Earlier this year, a relatively unknown startup from Finland made a startling announcement: It had finally solved solid-state batteries.
Technology
Is the ‘Holy Grail of batteries’ finally ready to bless us with its presence?
Not only that, but Donut Lab, a spinoff of Verge Motorcycles, said that its solid-state battery — long considered the “Holy Grail of batteries” for their high-density, durable, fast-charging abilities — would go into production later this year.
Battery experts were understandably skeptical. After all, solid-state batteries are one of those technologies, along with artificial general intelligence and the hyperloop, that seem perpetually two years away. And while most legitimate efforts in this field — whether academic or commercial — have some level of published research or recognizable names attached, Donut Lab seemed to have emerged out of nowhere, with no known researchers or prior presence in the field. This lack of traceability immediately raised concerns about the startup’s credibility.
“I can’t say they didn’t do it,” said Eric Wachsman, the director of the Maryland Energy Innovation Institute and an expert on solid-state batteries and solid oxide fuel cells. “All I can say is they haven’t demonstrated that they have.”
The skepticism seems warranted, especially when you consider how many other people have been chasing the solid-state dream. Were we really to believe this obscure startup had beaten Toyota, Stellantis, and the entire nation of China to the punch? The odds were against it.
Donut Lab seemed to anticipate the doubt, launching a website last February called idonutbelieve.com that would serve as a platform to publish independent tests verifying that, in fact, its solid-state battery was real, and spectacular. Over the course of several weeks, the startup posted third-party results from state-owned VTT Technical Research Centre of Finland that it said proved its battery was what it said it was: a fast-charging, high-energy-density solid-state battery that wasn’t actually a supercapacitor in disguise.
“The resistance won’t disappear when we present the proof,” Donut Lab CEO and cofounder Marko Lehtimäki said in a video. “It will just intensify because this new technology is a threat to the established players in the industry.”
But Donut Lab is still hiding the ball on some key information. At CES in January, the startup said its solid-state battery has an energy density of 400Wh per kilogram—roughly twice that of typical lithium iron phosphate (LFP) batteries in production. Not only that, but it could charge to full in five minutes, had a practically unlimited lifespan of 100,000 charging cycles, was unaffected by heat and cold (negative 30 degrees Celsius and 100C), and contains no rare earth elements, precious metals, or flammable liquid electrolytes.
Much of that remains unsubstantiated. Even after posting five independent test reports from VTT, the startup has yet to demonstrate three of the most important metrics: chemistry, density, and cycle-life claims.
The stakes are incredibly high. Imagine an electric vehicle that can travel 700–800 miles on a single charge, and that wasn’t at risk of bursting into flames because the flammable electrolytes had been replaced with a solid material.
In lithium-ion batteries, the motion of the liquid electrolytes generates heat, and in certain situations, this can slip into a “thermal runaway” effect that results in a fire. By comparison, solid-state batteries would make it safer to quickly draw power from (or add it back to) the battery, meaning you could theoretically charge an EV faster. It also could mean, structurally, less room has to be devoted to temperature control, which could allow companies to squeeze more battery cells into the same size pack.
After reviewing the tests of the Donut battery, Wachsman said there are still significant concerns. During the extreme heat tests, for example, the pouch surrounding Donut’s battery lost its vacuum seal. Gas generation inside batteries — caused by processes like electrolyte decomposition or oxygen release — can lead to swelling and rupture of the battery pouch. But without knowing the exact chemistry of the cell, it’s difficult to say how significant it is that Donut’s battery had this failure.
Setting aside the Donut battery for a moment, solid-state batteries have struggled to graduate from the laboratory to the assembly line because of well-documented problems. These batteries are often plagued by the formation of metallic cracks called dendrites that cause them to short circuit. Think of them like cracks that form on a sidewalk when a tree root grows underneath.
Dendrites have been a thorn in the side of battery developers since the 1970s. One reason lithium-ion batteries have become ubiquitous while other approaches have stalled is that their commonly used graphite anodes are less susceptible to dendrite formation.
But new discoveries could help engineers finally overcome these hurdles. A research team from MIT recently published a study in Nature that found that chemical reactions caused by high electrical currents that weaken the electrolyte also make it more susceptible to dendrite growth. That’s why developing stronger electrolytes alone hasn’t solved the decades-old dendrite problem. And it could point to the importance of developing more chemically stable materials to finally fulfill the promise of solid-state batteries.
Progress is already being made — where else? — in China. Last month, CATL, which controls nearly 40 percent of the global battery market, filed a patent application for solid-state batteries with a reported 500Wh energy density. According to CarNewsChina, the battery maker has already been planning small-scale production in 2027. But automotive-grade cells won’t be ready likely until the end of the decade.
Other Chinese companies are rushing ahead. Automaker FAW said recently that its “liquid-solid-state” lithium-rich manganese cell with 500Wh/kg was ready for vehicle integration.
China is already laying the groundwork for mass production by the end of the decade, by which point it hopes the technology will be mature. And why wouldn’t it? This is a country that has taken EVs and battery development seriously for years, allowing it to corner the market on much of the world’s supply.
Different companies are taking different approaches. For example, Honda is committed to sulfur-based electrolytes despite emerging alternatives. Last October, Toyota announced “the world’s first practical use of all-solid-state batteries in BEVs” by 2027 or 2028. And Mercedes, using a prototype battery from startup Factorial, was able to get an electric EQS sedan a real-world range of 749 miles.
“The companies probably have a ways to go,” said Alevtina Smirnova, director of the NSF Industry-University Cooperative Research Center for Solid-State Electric Power Storage. “Because there is no comparison to what is happening now in China to what is happening here in the US.”
For its part, Donut Lab is unperturbed by the skepticism around its claims. On April 1st, Lehtimäki posted a new video addressing some of the controversy surrounding its solid-state batteries. He also revealed that Donut Lab had created a second, more production-ready version of its battery that would start shipping to customers later this year.
There was a crucial admission: The widely discussed “100,000 cycles” figure was a design target, he said, not an experimentally verified result. Actual testing has been conducted over shorter cycles, with projections extrapolated based on known variables such as charge rate, temperature, and usage conditions.
He then pivoted to a more near-term project: Donut Lab’s latest merch drop, including a “tin-foil”-covered bucket hat.
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Meta might be the next company to make an always-on AI wearable. The company is working on prototype “super sensing” always-aware smart glasses that could continuously record audio and snap photos “every few seconds,” according to the Financial Times. The wearer could then ask Meta AI about the captured audio and images.
However, the images and audio might not be directly available to the user. Here’s how the FT describes one way the glasses could use the data:
In one proposed system, raw footage and audio would not be stored by Meta or made available to the user, several people said. Instead, the metadata from that audio and images would be extracted and uploaded to the server for Meta’s AI to query, which proponents argue would have fewer privacy implications.
But currently, Meta is planning for the LED recording indicator to remain off in “super sensing” mode, the FT reports. In a July 2025 whitepaper, the company said that it would reserve the LED indicator for “active capture” scenarios where the user is saving photos or videos, and leave it off during “AI Feature” use — such as scanning a menu — to avoid users becoming too used to the indicator. (If the indicator was on during the “super sensing” mode, it might also be harder to know when the glasses are actually recording video.)
Meta is also discussing if it would use the captured data for training its AI models. It may also bring the “super sensing” features to glasses it has already released, the FT says.
“While we don’t comment on internal prototypes, we’re committed to getting our glasses right because they need to be loved by both people wearing them and those around them,” Meta spokesperson Dave Arnold says in a statement to The Verge. Arnold also notes that “Our approach has been to develop new technologies that will help people throughout their day, with privacy built in from the ground up.”
Meta hasn’t been shy about some type of always-aware glasses being a possibility. CEO Mark Zuckerberg, in the company’s Q1 2026 earnings call, said that he was “really excited to see the glasses evolve from being able to answer questions to being able to be a personal agent that’s with you all day long, helping you remember things and achieve your goals.” In a March blog post about new Ray-Ban Meta glasses, the company wrote that “with ongoing software updates, Meta AI on glasses will transition from something you have to prompt with a question each time, to a more continuous, in-the-moment assistant that can help throughout the day.”
Even though they haven’t been officially announced yet, Samsung is giving you a chance to save some cash when you preorder what we’re expecting to be the brand’s updated Galaxy Z Fold phones. The next Galaxy Unpacked event will take place on July 22nd, 2026, and features the tagline “A new shape unfolds.” In addition to seeing updated versions of the existing Flip and Fold form factors, we anticipate the debut of a new, wider foldable phone. If you register your interest ahead of time and end up preordering one of the new phones shortly after they’re announced, Samsung will give you a $30 store credit at checkout.
There are some caveats to this offer. You have to use the credit when you preorder the phone. No saving it for later. Also, the credit can’t be applied to the cost of the phone either, so you’ll have to put it towards the cost of accessories or extra services. Samsung specifically calls out that select Galaxy rings, earbuds, watches, and tablets are eligible, or you can use it to help pay for Samsung Care Plus.
There are no downsides to registering your interest, so if you think you might be interested in buying one of the upcoming phones, it’s worth filling out the form. As long as you use the same email during checkout, the credit will be automatically applied.
Anthropic’s new AI model raises alarms over safety, cybersecurity concerns
Matt Shumer, co-founder and CEO of OthersideAI, details Anthropic’s new AI model, Mythos, on ‘The Sunday Briefing’. The model’s “emergent capabilities” to find software vulnerabilities autonomously raised alarms, prompting Anthropic to restrict public access. Shumer explains the proactive move of granting major companies and the US government early access to Mythos for cyber defense, anticipating future threats to critical infrastructure and national security.
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A security update rarely feels dramatic. You see the alert, promise yourself you will install it later and then go right back to whatever you were doing. This time, Apple is giving you a stronger reason to pay attention.
Apple released iOS 26.5.2, iPadOS 26.5.2 and macOS Tahoe 26.5.2 on June 29, 2026. The updates include security fixes for vulnerabilities tied to the kernel, WebKit and WebRTC. Apple says these fixes were first made available through the iOS 26.6, iPadOS 26.6 and macOS Tahoe 26.6 betas before being pushed out early to everyone.
That is the part that should make you pause. Apple usually rolls many security fixes into larger software updates. This time, the company moved faster.
AI IS NOW POWERING CYBERATTACKS, MICROSOFT WARNS
Apple pushed out security fixes early because AI can help hackers study software flaws faster. (Nikolas Kokovlis/NurPhoto via Getty Images)
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Why Apple released this AI security update early
Apple reportedly accelerated the updates because artificial intelligence can help speed the creation of malicious hacking tools. Once a fix appears in a beta, attackers may be able to study it, reverse-engineer the weakness and move faster than before.
Apple said there was no evidence that the newly patched vulnerabilities had been exploited. Still, the company wanted to shrink the time between when fixes were first visible and when they reached your devices.
That is a major shift. It suggests Apple sees AI as a force that changes the timing of security. A flaw that once gave defenders more breathing room may now become a race.
What Apple fixed in iOS 26.5.2
Apple’s iOS 26.5.2 and iPadOS 26.5.2 notes list fixes for iPhone 11 and later, along with several supported iPad models. The security content includes kernel vulnerabilities that could let an app crash the system, corrupt kernel memory or leak sensitive kernel state.
The update also fixes multiple WebKit issues. WebKit powers Safari and web content inside many apps. Some of these flaws involved malicious web content that could lead to crashes, memory corruption, data leaks or sandbox escapes.
Apple also fixed WebRTC issues that could be triggered by malicious web content and lead to Safari or process crashes.
For Mac, Apple lists macOS Tahoe 26.5.2 as the current release. If your Mac runs macOS Sonoma or macOS Sequoia, Apple also lists Safari 26.5.2 as a June 29, 2026, security release.
A woman uses a smartphone outside an Apple Store on June 20, 2026, in Shenzhen, Guangdong Province, China. (Cheng Xin/Getty Images)
Why AI hacking tools change the security race
AI can help legitimate researchers find bugs faster. That is good when the work leads to stronger software and responsible disclosure. However, the same general capability can also help bad actors move faster. A criminal does not need to understand every line of code if an AI tool can help summarize a patch, compare software changes or suggest where a weakness may be hiding.
That is why Apple’s move is important. It shows that big tech companies may need to release security fixes sooner and more often, even when those updates do not include flashy new features. The wider AI world adds pressure here. Frontier AI companies have released or tested systems with stronger coding and cybersecurity capabilities. Some models are available only through limited previews, approved access or extra safeguards because of their potential cyber use.
Similar efforts are also emerging outside the United States. Several international AI labs and security companies now promote models designed to find vulnerabilities, analyze code and assist cyber defense. The takeaway for you isn’t that AI is automatically bad. The real point is speed. Security teams, attackers and AI tools are now moving on a shorter clock.
How to update your iPhone or iPad
Before you update, plug in your device and connect to Wi-Fi. You may also want to back up your iPhone or iPad first.
Then do this: Open Settings > General > Software Update > Download and Install.
After the update finishes, go back to Settings > General > Software Update > Automatic Updates. Make sure automatic updates are turned on. Apple also lets your device automatically install system file updates that improve security without changing the full software version. If you do not see the update right away, check again later. Apple releases updates in stages, and your device also needs enough battery and storage.
How to update your Mac
On a Mac, start with a backup. Then click the Apple menu > System Settings > General > Software Update . Choose Update Now if macOS Tahoe 26.5.2 appears.
Next, check your background update settings. On macOS Tahoe 26 or later, go to Apple menu > System Settings > General > Software Update . Click the More Info button next to Automatic Updates and make sure Install system data files and security updates is turned on.
If your Mac runs Sonoma or Sequoia, look for Safari 26.5.2 in Software Update as well. That Safari update may be the protection your Mac needs if you are not on Tahoe.
BEWARE OF HACKERS SHOWING UP PRETENDING TO BE IT
What this Apple security update means to you
You may see more security updates that feel sudden or small. That can be annoying, especially when you are busy or your device needs to restart.
Still, these updates are becoming more important. Apple is reacting to a world where AI can help shorten the time between a public fix and a possible attack.
So, when your iPhone, iPad or Mac asks you to update, do not treat it like background noise. The update may be closing a door someone else is already trying to find.
Updating your iPhone, iPad and Mac helps close security holes before attackers get more time to exploit them. (Katharina Kausche/picture alliance via Getty Images)
How to stay safe after the Apple security update
Installing the Apple AI security update is the best first move. After that, tighten a few habits that make attacks harder.
1) Keep your apps updated
Your operating system is only part of the security picture. Outdated apps can still create risk, especially if they handle messages, web links, photos, files or account logins. Open the App Store and install available updates regularly.
2) Watch out for suspicious links
Be careful with links in texts, emails and social media messages. WebKit and browser flaws are a reminder that malicious web content can be part of an attack. When in doubt, open the official app or website yourself instead of tapping a link.
3) Use strong passwords and two-factor authentication
Use strong, unique passwords for every account and store them in a password manager. Then turn on two-factor authentication (2FA) wherever possible. If one password gets exposed, you do not want it opening the door to your email, bank or Apple account.
4) Use strong antivirus protection
Use strong antivirus protection on your Mac and other connected devices. It can help catch malicious files, phishing attempts and suspicious activity before they do damage. Get my picks for the best 2026 antivirus protection winners for your Windows, Mac, Android and iOS devices at CyberGuy.com.
5) Back up your data regularly
Back up your iPhone, iPad and Mac before problems hit. A recent backup can help you recover faster if an update fails, your device gets stolen or malware locks you out of important files. CyberGuy’s guide to backing up your devices walks you through ways to protect your files using cloud storage, an external drive or both.
6) Use a personal data removal service
Use a personal data removal service to reduce how much of your personal information is floating around online. Data brokers and people-search sites can expose your name, address, phone number and relatives. Scammers can use those details to make phishing messages feel more believable. Check out my top picks for data removal services and get a free scan to find out if your personal information is already out on the web by visiting CyberGuy.com.
Kurt’s key takeaways
Apple’s early security release shows how fast the cyber threat landscape is changing. The company says there is no evidence these newly patched flaws were exploited, but it still moved the fixes out before the wider 26.6 release. That tells me the old habit of waiting weeks to update is getting riskier. AI can help defenders, but it can also help criminals study weaknesses faster. My advice is direct: update your Apple devices now, turn on automatic security updates and stop putting off patches that protect the phone and computer you use every day.
Do you think AI will make your devices safer because companies can find flaws faster, or more vulnerable because hackers can move faster too? Let us know by writing to us at CyberGuy.com.
Automatic updates, strong passwords and a personal data removal service can make you a harder target after the update. (Silas Stein/picture alliance via Getty Images)
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