Category Archives: Security psychology

Security Protocols 2015

I’m at the 23rd Security Protocols Workshop, whose theme this year is is information security in fiction and in fact. Engineering is often inspired by fiction, and vice versa; what might we learn from this?

I will try to liveblog the talks in followups to this post.

Whodunnit? Fascinating Forensics by BBC’s Naked Scientists

BBC’s Naked Scientists recently did an hour-long show with live audience about forensic science,  during which they solved a (fictitious) murder with the help of six forensic scientists and practitioners.

Chris Smith and Ginny Smith covered the forensic process from crime scene to court room and discussed all the evidence in between, including how to retrieve forensic evidence from a crime scene, digital forensics and the (lack of) randomness of numbers, toxicology, pathology, eye-witness testimony and our work on motion-based lie detection.

You can find the podcast here.

Decepticon: International Conference on Deceptive Behavior

Call for papers

We are proud to present DECEPTICON 2015 – International Conference on Deceptive Behavior, to be held 24-26 August 2015 at the University of Cambridge, UK. Decepticon brings together researchers, practitioners, and like-minded individuals with a taste for interdisciplinary science in the detection and prevention of deception.

We are organising two panel sessions; one on Future Directions in Lie Detection Research with Aldert Vrij, Par-Anders Granhag, Steven Porter and Timothy Levine, and one on Technology Assisted Lie Detection with Jeff Hancock, Judee Burgoon, Bruno Verschuere and Giorgio Ganis. We broadly and warmly welcome people with varying scientific backgrounds. To cover the diversity of approaches to deception research, our scientific committee members are experts in fields from psychology to computer science, and from philosophy to behavioral economics. For example, scientific committee members from the University of Cambridge are Ross Anderson, Nicholas Humphrey, Peter Robinson and Sophie Van Der Zee.

We strongly encourage practitioners, academics and students alike to submit abstracts that touch on the topic of deception. The extended deadline for abstract submissions (max. 300 words) for an oral, panel or poster presentation is 8 APRIL 2015. Interested in attending, but don’t feel like presenting? You can register for the conference here.

Please visit our webpage for more information. We are happy to answer any questions!

We hope to see you in Cambridge,



Talk in Oxford at 5pm today on the ethics and economics of privacy in a world of Big Data

Today at 5pm I’ll be giving the Bellwether Lecture at the Oxford Internet Institute. My topic is Big Conflicts: the ethics and economics of privacy in a world of Big Data.

I’ll be discussing a recent Nuffield Bioethics Council report of which I was one of the authors. In it, we asked what medical ethics should look like in a world of ‘Big Data’ and pervasive genomics. It will take the law some time to catch up with what’s going on, so how should researchers behave meanwhile so that the people whose data we use don’t get annoyed or surprised, and so that we can defend our actions if challenged? We came up with four principles, which I’ll discuss. I’ll also talk about how they might apply more generally, for example to my own field of security research.

Media coverage “to freeze or not to freeze” paper

On the 5th of January this year we presented a paper on the automatic detection of deception based on full-body movements at HICSS (Hawaii), which we blogged about here at LBT. We measured the movements of truth tellers and liars using full-body motion capture suits and found that liars move more than truth tellers; when combined with interviewing techniques designed to increase the cognitive load of liars, but not of truth tellers, liars even moved almost twice as much as truth tellers. These results indicate that absolute movement, when measured automatically, may potentially be a reliable cue to deceit. We are now aiming to find out if this increase in body movements when lying is stable across situations and people. Simultaneously, we are developing two lines of technology that will make this method more usable in practice. First, we are building software to analyse behaviors in real-time. This will enable us to analyse behavior whilst it is happening (i.e., during the interview), instead of afterwards. Second, we are investigating remote ways to analyse behavior, so interviewees will not have to wear a body-suit when being interviewed. We will keep you updated on new developments.

In the meantime, we received quite a lot of national and international media attention. Here is some tv and radio coverage on our work by Dailymotion, Fox (US), BBC world radio, Zoomin TV (NL), WNL Vandaag de dag (NL, deel 2, starts at 5:20min), RTL Boulevard (NL), Radio 2 (NL), BNR (NL), Radio 538 (NL). Our work was also covered by newspapers, websites and blogs, including the Guardian, the Register, the Telegraph, the Telegraph incl. polygraphthe Daily Mail, Mail Online, Cambridge News, King’s College Cambridge, Lancaster University, Security Lancaster, Bruce Schneier’s blog, International Business TimesRT,   PC World, PC Advisor, Engadget, News Nation, Techie News, ABP Live, TweakTown, Computer WorldMyScience, King World News, La Celosia (Spanish),de Morgen (BE), NRC (NL), Algemeen Dagblad (NL), de Volkskrant (NL), KIJK (NL), and RTV Utrecht (NL).



Can we have medical privacy, cloud computing and genomics all at the same time?

Today sees the publication of a report I helped to write for the Nuffield Bioethics Council on what happens to medical ethics in a world of cloud-based medical records and pervasive genomics.

As the information we gave to our doctors in private to help them treat us is now collected and treated as an industrial raw material, there has been scandal after scandal. From failures of anonymisation through unethical sales to the catastrophe, things just seem to get worse. Where is it all going, and what must a medical data user do to behave ethically?

We put forward four principles. First, respect persons; do not treat their confidential data like were coal or bauxite. Second, respect established human-rights and data-protection law, rather than trying to find ways round it. Third, consult people who’ll be affected or who have morally relevant interests. And fourth, tell them what you’ve done – including errors and security breaches.

The collection, linking and use of data in biomedical research and health care: ethical issues took over a year to write. Our working group came from the medical profession, academics, insurers and drug companies. We had lots of arguments. But it taught us a lot, and we hope it will lead to a more informed debate on some very important issues. And since medicine is the canary in the mine, we hope that the privacy lessons can be of value elsewhere – from consumer data to law enforcement and human rights.

Launch of security economics MOOC

TU Delft has just launched a massively open online course on security economics to which three current group members (Sophie van der Zee, David Modoc and I) have contributed lectures, along with one alumnus (Tyler Moore). Michel van Eeten of Delft is running the course (Delft does MOOCs while Cambridge doesn’t yet), and there are also talks from Rainer Boehme. This was pre-announced here by Tyler in November.

The videos will be available for free in April; if you want to take the course now, I’m afraid it costs $250. The deal is that EdX paid for the production and will sell it as a professional course to security managers in industry and government; once that’s happened we’ll make it free to all. This is the same basic approach as with my book: rope in a commercial publisher to help produce first-class content that then becomes free to all. But if your employer is thinking of giving you some security education, you could do a lot worse than to support the project and enrol here.

Technology assisted deception detection (HICSS symposium)

The annual symposium “Credibility Assessment and Information Quality in Government and Business” was this year held on the 5th and 6th of January as part of the “Hawaii International Conference on System Sciences” (HICSS). The symposium on technology assisted deception detection was organised by Matthew Jensen, Thomas Meservy, Judee Burgoon and Jay Nunamaker. During this symposium, we presented our paper “to freeze or not to freeze” that was posted on this blog last week, together with a second paper on “mining bodily cues to deception” by Dr. Ronald Poppe. The talks were of very high quality and researchers described a wide variety of techniques and methods to detect deceit, including mouse clicks to detect online fraud, language use on social media and in fraudulent academic papers and the very impressive avatar that can screen passengers when going through airport border control. I have summarized the presentations for you; enjoy!

 Monday 05-01-2015, 09.00-09.05

Introduction Symposium by Judee Burgoon

This symposium is being organized annually during the HICSS conference and functions as a platform for presenting research on the use of technology to detect deceit. Burgoon started off describing the different types of research conducted within the Center for the Management of Information (CMI) that she directs, and within the National Center for Border Security and Immigration. Within these centers, members aim to detect deception on a multi-modal scale using different types of technology and sensors. Their deception research includes physiological measures such as respiration and heart rate, kinetics (i.e., bodily movement), eye-movements such as pupil dilation, saccades, fixation, gaze and blinking, and research on timing, which is of particular interest for online deception. Burgoon’s team is currently working on the development of an Avatar (DHS sponsored): a system with different types of sensors that work together for screening purposes (e.g., border control; see abstracts below for more information). The Avatar is currently been tested at Reagan Airport. Sensors include a force platform, Kinect, HD and thermo cameras, oculometric cameras for eye-tracking, and a microphone for Natural Language Processing (NLP) purposes. Burgoon works together with the European border management organization Frontex. Continue reading Technology assisted deception detection (HICSS symposium)

To freeze or not to freeze

We think we may have discovered a better polygraph.

Telling truth from lies is an ancient problem; some psychologists believe that it helped drive the evolution of intelligence, as hominids who were better at cheating, or detecting cheating by others, left more offspring. Yet despite thousands of years of practice, most people are pretty bad at lie detection, and can tell lies from truth only about 55% of the time – not much better than random.

Since the 1920s, law enforcement and intelligence agencies have used the polygraph, which measures the physiological stresses that result from anxiety. This is slightly better, but not much; a skilled examiner may be able to tell truth from lies 60% of the time. However it is easy for an examiner who has a preconceived view of the suspect’s innocence or guilt to use a polygraph as a prop to help find supporting “evidence” by intimidating them. Other technologies, from EEG to fMRI, have been tried, and the best that can be said is that it’s a complicated subject. The last resort of the desperate or incompetent is torture, where the interviewee will tell the interviewer whatever he wants to hear in order to stop the pain. The recent Feinstein committee inquiry into the use of torture by the CIA found that it was not just a stain on America’s values but ineffective.

Sophie van der Zee decided to see if datamining people’s body movements might help. She put 90 pairs of volunteers in motion capture suits and got them to interview each other; half the interviewees were told to lie. Her first analysis of the data was to see whether you could detect deception from mimicry (you can, but it’s not much better than the conventional polygraph) and to debug the technology.

After she joined us in Cambridge we had another look at the data, and tried analysing it using a number of techniques, some suggested by Ronald Poppe. We found that total body motion was a reliable indicator of guilt, and works about 75% of the time. Put simply, guilty people fidget more; and this turns out to be fairly independent of cultural background, cognitive load and anxiety – the factors that confound most other deception detection technologies. We believe we can improve that to over 80% by analysing individual limb data, and also using effective questioning techniques (as our method detects truth slightly more dependably than lies).

Our paper is appearing at HICSS, the traditional venue for detection-deception technology. Our task for 2015 will be to redevelop this for low-cost commodity hardware and test it in a variety of environments. Of course, a guilty man can always just freeze, but that will rather give the game away; we suspect it might be quite hard to fidget deliberately at exactly the same level as you do when you’re not feeling guilty. (See also press coverage.)

WEIS 2015 call for papers

The 2015 Workshop on the Economics of Information Security will be held at Delft, the Netherlands, on 22-23 June 2015. Paper submissions are due by 27 February 2015. Selected papers will be invited for publication in a special issue of the Journal of Cybersecurity, a new, interdisciplinary, open-source journal published by Oxford University Press.

We hope to see lots of you in Delft!