A little-known spyware maker based in Minnesota has been hacked, TechCrunch reports, revealing thousands of devices around the world under its stealthy remote surveillance. From the report: A person with knowledge of the breach provided TechCrunch with a cache of files taken from the company's servers containing detailed device activity logs from the phones, tablets, and computers that Spytech monitors, with some of the files dated as recently as early June.

TechCrunch verified the data as authentic in part by analyzing some of the exfiltrated device activity logs that pertain to the company's chief executive, who installed the spyware on one of his own devices. The data shows that Spytech's spyware -- Realtime-Spy and SpyAgent, among others -- has been used to compromise more than 10,000 devices since the earliest-dated leaked records from 2013, including Android devices, Chromebooks, Macs, and Windows PCs worldwide. Spytech is the latest spyware maker in recent years to have itself been compromised, and the fourth spyware maker known to have been hacked this year alone, according to TechCrunch's running tally.

A NASA committee determined that the Chandra X-ray Observatory would have to cease operations under the proposed budget cuts in NASA's 2025 budget. The committee reviewed various options but found that only shutting down Chandra fit within the proposed budget, although alternatives could keep the observatory running with limited capabilities. SpaceNews reports: NASA established the Operations Paradigm Change Review (OPCR) committee this spring to look at ways of reducing the costs of operating Chandra and the Hubble Space Telescope as part of broader efforts to deal with a billion-dollar shortfall in agency science funding. The fiscal year 2025 budget proposal included a 40% cut in Chandra's budget, with further reductions through 2029, while cutting Hubble's budget by 10% in 2025. Astronomers strongly opposed the proposed cuts, particularly for Chandra. They argued that the reductions would effectively shut down the telescope, a conclusion backed by Patrick Slane, director of the Chandra X-Ray Center, in an open letter shortly after the release of the budget proposal.

The OPCR concurred. "The committee agreed that the continuation of a scientifically viable Chandra mission is not possible within the funding guidance," said Rob Kennicutt, an astronomer from the University of Arizona and Texas A&M University who served on the review committee, in a July 23 presentation at a meeting of the Astrophysics Advisory Committee, or APAC. "This is a serious threat to the observatory." Shutting down Chandra was one of four options presented to the OPCR by the Chandra team and the only one, he said, that fit within NASA's proposed budget profile. Three others would keep Chandra going with reduced capabilities and with budgets higher than what NASA proposed but below current levels. "We think it's possible to run Chandra for less money" than today, he said, "but more than what they were given."

New Zealand has lodged a formal complaint with the International Olympic Committee (IOC) after a Canadian soccer "support staff member" allegedly flew a drone over their training session. The Canadian Olympic Committee has apologized, expressed shock and disappointment, and launched an investigation into the incident. ESPN reports: The COC said the individual has been detained by French authorities. "Team support members immediately reported the incident to police, leading to the drone operator, who has been identified as a support staff member of the wider Canadian Women's football team, to be detained," the NZOC said in a statement. "The NZOC has formally lodged the incident with the IOC integrity unit and has asked Canada for a full review. [...]

For their part, Canada has said it was also stunned. The COC said it was made aware that a "non-accredited" member of its support team had used a drone to record the Silver Ferns' practice. "The Canadian Olympic Committee stands for fair-play and we are shocked and disappointed. We offer our heartfelt apologies to New Zealand Football, to all the players affected, and to the New Zealand Olympic Committee." It added it was "reviewing next steps" with the IOC, the Paris organizing committee and FIFA. The person responsible was Joseph Lombardi, an unaccredited analyst with Canada Soccer. As a result of these findings, Lombardi is being removed from the Canadian Olympic Team and sent home immediately. The same punishment will be applied to Jasmine Mander, the assistant coach to whom Mr. Lombardi sent information to.

Furthermore, Head Coach Bev Priestman has removed herself from coaching the match against New Zealand on July 25th and the entire Canada Soccer staff will undergo mandatory ethics training.

An anonymous reader quotes a report from Ars Technica: Angry T-Mobile customers have filed a class action lawsuit over the carrier's decision to raise prices on plans that were advertised as having a lifetime price guarantee. "Based upon T-Mobile's representations that the rates offered with respect to certain plans were guaranteed to last for life or as long as the customer wanted to remain with that plan, each Plaintiff and the Class Members agreed to these plans for wireless cellphone service from T-Mobile," said the complaint (PDF) filed in US District Court for the District of New Jersey. "However, in May 2024, T-Mobile unilaterally did away with these legacy phone plans and switched Plaintiffs and the Class to more expensive plans without their consent."

The complaint, filed on July 12, has four named plaintiffs who live in New Jersey, Georgia, Nevada, and Pennsylvania. They are seeking to represent a class of all US residents "who entered into a T-Mobile One Plan, Simple Choice plan, Magenta, Magenta Max, Magenta 55+, Magenta Amplified or Magenta Military Plan with T-Mobile which included a promised lifetime price guarantee but had their price increased without their consent and in violation of the promises made by T-Mobile and relied upon by Plaintiffs and the proposed class." The complaint seeks "restitution of all amounts obtained by Defendant as a result of its violation," plus interest. It also seeks statutory and punitive damages, and an injunction to prevent further "wrongful, unlawful, fraudulent, deceptive, and unfair conduct." The report notes that the lawsuit centers around T-Mobile's broken "Un-contract" promise made in January 2017, which assured customers that their T-Mobile One plan prices would never increase unless they decided to change their plans. Despite the guarantee, T-Mobile included a significant caveat in a FAQ on its website, stating they would only cover the final month's bill if the price was raised and the customer decided to cancel. Many customers missed this caveat, leading to confusion and frustration when prices were later hiked.

The lawsuit also addresses the transition from the "Un-contract" to a new "Price Lock" guarantee, which initially offered more protection but was later weakened, causing further dissatisfaction. The FCC said it has received around 1,600 complaints regarding these price hikes by late June.

The US is warning homegrown tech startups and venture capital firms that some foreign investments may be fronts for hostile nations seeking data and technology for their governments or to undermine American businesses. From a report: Several US intelligence agencies are spotlighting the concern in a joint bulletin Wednesday to small businesses, trade associations and others associated with the venture capital community, according to the National Counterintelligence and Security Center. "Unfortunately our adversaries continue to exploit early-stage investments in US startups to take their sensitive data," said Michael Casey, director of the NCSC. "These actions threaten US economic and national security and can directly lead to the failure of these companies."

Washington has ramped up scrutiny of investments related to countries it considers adversaries, most notably China, as advanced technologies with breakthrough commercial potential, such as artificial intelligence, can also be used to enhance military or espionage capabilities. [...] Small tech companies and venture capitalists "are not in a position to assess the national security implications of their investments," said Mark Montgomery, former executive director of the Cyberspace Solarium Commission, which was assigned to develop a US cybersecurity strategy. "There are way too many examples where what appears to be, at best, potentially only dual-use or non-military-use technology is quickly twisted and used as a national security tool."

A surge in new oil and gas production in 2024 threatens to unleash nearly 12 billion tonnes of planet-heating emissions, with the world's wealthiest countries -- such as the US and the UK -- leading a stampede of fossil fuel expansion in spite of their climate commitments, new data reveals. From a report: The new oil and gas field licences forecast to be awarded across the world this year are on track to generate the highest level of emissions since those issued in 2018, as heatwaves, wildfires, drought and floods cause death and destruction globally, according to analysis of industry data by the International Institute for Sustainable Development (IISD). The 11.9bn tonnes of greenhouse gas emissions -- which is roughly the same as China's annual carbon pollution -- resulting over their lifetime from all current and upcoming oil and gas fields forecast to be licensed by the end of 2024 would be greater than the past four years combined. The projection includes licences awarded as of June 2024, as well as the oil and gas blocks open for bidding, under evaluation or planned.

Meanwhile, fossil fuel firms are ploughing more money into developing new oil and gas sites than at any time since the 2015 Paris climate deal, when the world's governments agreed to take steps to cut emissions and curb global heating. The world's wealthiest countries are economically best placed -- and obliged under the Paris accords -- to lead the transition away from fossil fuels to cleaner energy sources. But these high-capacity countries with a low economic dependence on fossil fuels are spearheading the latest drilling frenzy despite dwindling easy-to-reach reserves, handing out 825 new licences in 2023, the largest number since records began.

Negotiations on a global tax deal have extended beyond the June 30 deadline, with countries now looking to the G20 finance leaders meeting for progress. "The stakes in the negotiations are high," reports Reuters. "A failure to reach agreement on final terms could prompt several countries to reinstate their taxes on U.S. tech giants and risk punitive duties on billions of dollars in exports to the U.S." Some countries, like Canada, have already implemented their own digital services tax. Reuters reports: The so-called "Pillar 1" arrangement, part of a 2021 global two-part tax deal, aims to replace unilateral digital services taxes (DSTs) on U.S. tech giants including Alphabet's Google, Amazon.com and Apple through a new mechanism to share taxing rights on a broader, global group of companies. Standstill agreements under which Washington has suspended threatened trade retaliation against seven countries -- Austria, Britain, France, India, Italy, Spain and Turkey -- expired on June 30, but the U.S. has not taken steps to impose tariffs.

Discussions on the matter are continuing. An Italian government source said that European countries were seeking assurances that the U.S. tariffs on some $2 billion worth of annual imports from French Champagne to Italian handbags and optical lenses remained frozen while the talks continue, including at the G20 meeting in Rio de Janeiro. A European Union document prepared for the G20 meeting lists finalizing the international tax deal as a "top priority." It said the G20 should urge countries and jurisdictions participating in the tax deal "to finalize discussions on all aspects of Pillar 1, with a view to signing the Multilateral Convention (MLC) by summer end and ratifying it as soon as possible." "Treasury continues to oppose all tax measures that discriminate against U.S. businesses," a U.S. Treasury spokesperson said in response to Canada's move. "We encourage all countries to finalize the work on the Pillar 1 agreement. We are in active discussions on next steps related to the existing DST joint statements."

On Sunday, global temperatures reached their highest levels in recorded history (source may be paywalled; alternative source), with a daily average of 17.09 degrees Celsius (62.76 degrees Fahrenheit). "The historic day comes on the heels of 13 straight months of unprecedented temperatures and the hottest year scientists have ever seen," adds the Washington Post, citing preliminary data from the Copernicus Climate Change Service. From the report: Though Sunday was only slightly warmer than the world's previous hottest day, Copernicus researchers noted, it was extraordinarily hotter than anything that came before. Before July 2023, Earth's daily average temperature record -- set in August 2016 -- was 16.8 degrees Celsius (62.24 degrees Fahrenheit). But in the past year, the global has exceeded that old record on 57 days.

Scientists have been tracking global temperatures only for the past few centuries. Yet there is good reason to believe that Sunday was the hottest day on Earth since the start of the last Ice Age more than 100,000 years ago. Research from paleoclimate scientists -- who use tree rings, ice cores, lake sediments and other ancient material to understand past environments -- suggests that recent heat would have been all but impossible over the last stretch of geologic time. "We are in truly uncharted territory," Copernicus director Carlo Buontempo said in a statement. "And as the climate keeps warming, we are bound to see records being broken in future months and years. What is truly staggering is how large the difference is between the temperature of the last 13 months and the previous temperature records."

According to Bloomberg, hackers have leaked internal documents stolen from Leidos Holdings, one of the largest IT services providers of the U.S. government. Reuters reports: The company recently became aware of the issue and believes the documents were taken during a previously reported breach of a Diligent Corp. system it used, the report said, adding that Leidos is investigating it. The Virginia-based company, which counts the U.S. Department of Defense as its primary customer, used the Diligent system to host information gathered in internal investigations, the report added, citing a filing from June 2023. A spokesperson for Diligent said the issue seems to be related to an incident from 2022, affecting its subsidiary Steele Compliance Solutions. The company notified impacted customers and had taken corrective action to contain the incident in November 2022.

During Alphabet's second-quarter earnings call today, Alphabet CFO Ruth Porat announced the organization will spend an additional $5 billion on its self-driving subsidiary, Waymo. "This new round of funding, which is consistent with recent annual investment levels, will enable Waymo to continue to build the world's leading autonomous driving technology company," said Porat. TechCrunch reports: Porat noted that Google will focus on improving overall efficiencies in its "other bets" segment, which includes innovative projects that are distinct from the tech giant's core search and advertising business. Other companies in this segment are Verily, Calico, Google Ventures and drone company Wing. "Waymo is an important example of this, with its technical leadership coupled with progress on operational performance," Porat continued. The executive noted that parent company Alphabet's 10-Q form, which has yet to be filed, will have more details.

Switzerland has enacted the "Federal Law on the Use of Electronic Means for the Fulfillment of Government Tasks" (EMBAG), mandating open-source software (OSS) in the public sector to enhance transparency, security, and efficiency. "This new law requires all public bodies to disclose the source code of software developed by or for them unless third-party rights or security concerns prevent it," writes ZDNet's Steven Vaughan-Nichols. "This 'public money, public code' approach aims to enhance government operations' transparency, security, and efficiency." From the report: Making this move wasn't easy. It began in 2011 when the Swiss Federal Supreme Court published its court application, Open Justitia, under an OSS license. The proprietary legal software company Weblaw wasn't happy about this. There were heated political and legal fights for more than a decade. Finally, the EMBAG was passed in 2023. Now, the law not only allows the release of OSS by the Swiss government or its contractors, but also requires the code to be released under an open-source license "unless the rights of third parties or security-related reasons would exclude or restrict this."

Professor Dr. Matthias Sturmer, head of the Institute for Public Sector Transformation at the Bern University of Applied Sciences, led the fight for this law. He hailed it as "a great opportunity for government, the IT industry, and society." Sturmer believes everyone will benefit from this regulation, as it reduces vendor lock-in for the public sector, allows companies to expand their digital business solutions, and potentially leads to reduced IT costs and improved services for taxpayers.

In addition to mandating OSS, the EMBAG also requires the release of non-personal and non-security-sensitive government data as Open Government Data (OGD). This dual "open by default" approach marks a significant paradigm shift towards greater openness and practical reuse of software and data. Implementing the EMBAG is expected to serve as a model for other countries considering similar measures. It aims to promote digital sovereignty and encourage innovation and collaboration within the public sector. The Swiss Federal Statistical Office (BFS) is leading the law's implementation, but the organizational and financial aspects of the OSS releases still need to be clarified.

For decades, American and Chinese scientists collaborated on supercomputers. But Chinese scientists have become more secretive as the U.S. has tried to hinder China's technological progress, and they have stopped participating altogether in a prominent international supercomputing forum. From a report: The withdrawal marked the end of an era and created a divide that Western scientists say will slow the development of AI and other technologies as countries pursue separate projects. The new secrecy also makes it harder for the U.S. government to answer a question it deems essential to national security: Does the U.S. or China have faster supercomputers? Some academics have taken it upon themselves to hunt for clues about China's supercomputing progress, scrutinizing research papers and cornering Chinese peers at conferences.

Supercomputers have become central to the U.S.-China technological Cold War because the country with the faster supercomputers can also hold an advantage in developing nuclear weapons and other military technology. "If the other guy can use a supercomputer to simulate and develop a fighter jet or weapon 20% or even 1% better than yours in terms of range, speed and accuracy, it's going to target you first, and then it's checkmate," said Jimmy Goodrich, a senior adviser for technology analysis at Rand, a think tank. The forum that China recently stopped participating in is called the Top500, which ranks the world's 500 fastest supercomputers. While the latest ranking, released in June, says the world's three fastest computers are in the U.S., the reality is probably different.

The US transportation department said on Tuesday it was opening an investigation into Delta Air Lines after the carrier canceled more than 5,000 flights since Friday as it struggles to recover from a global cyber outage that snarled airlines worldwide. From a report: While other carriers have been able to resume normal operations, Delta has continued to cancel hundreds of flights daily because of problems with its crew scheduling system. Since Friday Delta has been cancelling 30% or more of its flights daily through Monday, axing 444 flights on Tuesday, or 12% of its schedule as of 11.00am and delaying another 590, or 16%, according to FlightAware, after cancelling 1,150 on Monday.

The transportation secretary, Pete Buttigieg, said on Tuesday the investigation was to "ensure the airline is following the law and taking care of its passengers during continued widespread disruptions ... Our department will leverage the full extent of our investigative and enforcement power to ensure the rights of Delta's passengers are upheld." Delta said it was in receipt of the USDOT notice of investigation and was fully cooperating. "Delta teams are working tirelessly to care for and make it right for customers impacted by delays and cancellations as we work to restore the reliable, on-time service they have come to expect from Delta," the airline said.

smooth wombat writes: The FTC has sent mandatory notices for information to eight companies it says engages in "surveillance pricing", the process by which prices are rapidly changed using AI based on data about customer behavior and characteristics. This process, the FTC claims, allows companies to charge different customers different prices for the same product.

The list includes Mastercard, JPMorgan Chase, Accenture and consulting giant McKinsey. It also includes software firm Task, which counts McDonald's and Starbucks as clients; Revionics, which works with Home Depot, Tractor Supply and grocery chain Hannaford; Bloomreach, which services FreshDirect, Total Wine and Puma; and Pros, which was named Microsoft's internet service vendor of the year this year. "Firms that harvest Americans' personal data can put people's privacy at risk," FTC Chair Lina Khan said in a news release. "Now firms could be exploiting this vast trove of personal information to charge people higher prices."

An anonymous reader quotes a report from SFGate: A group of tech billionaires and millionaires has pulled its ballot measure that aimed to build a utopian city in Solano County. Instead, the group will go back to the drawing board the old-fashioned way by submitting an application to the county. The surprise announcement was made Monday by California Forever, a group of investors planning a city of 400,000 people in an agricultural part of the Bay Area near Rio Vista. It recently received the requisite number of signatures to put its East Solano Plan on the November ballot; that measure, if passed, would have removed some zoning restrictions that prevent this type of development in the area.

California Forever will instead "submit an application for a General Plan & Zoning Amendment and proceed with the normal County process which includes preparation of a full Environmental Impact Report and the negotiation and execution of Development Agreement," Solano County Board of Supervisors Chair Mitch Mashburn said in a statement Monday. The news was celebrated by many in Solano County, where skepticism about the project ran deep. The group's secretive purchases of huge tracts of land first brought about national security fears, even from local politicians, who had no idea who was behind the project. When the plan to build a futuristic city was announced, California Forever faced widespread pushback, ranging from concerns about billionaire backers like Reid Hoffman and Laurene Powell Jobs to questions about the impacts on traffic, water usage and proximity to Travis Air Force Base. California Forever CEO Jan Sramek said in a statement: "We believe that with this process, we can build a shared vision that passes with a decisive majority and creates broad consensus for the future. We're excited about working with the Board of Supervisors, its land use subcommittee, and county staff to make this happen."

Rosemary Fowler, a pioneering physicist who discovered the kaon particle during her doctoral research in 1948, has been awarded an honorary doctorate from the University of Bristol -- 75 years after she left her PhD to raise a family. The Guardian reports: Rosemary Fowler, 98, discovered the kaon particle during her doctoral research under Cecil Powell at the University of Bristol in 1948, which contributed to his Nobel prize for physics in 1950. Fowler's discovery helped lead to a revolution in the theory of particle physics, and it continues to be proven correct -- predicting particles such as the Higgs boson, discovered at Cern in Geneva, Switzerland. But she left university without completing her PhD to marry fellow physicist Peter Fowler in 1949, a decision she later described as pragmatic after she went on to have three children in a time of postwar food rationing.

At 22, Fowler spotted something when viewing unusual particle tracks -- a particle that decayed into three pions, a type of subatomic particle. She said: "I knew at once that it was new and would be very important. We were seeing things that hadn't been seen before -- that's what research in particle physics was. It was very exciting." The track, later labelled K, was evidence of an unknown particle, now known as the kaon or K meson. The K track was the mirror image of a particle seen before by colleagues in Manchester, but their track decayed into two pions, not three. Trying to understand how these images were the same, yet behaved differently, helped lead to a revolution in the theory of particle physics. The year after the discovery, Fowler left university having published her discovery in three academic papers.

Something is pumping out large amounts of oxygen at the bottom of the Pacific Ocean, at depths where a total lack of sunlight makes photosynthesis impossible. Nature: The phenomenon was discovered in a region strewn with ancient, plum-sized formations called polymetallic nodules, which could play a part in the oxygen production by catalysing the splitting of water molecules, researchers suspect. The findings are published in Nature Geoscience. "We have another source of oxygen on the planet, other than photosynthesis," says study co-author Andrew Sweetman, a sea-floor ecologist at the Scottish Association for Marine Science in Oban, UK -- although the mechanism behind this oxygen production remains a mystery. The findings could also have implications for understanding how life began, he says, as well as for the possible impact of deep-sea mining in the region.

The observation is "fascinating," says Donald Canfield, a biogeochemist at the University of Southern Denmark in Odense. "But I find it frustrating, because it raises a lot of questions and not very many answers." Sweetman and his collaborators first noticed something amiss during field work in 2013. The researchers were studying sea-floor ecosystems in the Clarion-Clipperton Zone, an area between Hawaii and Mexico that is larger than India and a potential target for the mining of metal-rich nodules. During such expeditions, the team releases a module that sinks to the sea floor to perform automated experiments. Once there, the module drives cylindrical chambers down to close off small sections of the sea floor -- together with some seawater -- and create "an enclosed microcosm of the seafloor," the authors write. The lander then measures how the concentration of oxygen in the confined seawater changes over periods of up to several days.

Without any photosynthetic organisms releasing oxygen into the water, and with any other organisms consuming the gas, oxygen concentrations inside the chambers should slowly fall. Sweetman has seen that happen in studies he has conducted in areas of the Southern, Arctic and Indian oceans, and in the Atlantic. Around the world, sea-floor ecosystems owe their existence to oxygen carried by currents from the surface, and would quickly die if cut off. (Most of that oxygen originates in the North Atlantic and is carried to deep oceans around the world by a 'global conveyor belt.')

OpenResearch, a lab funded by OpenAI CEO Sam Altman, has released initial findings from a comprehensive study on unconditional cash transfers. The experiment, conducted from 2020 to 2023, provided $1,000 monthly to 1,000 low-income Americans across Illinois and Texas. Results showed recipients primarily used the funds for basic needs and increased spending on healthcare and leisure activities.

While the cash boost led to some positive outcomes, including increased business startups among Black recipients and women, it did not significantly improve long-term financial health or physical well-being. The study also noted a reduction in work hours among participants, with earnings dropping by at least 12 cents for every dollar received.

In April the U.S. Space Force began testing "a new ground-based satellite jamming weapon to help keep U.S. military personnel safe from potential 'space-enabled' attacks" (according to a report from Space.com). The weapon was "designed to deny, degrade, or disrupt communications with satellites overhead, typically through overloading specific portions of the electromagnetic spectrum with interference," according to the article, with the miitary describing it as a small form-factor system "designed to be fielded in large numbers at low-cost and operated remotely" and "provide counterspace electronic warfare capability to all of the new Space Force components globally."

And now, Bloomberg reports that the U.S. is about to deploy them: The devices aren't meant to protect U.S. satellites from Chinese or Russian jamming but "to responsibly counter adversary satellite communications capabilities that enable attacks," the Space Force said in a statement to Bloomberg News. The Pentagon strives — on the rare occasions when it discusses such space capabilities — to distinguish its emerging satellite-jamming technology as purely defensive and narrowly focused. That's as opposed to a nuclear weapon the U.S. says Russia is developing that could create high-altitude electromagnetic pulses that would take out satellites and disrupt entire communications networks.

The first 11 of 24 Remote Modular Terminal jammers will be deployed in several months, and all of them could be in place by Dec. 31 at undisclosed locations, according to the Space Force statement... The new terminals augment a much larger jamming weapon called the Counter Communications System that's already deployed and a mid-sized one called Meadowlands "by providing the ability to have a proliferated, remotely controlled and relatively relocatable capability," the Space Force said. The Meadowlands system has encountered technical challenges that have delayed its delivery until at least October, about two years later than planned.

China has "hundreds and hundreds of satellites on orbit designed to find, fix, track, target and yes, potentially engage, US and allied forces across the Indo-Pacific," General Stephen Whiting, head of US Space Command, said Wednesday at the annual Aspen Security Forum. "So we've got to understand that and know what it means for our forces."
Bloomberg also got this comment from the chief director of space security and stability at the Secure World Foundation (which produces reports on counterspace weapons). The new U.S. Space Force jamming weapons are "reversible, temporary, non-escalatory and allow for plausible deniability in terms of who the instigator is."

For the third straight day, "More than 1,000 US flights have been," reports CNN, "as airlines struggle to recover from a global tech outage that left thousands of passengers stranded at airports." More than 1,200 flights into, within or out of the United States were canceled by early Sunday afternoon, while more than 5,000 U.S. flights were delayed, according to the tracking website FlightAware.com... On Saturday, 2,136 US flights were canceled, and more than 21,300 flights were delayed...
USA Today notes that Friday several U.S. airlines issued ground stops (according to America's Federal Aviation Administration) "which caused a domino effect into Sunday."

They note that "most of the cancellations and delays Sunday are likely to be caused by airline crews and equipment being out of place."