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OPINION Cal.com has closed its commercial codebase, abandoning years of AGPL-3.0 licensing in a move that has alarmed the developer community that helped build it and sent ripples through the broader open source world. "Open source is dead," says Cal.com co-founder and CEO Bailey Pumfleet. But my conversations with top open source developers such as Linux kernel maintainer Greg Kroah-Hartman suggest it is not. And I really don't think it is. Punfleet made this declaration because the company is moving its main program from the GNU Affero General Public License (AGPL) to a proprietary license, as he sees AI as too much of a threat to the program's security. Or, as he told me, "AI attackers are flaunting that transparency," so "Open source code is basically like handing out the blueprint to a bank vault. And now there are 100× more hackers studying the blueprint." If that sounds familiar, it should. It's an ancient argument that letting people read your code automatically makes it more vulnerable. It wasn't true in the '90s; it's not true now. Consider, if you will, that almost all commercial code today is open source. If anything, open source has proven to be far more secure than proprietary code over the years.  Now it is true that AI makes finding security holes easier and faster than ever. In particular, everyone's nervous these days that the Anthropic Mythos Preview will drown the maintainers of smaller open-source projects in a flood of bug reports.  It's also true that some security reports, such as Black Duck's 2026 Open Source Security and Risk Analysis (OSSRA) paper, claim there's been a 107 percent surge in open source vulnerabilities per codebase. Indeed, lending support to Pumfleet's argument, Jason Schmitt, Black Duck's CEO, claims, "The pace at which software is created now exceeds the pace at which most organizations can secure it." On the other hand, with AI, we can also hope to patch newly discovered security holes as they're found. Cal, clearly, doesn't want to take that chance. Or, perhaps, as he indicated, Pumfleet feels the company can't afford it.  For, as Drew Breunig, a well-regarded tech strategist, argued in a recent blog post, code security has now come to "a brutally simple equation: to harden a system you need to spend more tokens discovering exploits than attackers will spend exploiting them." In a way, this is a restating of Linus's Law. Today, instead of "given enough eyeballs, all bugs are shallow," perhaps it should be restated as "given enough tokens, all bugs are shallow." That presumes, of course, that you can afford enough tokens to stay ahead of your attackers.  Simon Willison, Django co-creator, however, argues, "Since security exploits can now be found by spending tokens, open source is MORE valuable because open source libraries can share that auditing budget while closed source software has to find all the exploits themselves in private." Needless to say, some would-be competitors are making hay about Cal's sudden policy shift. Ryan Sipes, Mozilla Thunderbird Product & Business Development Manager, said on YComb: "Our scheduling tool, Thunderbird Appointment, will always be open source. Come talk to us and build with us. We'll help you replace Cal.com." By and large, though, the developer community isn't buying Cal's story. On Reddit, one person wondered how serious Cal has ever been about security. Citing several recent patches for security holes, he commented, "These problems were not the result of sophisticated hacking; they stemmed from fundamental oversights in authentication and access control." One cynical comment in Slashdot stated, "If the tools are so good that you are afraid they will be used to expose your security flaws... maybe you should use the tools to find the security flaws yourself, and then fix them rather than declaring security through obscurity. This is a fig leaf over the desire to back out of the open-source community now that the product has reached profitability." Thinking of security by obscurity, Peter Steinberger, creator of OpenClaw, tweeted, "If you look at GPT 5.4-Cyber and its ability for closed source reverse engineering, I have bad news for you." In case you haven't looked at GPT 5.4-Cyber yet, OpenAI's answer for Mythos, OpenAI claims it can reverse engineer binaries to source code. If it can deliver on that promise, you can kiss the always bogus "security by obscurity" argument goodbye for good. We'll finally get to see what's really inside Windows – and won't that be fun!. And, oh yes, dropping open source to improve your security will stop being a thing.  Mind you, to date, no other companies or projects have followed Cal's relicensing footsteps. I doubt any will.  Yes, AI is radically changing open source programming. I don't pretend to understand what open source coding will look like by this time next year. AI's transformation of programming is too broad for me to even make an educated guess. What I can say, though, is that we'll be better off learning how to use AI and open source together rather than retreating into old, discredited proprietary licensing models. ®

Cal.com considers AGPL a license to drill, but not everyone feels that way

Opinion  Cal.com has closed its commercial codebase, abandoning years of AGPL-3.0 licensing in a move that has alarmed the developer community that helped build it and sent ripples through the broader open source world.…

Pořádných pirátských her je žalostně málo. Podobně jako u kovbojek jde o oblíbené téma, které by si zasloužilo mnohem větší využití. Přece jen ale existuje řada her, ve kterých můžete svobodně brázdit rozsáhlá moře, a právě na ně se dnes podíváme.

Laserové systémy se stále častěji prosazují v obraně proti malým a levným dronům. Americké námořnictvo proto nedávno provedlo vůbec první ostré střelby z podobné zbraně na palubě letadlové lodi – konkrétně na USS George H.W. Bush (CVN-77). Doposud k těmto zkouškám na moři sloužila výlučně ...

Na ČVUT startuje Národní centrum umělé inteligence. HP představuje novou generaci výkonných firemních počítačů. NIS2 mění pravidla hry v energetice. Norton spouští ochranu autonomních AI agentů. Jak umělá inteligence změní testování softwaru. Cloudové úlohy se mají přesouvat na suverénní infrastrukturu.

Společnost HD Hyundai Heavy Industries vstupují do džungle digitální energetiky. Amerických datovým centrům pošlou masivní čtyřtaktní motory HiMSEN na naftu nebo zemní plyn, které mají výkon kolem 20 MW. Doposud poháněly lodě a elektrárny, teď budou pohánět i umělou inteligenci.

Týden v KDE a zejména opravy pro Plasmu 6.6.5, týden v GNOME a libadwaita pro Android. Fwupd 2.1.2 s podporou dalšího hardwaru, GCC zřizuje pracovní skupinu pro posouzení politiky kolem AI/LLM.

Ještě před několika lety jsme bezpečnost vnímali především jako reakci na incident: narušení – poplach – zásah. Dnes se ale díky digitalizaci a AI posouváme do zcela jiné fáze. Bezpečnost je více proaktivní, řízená daty a spojená s provozem objektů. Jedním z klíčových trendů je využití AI a ...

Ještě před několika lety jsme bezpečnost vnímali především jako reakci na incident: narušení – poplach – zásah. Dnes se ale díky digitalizaci a AI posouváme do zcela jiné fáze. Bezpečnost je více proaktivní, řízená daty a spojená s provozem objektů. Jedním z klíčových trendů je využití AI a ...

Microsoft says it's rolling out a revamped Windows Insider Program experience as part of the broader plans to address performance and reliability concerns affecting Windows 11. [...]

Future

The People Do Not Yearn for AutomationNilay Patel | The Verge

“Not everything about our lives can be measured and automated and optimized, and it shouldn’t be. And so the tech industry is rushing forward to put AI everywhere at enormous cost—energy, emissions, manufacturing capacity, the ability to buy RAM—and locked into the narrow framework of software brain without realizing they are also asking people to be fundamentally less human.”

BIOTECHNOLOGY

AI-Designed Drugs by a DeepMind Spinoff Are Headed to Human Trials
Emily Mullin | Wired ($)

“In a technical paper [released earlier this year], the company touts that the [new IsoDDE] platform more than doubles the accuracy of AlphaFold 3. The startup has formed partnerships with Eli Lilly and Novartis to work together on AI drug discovery and is also advancing its own ‘broad and exciting pipeline of new medicines’ in oncology and immunology, Jaderberg said.”

Computing

We Might Finally Know How to Use Quantum Computers to Boost AIKarmela Padavic-Callaghan | New Scientist ($)

“They showed not only that this approach can work but that it would allow the quantum computer to process more data at a smaller memory cost than any conventional computer. The memory advantage is so large, in fact, that a quantum computer made from about 300 error-proof building blocks called logical qubits would outperform a classical computer built using every atom in the observable universe, says Zhao.”

Future

New Gas-Powered Data Centers Could Emit More Greenhouse Gases Than Entire NationsMolly Taft | Wired ($)

“A Wired review of permits for data center projects using natural gas and linked to OpenAI, Meta, Microsoft, and xAI shows they could emit more than 129 million tons of greenhouse gases per year. …As tech companies race to secure massive power deals to build out hundreds of data centers across the country, these projects represent just the tip of the iceberg when it comes to the potential climate cost of the AI boom.”

TECH

Anthropic Has Surged to a Trillion-Dollar Valuation on Secondary Markets, Overtaking OpenAIBen Bergman | Business Insider

“Desperate buyers are in a race to secure a dwindling supply of secondary shares in Anthropic, driving the AI company’s valuation on some sites to $1 trillion, a price that would have seemed unthinkable even a few weeks ago. Meanwhile, traders Business Insider spoke with are seeing slumping demand for OpenAI, which is now trading at a discount to Anthropic, despite OpenAI being valued at $852 billion, more than twice Anthropic’s valuation in their most recent funding rounds.”

TECH

You’re About to Feel the AI Money SqueezeHayden Field | The Verge

“Ads, rate limits, feature restrictions, price hikes. The AI free ride is over. …To reach that bare minimum of 7 percent [return on invested capital], Gartner forecasts that large AI companies would need to earn cumulatively close to $7 trillion in AI-driven revenue through 2029, which is close to $2 trillion per year by the end of the period.”

Future

BMW Is One Step Closer to Selling You a Color-Changing CarAndrew Liszewski | The Verge

“The new BMW iX3 Flow Edition is potentially the most exciting of all of BMW’s concepts as it embeds the E Ink Prism technology directly into the structure of the vehicle’s hood panel, instead of just slapping it on top. The new approach has ‘undergone BMW’s stringent quality testing’ so that it meets the ‘requirements of automotive engineering and everyday use,’ according to a release from E Ink.”

Biotechnology

The FDA Gives the Green Light to the First Gene Therapy for DeafnessRob Stein | NPR

“‘That was like the most surreal moment a mother can feel when your son first hears your voice,’ [said Sierra Smith]. The treatment [Smith’s son] received was the one just approved by the FDA. …The FDA’s decision was based on the results from the treatment of 20 patients born with a defective version of a gene known as OTOF, which is necessary to transmit sound from the ears to the brain.”

Energy

Will Fusion Power Get Cheap? Don’t Count On It.Casey Crownhart | MIT Technology Review ($)

“Technologies tend to get less expensive over time. Lithium-ion batteries are now about 90% cheaper than they were in 2013. But historically, different technologies tend to go through this curve at different rates. And the cost of fusion might not sink as quickly as the prices of batteries or solar.”

Biotechnology

A Startup Says It Grew Human Sperm in a Lab—and Used It to Make EmbryosEmily Mullin | Wired ($)

“The process involves isolating sperm-making stem cells from testicular tissue and coaxing the cells into becoming fully-fledged sperm in a dish. Scientists have been attempting to produce sperm outside the body, known as in vitro spermatogenesis, for almost a century. A Japanese team was the first to produce viable mouse sperm in the lab in 2011, but making human sperm has turned out to be a more difficult task.”

Artificial Intelligence

Are OpenAI and Anthropic Moving Away From Reasoning Tech?Stephanie Palazzolo | The Information ($)

“Early signs point to both Spud and Mythos being more intelligent pretrained models, meaning they got smart during the initial part of the development process. Now, OpenAI’s upcoming Spud model is noticeably better at answering tough questions without relying on reasoning, said two people familiar with it.”

Future

Only Antimatter Provides the Energy We Need for Interstellar TravelEthan Siegel | Big Think

“If our goal is to eventually extend our reach not just to the other worlds of our Solar System, but to exoplanets around other stars, we’ll need a different, more efficient method of propulsion than chemical-based rockets can supply. The most efficient form of energy generation, theoretically, is to reach 100%, and only one fuel is capable of doing that: matter-antimatter annihilation. Here’s why that’s the ultimate dream, and how we might conceivably get there.”

Biotechnology

If a Bird Flu Pandemic Starts, We May Have an MRNA Vaccine ReadyMichael Le Page | New Scientist ($)

“It was roughly a year after the earliest cases of covid-19 before the first vaccines against the SARS-CoV-2 virus were ready for roll-out. By then millions had died worldwide and economies were devastated. In the advent of a bird flu pandemic, we will be able to react more rapidly, because we should have an mRNA vaccine already approved and ready to go. A phase III trial of a such a vaccine is now getting under way in the UK and the US.”

The post This Week’s Awesome Tech Stories From Around the Web (Through April 25) appeared first on SingularityHub.

Firma TerraPower zahájila ve Wyomingu výstavbu jaderného reaktoru Natrium • Zařízení využívá tekutý sodík a díky roztaveným solím flexibilně navyšuje výkon • Stabilní bezemisní zdroj pomůže pokrýt spotřebu velkých datových center

A threat group tracked as UNC6692 uses social engineering to deploy a new, custom malware suite named 'Snow' which includes a browser extension, a tunneler, and a backdoor. [...]

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When setting up network security systems, it is critical to ensure they work correctly and do not have flaws waiting to be exploited.

Všimli jste si? Už bylo 1. dubna a Tesla nepředstavila produkční verzi Roadsteru. Ale to je v pořádku, protože Elon Musk už před termínem řekl, že dojde k odkladu. Mělo to být koncem dubna. Ale ani to nebude pravda. Když Tesla ve čtvrtek oznámila kvartální hospodářské výsledky, přišla řeč i na ...