• Examining a Video’s Changes Over Time Helps Flag Deepfakes

    It used to be that only Hollywood production companies with deep pockets and teams of skilled artists and technicians could make deepfake videos, realistic fabrications appearing to show people doing and saying things they never actually did or said. Not anymore – software freely available online lets anyone with a computer and some time on their hands create convincing fake videos. Whether used for personal revenge, to harass celebrities or to influence public opinion, deepfakes render untrue the age-old axiom that “seeing is believing.”

  • Device Vanishes on Command after Military Missions

    A polymer that self-destructs? While once a fictional idea, new polymers now exist that are rugged enough to ferry packages or sensors into hostile territory and vaporize immediately upon a military mission’s completion. This “James Bond”-like material is already being incorporated in military devices, but there is a potential for the materials in non-military applications.

  • We Need to Ban More Emerging Technologies

    With more and more innovation, there is less and less time to reflect on the consequences. To tame this onrushing tide, society needs dams and dikes. Just as has begun to happen with facial recognition, it’s time to consider legal bans and moratoriums on other emerging technologies. These need not be permanent or absolute, but innovation is not an unmitigated good. The more powerful a technology is, the more care it requires to safely operate.

  • The Big One: Back to the Future on the San Andreas Fault

    Maybe you’ve heard that the “Big One is overdue” on the San Andreas Fault. No one can predict earthquakes, so what does the science really say? Where does the information come from? And what does it mean? Earth scientists have been gathering data at key paleoseismic sites along sections of the San Andreas Fault to figure out the past timeline of earthquakes at each spot.

  • Improving Hail Forecasts with Facial Recognition Technique

    The same artificial intelligence technique typically used in facial recognition systems could help improve prediction of hailstorms and their severity. Instead of zeroing in on the features of an individual face, scientists trained a deep learning model called a convolutional neural network to recognize features of individual storms that affect the formation of hail and how large the hailstones will be, both of which are notoriously difficult to predict.

  • Setting the Stage for U.S. Leadership in 6G

    Every day there are more headlines about China’s rise in 5G, the next generation of wireless communications technologies, and the economic and national security risks to the United States that go along with these developing technologies. These concerns, particularly the threat of critical infrastructure disruptions, are valid—but the plight of the United States is in part self-inflicted. The U.S. government waited too long to tackle the difficult issues surrounding 5G. As a result, China has unprecedented clout on the global stage regarding the deployment and diffusion of advanced communications technologies. With decisive action today, the U.S. can ensure its status as the undisputed leader in wireless technology within 10 years. In doing so, it will lock in the ability to build secure 6G infrastructure with all the accompanying economic and national security benefits.

  • The Quantum Revolution Is Coming, and Chinese Scientists Are at the Forefront

    Quantum technology — an emerging field that could transform information processing and confer big economic and national-security advantages to countries that dominate it. To the dismay of some scientists and officials in the United States, China’s formidable investment is helping it catch up with Western research in the field and, in a few areas, pull ahead. Beijing is pouring billions into research and development and is offering Chinese scientists big perks to return home from Western labs. Last year, China had nearly twice as many patent filings as the United States for quantum technology overall, a category that includes communications and cryptology devices. China’s drive has sparked calls for more R&D funding in the United States.

  • Shoppers Targeted by Face‑Recognition Cameras in “Epidemic” of Surveillance

    There is an “epidemic” of facial recognition surveillance technology at privately owned sites in Britain, campaigners say. Big Brother Watch, a civil liberties group, found shopping centers, museums, conference centers and casinos had all used the software that compares faces captured by CCTV to those of people on watch lists, such as suspected terrorists or shoplifters. Privacy campaigners have criticized trials of the technology by police in London and Wales, questioning their legal basis.

  • Evaluate AI capabilities in Helping Paramedics

    Paramedics must make numerous life-saving decisions, often in the back of an ambulance with limited time. While they at times call doctors for additional medical directives, precious seconds tick away for the patient during these back-and-forth conversations. DHS S&T partnered with its Canadian counterpart to examine whether artificial intelligence could be used to improve that information overload.

  • A Guide to Not Killing or Mutilating Artificial Intelligence Research

    What’s the fastest way to build a jig-saw puzzle? That was the question posed by Michael Polanyi in 1962. An obvious answer is to enlist help. Polanyi found it obvious that the fastest way to build a jig-saw puzzle is to let everyone work on it together in full sight of each other. No central authority could accelerate progress. Polanyi, however, thought it “impossible and nonsensical” to guide science toward particular ends. Like in the jig-saw puzzle, no scientist understands more than a tiny fraction of the total domain. Joint opinion is reached when each scientist has overlapping knowledge with other scientists, “so that the whole of science will be covered by chains and networks of overlapping neighborhoods.” Intervention by a central authority can only “kill or mutilate” scientific progress, Polanyi argued; it “cannot shape it.”

  • Remotely Monitoring Nuclear Reactors with Antineutrino Detection

    Technology to measure the flow of subatomic particles known as antineutrinos from nuclear reactors could allow continuous remote monitoring designed to detect fueling changes that might indicate the diversion of nuclear materials. The monitoring could be done from outside the reactor vessel, and the technology may be sensitive enough to detect substitution of a single fuel assembly.

  • Russia's Nclear Propulsion Experiment a Cause for Worry

    An explosion last Tuesday at a Russian military test site caused a spike in radiation levels, forcing the evacuation of a small town. Experts say the incident occurred during the test of a new nuclear-powered cruise missile. Both superpowers experimented with nuclear propulsion of rockets during the cold war, but without success. Experts worry if a nuclear-powered cruise missile carries a conventional warhead to its target, an accident occurring with this missiles may turn what was meant to be a non-nuclear attack into a nuclear one, even if the explosion and radiation dispersion would be smaller relative to a “real” nuclear attack.

  • Hacking One of the World's Most Secure Industrial Programmable Logic Controllers (PLC)

    Researchers have managed to take control of a Siemens PLC, which is considered to be one of the safest controllers in the world. As part of the attack, the researchers analyzed and identified the code elements of the Siemens proprietary cryptographic protocol, and on the basis of their analysis, created a fake engineering station, an alternative to Siemens’ official station. The fake engineering station was able to command the controller according to the will of the attackers.

  • Bullet shape, Velocity Determine Blood Spatter Patterns

    Blood spatters are hydrodynamic signatures of violent crimes, often revealing when an event occurred and where the perpetrator and victim were located at the time of the crime. Gaining a better physical understanding of the fluid dynamical phenomena at play during gunshot spatters could enhance crime scene investigations.

  • Differentiating Earthquake from Underground Explosion

    Sandia National Laboratories researchers, as part of a group of National Nuclear Security Administration scientists, have wrapped up years of field experiments to improve the United States’ ability to differentiate earthquakes from underground explosions, key knowledge needed to advance the nation’s monitoring and verification capabilities for detecting underground nuclear explosions.