Miguel E. Andrés. What is information leakage? An incident where the confidentiality of information has been compromised. Examples [2010] Gmail accounts.

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Presentation transcript:

Miguel E. Andrés

What is information leakage? An incident where the confidentiality of information has been compromised. Examples [2010] Gmail accounts of Chinese dissidents and human rights activists were hacked. [2011] Passwords of U.S. White House officials, Chinese political activists, officials in several Asian countries, and others were hacked. Result: After cross acusation with the Chinese goverment because the source of the cyber attacks, Google moved all its servers out of China.

International non-profit organization that publishes submissions of private secret and classified media from anonymous news sources Released US confidential documents about war in Afghanistan Released US diplomatic cables Released US confidential documents about the war in Irak Result: one of the biggest diplomatic crisis in the history of the U.S. What is information leakage? An incident where the confidentiality of information has been compromised. Examples

Online multiplayer gaming and media service for use with the PS 3 [April 2011] The service was hacked and led to information leakage of 100 million users. The information leaked includes users’ name, home address, , birthday, passwords, credit card information and more confidential data Result: Reputation damage + millionaire economic losses (due to the shut down of the service and multiple sues for negligence) What is information leakage? An incident where the confidentiality of information has been compromised. Examples

What is information leakage? An incident where the confidentiality of information has been compromised. What kind of incident? Human ``negligence’’ (phishing scams, infected computer, etc) Acts of sabotage (for example from an insider) Bugs in the system (either intended or unintended)

> Mr Burns sucks! Internet Crowds | Tor | Anonymizer > Mr Burns sucks! > Mr burns sucks

Internet Crowds | Tor | Anonymizer

? Internet Crowds | Tor | Anonymizer Tor Crowds

Internet Crowds | Tor | Anonymizer

Chapter II [TACAS 08] Conditional Probabilities over probabilistic and nondeterministic systems Chapter II [TACAS 08] Conditional Probabilities over probabilistic and nondeterministic systems Chapter III [TACAS 10] Computing the Leakage of Information Hiding Systems Chapter III [TACAS 10] Computing the Leakage of Information Hiding Systems Chapter IV [QEST 10 & Journal TCS] Information hiding in concurrent systems Chapter IV [QEST 10 & Journal TCS] Information hiding in concurrent systems Chapter V [HVC 08] Significant diagnostic counterexample generation Chapter V [HVC 08] Significant diagnostic counterexample generation Chapter VI [CONCUR 10 & LICS 10 & TCS 10 & Journal Computer Security] Extensions (overview) Chapter VI [CONCUR 10 & LICS 10 & TCS 10 & Journal Computer Security] Extensions (overview)