TPRC 2024: The 52nd Research Conference on Communications, Information and Inter

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The focus of this paper is on an economics-based analysis and redesign of mitigation of volumetric Denial-of-Service (DDos) attacks utilizing the initial packets in connection-oriented protocols. These attacks have been documented for decades and their volume and impact have been growing enormously. The contributions of the paper are: (1) a novel evaluation framework based on all of efficacy, threat, overhead, and damage as experienced by applications; (2) a comparison of TCP with SYN Cookies and QUIC with Retries, the two accepted DDoS mitigation approaches in these two transport protocols; (3) evaluation of our alternative proposal to use SYN Proof-of-Work (SYN PoW) to address these volumetric attacks more effectively; and (4) an in-depth discussion of the economics of the various stakeholders in these scenarios. As demonstrated in this work, the SYN PoW type of approach not only moves much of the cost of mitigation onto the attackers, unlike current proposals, but also enables verification of validity of traffic to be handled anywhere in the network, rather than only at the end-points, giving network service providers an additional capability for reducing malicious traffic. A critical contribution is that this type of approach

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Scholarly inquiry has yet to comprehensively explore the impact of Internet connectivity levels on dynamics related to online echo chambers, trust in online social networks (OSNs), and concern by users for algorithmic manipulation. To investigate the relationship between OSN users’ attitudes regarding online echo chambers, trust in OSN platforms, and concerns about algorithmic manipulation and Internet connectivity, we conducted a survey of more than 700 OSN users across diverse contexts. We collected responses from the United States, United Kingdom, India, and South Africa about attitudes and beliefs toward encountering discordant information in online settings. We integrate our survey response data with existing datasets from the Global System for Mobile Communications Association (GSMA) which indexes infrastructure, affordability, consumer readiness, and content & services to analyze mobile connectivity in a country. Our study reveals marked differences in users’ reported concerns for prevalence of OSN echo chambers, trust in OSNs as a source for news information, and concern for algorithmic manipulation depending on the level of Internet connectivity in various geographic regions. Our findings will aid global policymakers in tailoring policies addressing the aforementioned and related Internet phenomena to suit the specific context of Internet accessibility within the targeted country.

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The Internet has become a critical basic infrastructure for society and the economy. As such, the resilience of the Internet is essential for the functioning and resilience of many sectors of our digital economies. In our increasingly digital society and economy, Internet is a key element of cyber-resilience. Understanding how to assess and promote Internet resilience are important policy challenges. In this paper, we discuss key aspects of the Internet design that differentiate it from other critical infrastructure and that are essential in considering its resiliency. We also explore how to achieve resiliency and provide a series of illustrative examples that reveal the challenges of achieving and measuring Internet resiliency, as well as mechanisms that contribute to it. Finally, we offer our thoughts on the policy challenges and approaches for promoting Internet resiliency.