One of the most frequently asked questions about quantum computers is a simple one: When will they be useful?

If you talk to people in the field, you'll generally get a response in the form of another question: useful for what? Quantum computing can be applied to a large range of problems, some of them considerably more complex than others. Utility will come for some of the simpler problems first, but further hardware progress is needed before we can begin tackling some of the more complex ones.

One that should be easiest to solve involves modeling the behavior of some simple catalysts. The electrons of these catalysts, which are critical for their chemical activity, obey the rules of quantum mechanics, which makes it relatively easy to explore them with a quantum computer.

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About a year ago, security researcher Sam Curry bought his mother a Subaru, on the condition that, at some point in the near future, she let him hack it.

It took Curry until last November, when he was home for Thanksgiving, to begin examining the 2023 Impreza's Internet-connected features and start looking for ways to exploit them. Sure enough, he and a researcher working with him online, Shubham Shah, soon discovered vulnerabilities in a Subaru web portal that let them hijack the ability to unlock the car, honk its horn, and start its ignition, reassigning control of those features to any phone or computer they chose.

Most disturbing for Curry, though, was that they found they could also track the Subaru's location—not merely where it was at the moment but also where it had been for the entire year that his mother had owned it. The map of the car’s whereabouts was so accurate and detailed, Curry says, that he was able to see her doctor visits, the homes of the friends she visited, even which exact parking space his mother parked in every time she went to church.

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Welcome to Edition 7.28 of the Rocket Report! After last week's jam-packed action in the launch business, things are a bit quieter this week. Much of the space world's attention has turned to Washington as the Trump administration takes the helm of the federal government. Some of the administration's policy changes will likely impact the launch industry, with commercial spaceflight poised to become a beneficiary of actions over the next four years. As for the specifics, Ars has reported that NASA is expected to review the future of the Space Launch System rocket. Investments in the military space program could bring in more business for launch companies. And regulatory changes may reduce government oversight of commercial spaceflight.

As always, we welcome reader submissions . If you don't want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

What happened to China's reusable rocket testbed? A Chinese state-owned company performed a rocket flight on January 18 (US time) aimed at testing reusable launch vehicle technology without announcing the outcome, Space News reports . The Longxing-2 test article lifted off from a makeshift launch area near Haiyang, Shandong province. The methane-fueled rocket was expected to fly to an altitude of 75 kilometers (about 246,000 feet) before performing a reentry burn and a landing burn to guide itself to a controlled splashdown in the Yellow Sea, replicating the maneuvers required to recover a reusable booster like the first stage of SpaceX's Falcon 9. This was China's most ambitious reusable rocket demonstration flight to date.

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When threat actors use backdoor malware to gain access to a network, they want to make sure all their hard work can’t be leveraged by competing groups or detected by defenders. One countermeasure is to equip the backdoor with a passive agent that remains dormant until it receives what’s known in the business as a “magic packet.” On Thursday, researchers revealed that a never-before-seen backdoor that quietly took hold of dozens of enterprise VPNs running Juniper Network’s Junos OS has been doing just that.

J-Magic, the tracking name for the backdoor, goes one step further to prevent unauthorized access. After receiving a magic packet hidden in the normal flow of TCP traffic, it relays a challenge to the device that sent it. The challenge comes in the form of a string of text that’s encrypted using the public portion of an RSA key. The initiating party must then respond with the corresponding plaintext, proving it has access to the secret key.

Open sesame

The lightweight backdoor is also notable because it resided only in memory, a trait that makes detection harder for defenders. The combination prompted researchers at Lumin Technology’s Black Lotus Lab to sit up and take notice.

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Four out of five game developers are currently working on a project for the PC, a sizable increase from 66 percent of developers a year ago. That's according to Informa's latest State of the Game Industry survey , which partnered with Omdia to ask over 3,000 game industry professionals about their work in advance of March's Game Developers Conference.

The 80 percent of developers working on PC projects in this year's survey is by far the highest mark for any platform dating back to at least 2018, when 60 percent of surveyed developers were working on a PC game. In the years since, the ratio of game developers working on the PC has hovered between 56 and 66 percent before this year's unexpected jump. The number of game developers saying they were interested in the PC as a platform also increased substantially, from 62 percent last year to 74 percent this year.

While the PC has long been the most popular platform in this survey, the sudden jump in the last year was rather large. Credit: Kyle Orland / Informa

The PC has long been the most popular platform for developers to work on in the annual State of the Game Industry survey, easily outpacing consoles and mobile platforms that generally see active work from anywhere between 12 to 36 percent of developer respondents, depending on the year. In its report, Informa notes this surge as a "passion for PC development explod[ing]" among developers, and mentions that while "PC has consistently been the platform of choice... this year saw its dominance increase even more."

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On Thursday, OpenAI released a research preview of " Operator ," a web automation tool that uses a new AI model called Computer-Using Agent (CUA) to control computers through a visual interface. The system performs tasks by viewing and interacting with on-screen elements like buttons and text fields similar to how a human would.

Operator is available today for subscribers of the $200 per month ChatGPT Pro plan at operator.chatgpt.com . The company plans to expand to Plus, Team, and Enterprise users later. OpenAI intends to integrate these capabilities directly into ChatGPT and later release CUA through its API for developers.

Operator watches on-screen content while you use your computer and executes tasks through simulated keyboard and mouse inputs. The Computer-Using Agent processes screenshots to understand the computer's state and then makes decisions about clicking, typing, and scrolling based on its observations.

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All federal agencies received a memo Wednesday requiring the termination of remote work options, with return-to-office plans due by end of day Friday.

In the memo, the acting director of the Office of Personnel Management, Charles Ezell, told the heads and acting heads of all departments and agencies that the change is due to Donald Trump's Return to In-Person Work presidential memorandum, which carved out space for some exemptions and ordered:

Heads of all departments and agencies in the executive branch of Government shall, as soon as practicable, take all necessary steps to terminate remote work arrangements and require employees to return to work in-person at their respective duty stations on a full-time basis, provided that the department and agency heads shall make exemptions they deem necessary.

Empty offices a “national embarrassment”

According to the memo, "most federal offices presently are virtually abandoned," with "the vast majority of federal office workers" having "not returned to in-person work" after transitioning to remote work during the height of the COVID-19 pandemic. Not only has this "devastated" the local economy in Washington, D.C., the memo said, but having so many federal offices sitting empty also serves as a "national embarrassment."

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TikTok owner ByteDance is reportedly still searching for non-sale options to stay in the US after the Supreme Court upheld a national security law requiring that TikTok's US operations either be shut down or sold to a non-foreign adversary.

Last weekend, TikTok briefly went dark in the US, only to come back online hours later after Donald Trump reassured ByteDance that the US law would not be enforced. Then, shortly after Trump took office, he signed an executive order delaying enforcement for 75 days while he consulted with advisers to "pursue a resolution that protects national security while saving a platform used by 170 million Americans."

Trump's executive order did not suggest that he intended to attempt to override the national security law's ban-or-sale requirements. But that hasn't stopped ByteDance, board member Bill Ford told World Economic Forum (WEF) attendees, from searching for a potential non-sale option that "could involve a change of control locally to ensure it complies with US legislation," Bloomberg reported .

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The modern Doom games have been a master class in reviving a beloved retro gaming series. Both 2016's Doom and 2020's Doom Eternal paid homage to both the look and feel of the original Doom titles without being slavishly devoted to older gameplay conventions that can feel dated decades later.

Yet by the end of Doom Eternal , you could feel the modernized gameplay system threatening to burst at the seams a bit. Managing your limited ammo, health, and armor resources in Eternal meant expertly juggling a bewildering array of chainsaws, flamethrowers, grenades, and melee-based staggers into powerful, pre-animated "glory kills." That was all on top of the frequent weapon-switching needed to take advantage of the weaknesses of the varied enemies surrounding you and the double-jump-and-dash movement system that required expert use of all three dimensions.

Something had to give. So for Doom: The Dark Ages , the team at id Software has committed to a more streamlined, back-to-basics system that limits complexity while maintaining the same overall difficulty level. That means a "fewer strings on the guitar" approach to controls that narrows almost every action down to just three context-sensitive buttons, as the developers discussed in a hands-off virtual preview session attended by Ars Technica.

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