This talk will consider the concept of aggressive honeypot, the main idea of which is that defense can be aggressive, and the options how it may work. The speaker will touch upon such topics as de-anonymizing attackers, filtering and detecting non-bot attacks, determining the attacker’s technical skill level, getting control of the attacker. Alexey Sintsov will try to answer such questions as who can use these techniques, why they are useful, and how effective it can be. The audience will have a chance to take a look into real experiment, real samples of attacks, and results from the realization of this idea. The speaker will also discuss some more interesting things such as whether one can exploit vulnerabilities of third-party services or only client-side vulnerabilities (all of them can be leveraged, and the audience will be shown how it can be done with real examples). Alexey graduated from Saint-Petersburg State Polytechnic University with a degree in Information Security of Computer Systems department (Russia). Since 2001 he has been working on practical questions in the field of security analysis and searching for vulnerabilities and exploit development. Now he works for Nokia as a Senior Security Engineer and also doing column in the ][akep magazine. Alexey is a co-founder of first Russian DEF CON group — DCG#7812, and is also a co-organizer of the Zeronights conference. Some fruits of his labor can be found here: http://www.exploit-db.com/author/?a=549. Berlin, GermanyAlexey Sintsov Alexey Sintsov