What is worse than reusing passwords?

Dr. Markus Jakobsson is Principal Scientist at Palo Alto Research Center. He is a founder of the security startup RavenWhite, which addresses security problems associated with authentication, malware and click-fraud. He is also one of the founders of SecurityCartoon, an educational approach targeting typical Internet users. He is a firm believer in technology to address security problems, but believes that a holistic view that includes the end user and his/her behavior is crucial. Unexpected user behavior can thwart the best security measures, and any security measure must be designed with social engineering and human failure in mind. Dr. Jakobsson's recent books Phishing and Countermeasures (Wiley, 2006) and Crimeware: Understanding New Attacks and Defenses (Symantec Press, 2008) chart new territory in online security. He received his PhD from University of California at San Diego in 1997.