Searched for: author:"Asghari, H."
(1 - 8 of 8)
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Asghari, H. (author)
Research in the field of information security economics has clarified how attacker and defender incentives affect cybersecurity. It has also highlighted the role of intermediaries in strengthening cybersecurity. Intermediaries are organizations and firms that provide the Internet’s infrastructure and platforms. This dissertation looks at how...
doctoral thesis 2016
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van Eeten, M.J.G. (author), Lone, Q.B. (author), Moreira Moura, G.M. (author), Asghari, H. (author), Korczynski, M.T. (author)
This documents presents the final report of a two-year project to evaluate the impact of AbuseHUB, a Dutch clearinghouse for acquiring and processing abuse data on infected machines. The report was commissioned by the Netherlands Ministry of Economic Affairs, a co-funder of the development of AbuseHUB. AbuseHUB is the initiative of 9 Internet...
report 2016
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Asghari, H. (author), Ciere, M. (author), Van Eeten, M.J.G. (author)
Research on botnet mitigation has focused predominantly on methods to technically disrupt the commandand-control infrastructure. Much less is known about the effectiveness of large-scale efforts to clean up infected machines. We analyze longitudinal data from the sinkhole of Conficker, one the largest botnets ever seen, to assess the impact of...
conference paper 2015
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Moreira Moura, G.C. (author), Ganan, C.H.G. (author), Lone, Q.B. (author), Poursaied, P. (author), Asghari, H. (author), Van Eeten, M.J.G. (author)
IP address counts are typically used as a surrogate metric for the number of hosts in a network, as in the case of ISP rankings based on botnet infected addresses. However, due to effects of dynamic IP address allocation, such counts tend to overestimate the number of hosts, sometimes by an order of magnitude. In the literature, the rate at...
conference paper 2015
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Tajalizadehkhoob, S.T. (author), Asghari, H. (author), Ganan, C. (author), Van Eeten, M.J.G. (author)
conference paper 2014
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Asghari, H. (author), Van Eeten, M.J.G. (author), Mueller, M. (author)
Large and impressive data collection efforts often fail to make their data useful for answering policy questions. In this paper, we argue that this is due to a systematic gap between the ways measurement engineers think about their data, and how other disciplines typically make use of data. We recap our own efforts to use the data generated by a...
conference paper 2013
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Asghari, H. (author), Van Eeten, M.J.G. (author), Arnbak, A.M. (author), Van Eijk, N.A.N.M. (author)
Even though we increasingly rely on HTTPS to secure Internet communications, several landmark incidents in recent years have illustrated that its security is deeply flawed. We present an extensive multi-disciplinary analysis that examines how the systemic vulnerabilities of the HTTPS authentication model could be addressed. We conceptualize the...
report 2013
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Mueller, M. (author), Kuerbis, B. (author), Asghari, H. (author)
One of the most important but least-studied aspects of Internet policy is the emergence of a trading market for previously allocated Internet number blocks. Without unique Internet protocol numbers for the networks and devices attached, the Internet simply doesn’t work. The original Internet Protocol standard, known as IPv4, specified a 32-bit...
report 2012
Searched for: author:"Asghari, H."
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