By Assane Gueye, Jean C. Walrand, Venkat Anantharam (auth.), Tansu Alpcan, Levente Buttyán, John S. Baras (eds.)
Securing advanced and networked structures has develop into more and more vital as those platforms play an crucial function in smooth lifestyles on the flip of the - formation age. simultaneously, defense of ubiquitous verbal exchange, facts, and computing poses novel learn demanding situations. safety is a multi-faceted challenge a result of complexity of underlying undefined, software program, and community inter- pendencies in addition to human and social elements. It consists of selection making on a number of degrees and a number of time scales, given the restricted assets to be had to either malicious attackers and directors protecting networked platforms. - cision and video game thought presents a wealthy set of analyticalmethods and techniques to deal with numerous source allocation and decision-making difficulties coming up in safeguard. This edited quantity comprises the contributions offered on the inaugural convention on determination and video game conception for safeguard - GameSec 2010. those 18 articles (12 complete and six brief papers) are thematically labeled into the next six sections: – “Security investments and making plans” comprises articles, which current optimization equipment for (security) investments whilst dealing with adversaries. – “Privacy and anonymity” has 3 articles discussing situation privateness, - line anonymity, and monetary points of privateness. – “Adversarial and strong keep an eye on” includes 3 articles, which examine safeguard and robustness points of keep watch over in networks. – “Networksecurityandbotnets”hasfourarticlesfocusingondefensivestra- giesagainstbotnetsaswellasdetectionofmaliciousadversariesinnetworks. – “Authorizationandauthentication”hasanarticleonpasswordpracticesand one other one offering a game-theoretic authorization version. – “Theory and algorithms for safeguard” includes 4 articles on a variety of th- retic and algorithmic elements of security.
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Extra info for Decision and Game Theory for Security: First International Conference, GameSec 2010, Berlin, Germany, November 22-23, 2010. Proceedings
3 2 3 The intuition is that our attacker model represents the ensemble of individual attackers that are likely to discover the weakest link. As defense costs are constant for each threat, the decision to defend upon revelation is cogent. Otherwise it is always better not to commission the pentest in step 1. Optimal Information Security Investment with Penetration Testing 25 3. An attack occurs if at least one xi ≤ z · a. If so, the defender learns which link i was the weakest and incurs a loss of z ·a.
Buttyan, and J. ): GameSec 2010, LNCS 6442, pp. 21–37, 2010. c Springer-Verlag Berlin Heidelberg 2010 22 R. B¨ ohme and M. F´elegyh´ azi Penetration testing is also referred to as “ethical hacking” because the commissioned penetration testers investigate the target system from an attacker’s point of view, reporting weaknesses rather than exploiting them. The aim of this work is to study the added beneﬁts and costs of penetration testing to the entire system defense. The similarity between pentesting and attacks leads to the intuition that information revealed by pentests should be modeled in exactly the same way as information revealed by attacks.
R. B¨ ohme and M. F´elegyh´ azi nature s ye ... ∗ T2 4. defend? 3. attacked? 2. test successful? 1. commission pentest? no choose proactive defense k 2. successful? 1. pentest? player t=3 1. pentest? t=2 4. defend? t=1 3. attacked? t=0 2. successful? 26 ... T1 ∗ T2 ∗ ∗ T2 ∗ T2 ∗ ∗ T2 ∗ .. T2 T1 k= T2 T2 T1 0 T1 T0 proactive ... ... S .. ... T1 T1 ... T1 T2 ... T1 T1 ... T1 T2 ... reactive defense Fig. 2. Extensive form of the optimization problem ... Optimal Information Security Investment with Penetration Testing 27 Theorem 1.