed a test bed for measuring the effectiveness of popular anti-smishing tools against fresh smishing attacks. Most anti-phishing apps and bulk messaging services didn't filter smishing messages beyond the carrier blocking. While carriers did not block any benign messages, they were only able to reach a 25-35% blocking rate for smishing messages.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Smishing, also known as SMS phishing, is a type of fraudulent communication in which an attacker disguises SMS communications to deceive a target into providing their sensitive data. Smishing attacks use a variety of tactics; however, they have a similar goal of stealing money or personally identifying information (PII) from a victim. In response to these attacks, a wide variety of anti-smishing tools have been developed to block or filter these communications. Despite this, the number of phishing attacks continue to rise. In this paper, we developed a test bed for measuring the effectiveness of popular anti-smishing tools against fresh smishing attacks. To collect fresh smishing data, we introduce Smishtank.com, a collaborative online resource for reporting and collecting smishing data sets. The SMS messages were validated by a security expert and an in-depth qualitative analysis was performed on the collected messages to provide further insights. To compare tool effectiveness, we experimented with 20 smishing and benign messages across 3 key segments of the SMS messaging delivery ecosystem. Our results revealed significant room for improvement in all 3 areas against our smishing set. Most anti-phishing apps and bulk messaging services didn't filter smishing messages beyond the carrier blocking. The 2 apps that blocked the most smish also blocked 85-100\% of benign messages. Finally, while carriers did not block any benign messages, they were only able to reach a 25-35\% blocking rate for smishing messages. Our work provides insights into the performance of anti-smishing tools and the roles they play in the message blocking process. This paper would enable the research community and industry to be better informed on the current state of anti-smishing technology on the SMS platform.

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