-
Are Mass Shootings Contagious?
High-fatality shootings are becoming more frequent, raising the question of whether or not mass shootings are contagious, that is, whether or not one mass shooter copycats the actions of an earlier shooter. These questions arise especially when several mass shooting events are clustered in time. The evidence is not clear-cut either way.
-
-
Studying Gun Violence
Otto Meisenheimer was a 21-year old college student when he was killed in 1977 in random shooting at a bowling alley outside of Chicago. His family has committed significant funds to establish the Center for the Prevention of Gun Violence in his name at Indiana University School of Public Health.
-
-
Few Island Nations with Potential to Produce Enough Food in a Nuclear Winter
New Zealand is one of only a few island nations that could continue to produce enough food to feed its population in a nuclear winter, researchers have found. The term “nuclear winter” refers to reduced sunlight and cooler temperatures caused by soot in the atmosphere following a nuclear war in the Northern Hemisphere.
-
-
What China’s Surveillance Balloon Says About U.S.-China Relations
The question of what information the Chinese were trying to uncover using a balloon – when China’s many satellites could glean this same information – is intriguing. A far more important issue, however, is what this episode says about the ability, or more accurately inability, of Washington and Beijing to manage a future crisis. Worryingly, it appears that neither the United States nor China is prepared for a serious crisis.
-
-
Extremist Couple Charged in Plot to Destroy Baltimore’s Power Grid
Two extremists have been charged Monday with conspiracy to attack and destroy energy facilities around Baltimore in a plot to “completely destroy” the city. The man, the founder of the neo-Nazi group Atomwaffen, and his accomplice appear to be part of trend among domestic violent extremists to target the U.S. electrical grid. In recent years, DHS and the FBI have discovered several such conspiracies to take down the power system, with the most recent attacks taking place in North Carolina and Washington State.
-
-
Chinese Spy Balloon Over the U.S.: An Aerospace Expert Explains How the Balloons Work and What They Can See
Balloons are much closer to the ground than any satellites, so they can see even more clearly. And balloons are moving relatively slowly, so they also have a degree of persistence. However, spying is not usually done these days with balloons because they are a relatively easy target and are not completely controllable.
-
-
EFF Files Amicus Briefs in Two Important Geofence Search Warrant Cases
Unlike traditional warrants for electronic records, a geofence warrant doesn’t start with a particular suspect or even a device or account; instead police request data on every device in a given geographic area during a designated time period, regardless of whether the device owner has any connection to the crime under investigation. The EFF argues these warrants are unconstitutional “general warrants” because they don’t require police to show probable cause to believe any one device was somehow linked to the crime under investigation.
-
-
China 'Spy Balloon:' Why Doesn't the Pentagon Shoot It Down?
Espionage is all about secrets — keeping and revealing them. But here’s what we can say about the alleged spy balloon.
-
-
Suspected Israeli Drone Strike in Iran Part of New 'Containment Strategy'
Four Israeli kamikaze quadcopters hit and destroyed an Iranian military facility in Isfahan on January 28. The production facility, located inside a military base, was used to produce drones and mid-range missiles. In the last months, Israel has expanded its attacks on Iran’s military, targeting not only nuclear weapons-related targets but also production facilities for advanced arms.
-
-
FloodNet Tracking System Set for Expansion Across All Five NYC Boroughs
FloodNet, the first-ever New York City flood-monitoring network, has received $7.2 million in city funding that will greatly increase the number of monitored flood-prone locations from 31 to 500 over the next five years. The network expansion is slated to begin in February.
-
-
Israel to Enact New Counterterrorism Measures After Attacks
In the wake of deadly weekend terrorist attacks in Jerusalem, the Israeli government has said it would seek to speed up the process for citizens to obtain firearms.
-
-
German and U.S. Tanks Will Be Critical in Ukraine’s Next Phase Against Russia
The main battle tanks that the United States and Germany have agreed to provide Ukraine will help its forces punch through Russian fortifications and retake lost territory.
-
-
Sandia, AMD Collaborate to Support Nuclear Stockpile Mission
Sandia National Laboratories, in partnership with Los Alamos and Lawrence Livermore national labs, has awarded a contract to AMD that funds research and development of advanced memory technologies expected to accelerate high-performance simulation and computing applications in support of the nation’s stockpile stewardship mission.
-
-
U.S. Dismantles Ransomware Network Responsible for More Than $100 Million in Extortion
An international ransomware network that extorted more than $100 million from hundreds of victims around the world has been brought down following a monthslong infiltration by the FBI. The group known as Hive targeted more than 1,500 victims, including hospitals, school districts and financial firms in more than 80 countries.
-
-
U.S. Secret Service Report Examines Five Years of Mass Violence Data
The U.S. Secret Service National Threat Assessment Center (NTAC) the other day released a comprehensive report examining 173 incidents of targeted violence and highlighting the observable commonalities among the attackers.
-
More headlines
The long view
Are We Ready for a ‘DeepSeek for Bioweapons’?
Anthropic’s Claude 4 is a warning sign: AI that can help build bioweapons is coming, and could be widely available soon. Steven Adler writes that we need to be prepared for the consequences: “like a freely downloadable ‘DeepSeek for bioweapons,’ available across the internet, loadable to the computer of any amateur scientist who wishes to cause mass harm. With Anthropic’s Claude Opus 4 having finally triggered this level of safety risk, the clock is now ticking.”
“The Federal Government Is Gone”: Under Trump, the Fight Against Extremist Violence Is Left Up to the States
As President Donald Trump guts the main federal office dedicated to preventing terrorism, states say they’re left to take the lead in spotlighting threats. Some state efforts are robust, others are fledgling, and yet other states are still formalizing strategies for addressing extremism. With the federal government largely retreating from focusing on extremist dangers, prevention advocates say the threat of violent extremism is likely to increase.
Luigi Mangione and the Making of a ‘Terrorist’
Discretion is crucial to the American tradition of criminal law, Jacob Ware and Ania Zolyniak write, noting that “lawmakers enact broader statutes to empower prosecutors to pursue justice while entrusting that they will stay within the confines of their authority and screen out the inevitable “absurd” cases that may arise.” Discretion is also vital to maintaining the legitimacy of the legal system. In the prosecution’s case against Luigi Mangione, they charge, “That discretion was abused.”
Autonomous Weapon Systems: No Human-in-the-Loop Required, and Other Myths Dispelled
“The United States has a strong policy on autonomy in weapon systems that simultaneously enables their development and deployment and ensures they could be used in an effective manner, meaning the systems work as intended, with the same minimal risk of accidents or errors that all weapon systems have,” Michael Horowitz writes.
Ukraine Drone Strikes on Russian Airbase Reveal Any Country Is Vulnerable to the Same Kind of Attack
Air defense systems are built on the assumption that threats come from above and from beyond national borders. But Ukraine’s coordinated drone strike on 1 June on five airbases deep inside Russian territory exposed what happens when states are attacked from below and from within. In low-level airspace, visibility drops, responsibility fragments, and detection tools lose their edge. Drones arrive unannounced, response times lag, coordination breaks.
Shots to the Dome—Why We Can’t Model US Missile Defense on Israel’s “Iron Dome”
Starting an arms race where the costs are stacked against you at a time when debt-to-GDP is approaching an all-time high seems reckless. All in all, the idea behind Golden Dome is still quite undercooked.