Prompt injection poses a serious threat to the reliability and safety of LLM agents. Recent defenses against prompt injection, such as Instruction Hierarchy and SecAlign, have shown notable robustness against static attacks. However, to more thoroughly evaluate the robustness of these defenses, it is arguably necessary to employ strong attacks such as automated red-teaming. To this end, we introduce RL-Hammer, a simple recipe for training attacker models that automatically learn to perform strong prompt injections and jailbreaks via reinforcement learning. RL-Hammer requires no warm-up data and can be trained entirely from scratch. To achieve high ASRs against industrial-level models with defenses, we propose a set of practical techniques that enable highly effective, universal attacks. Using this pipeline, RL-Hammer reaches a 98% ASR against GPT -4o and a 72% ASR against GPT -5 with the Instruction Hierarchy defense. We further discuss the challenge of achieving high diversity in attacks, highlighting how attacker models tend to "reward-hack" diversity objectives. Finally, we show that RL-Hammer can evade multiple prompt injection detectors. We hope our work advances automatic red-teaming and motivates the development of stronger, more principled defenses. More recently, a new paradigm has emerged that allows LLMs to behave as autonomous agents in complex environments, including full-fledged operating systems, integrated software platforms, and multi-step tool pipelines. In these contexts, LLMs can function as coding assistants, system administrators, and even academic researchers. Notable examples include Microsoft Copilot (GitHub, 2025), Anthropic Claude Computer Use (Anthropic, 2024), OpenAI Operator (OpenAI, 2025), and Zochi (Intology, 2025), each demonstrating the potential to combine sophisticated reasoning with direct system control. As these capabilities continue to advance, LLM agents are expected to be integrated into an even broader range of systems, becoming indispensable in both consumer and enterprise applications. However, these capabilities also introduce significant security risks, most notably prompt injection.

Smart home gadgets have no limits these days. You can control everything from a garage door to every single light bulb in your house … if you have enough gusto to replace them all. Front doors have had smart accessories added to them over the years--smart door locks, video doorbells, sensors to tell you whether the door is shut--so why not make the door itself smart? Home Depot's newest smart door, made by Feather River and powered by Home Depot's smart-home Hubspace platform, incorporates a smart glass window, and starting today you can purchase it on Home Depot's website. It'll require either a USB-C power connection or using the included battery to power that smart window. That's still not cheap, but it isn't a terrible price for a front door with a large window, let alone a window you can control.

It never ceases to amaze my family that while I'm a pretty savvy tech writer who covers B2B enterprise software, I often need guidance when it comes to using consumer products. Some might even say I don't know what I'm doing. In my defense, besides a Nest thermostat and a refrigerator that flags us when the door is open too long (my husband set up and controls both devices), we don't have much of a smart home. But it's a brave new world out there, and when I was given the opportunity to write about my experiences with a video doorbell, I jumped at it. We used a Ring Battery Doorbell Plus for our initial dabbling, but most of the lessons learned could apply to any make or model of video doorbell, including those from ADT, Arlo, Blink, Eufy, or Vivent.

Smart video doorbells are an easy and effective way to improve your home security and ensure you never miss a package again. However, chunky outdated designs, short battery life and expensive subscriptions can often sour the deal. Thankfully, there are plenty of other ways to inject some intelligence into your front door, no matter whether you live in an apartment, house or villa. EZVIZ has a range of innovative and versatile solutions to suit almost any home. In this article, we'll detail three of our favourite EZVIZ smart entry products, all with their own unique benefits, allowing for convenient and secure entry to a variety of living spaces.

A restaurant in a rural Oregon city couldn't find enough servers to stay fully staffed. So the owner hired a robot named Plato. She had no idea how much pushback she'd get from the community. A San Francisco smoothie startup promised to create customers "one-of-a-kind" recipes, but two months after opening, the store was shuttered. The shop, BetterBlends, used artificial intelligence to generate custom smoothies based on customer preferences.

Kurt "The CyberGuy" Knutsson provides tips on how to limit the device's notifications. Do you ever feel like your Alexa device is listening to you a little too much? Do you wish you could have more control over what it says and when it says it? It's great that they can be set up to lock our doors, turn off our lights or give us the weather. STAY UPDATED WITH KURT'S FREE CYBERGUY NEWSLETTER TO GET SECURITY ALERTS, QUICK TIPS, TECH REVIEWS AND EASY HOW-TO'S TO MAKE YOU SMARTER What I don't appreciate about Alexa devices, however, is that they sometimes can give us extra information that we never asked for, which can be annoying.

AI is going to end up everywhere within Microsoft's consumer products: search, Office, business intelligence…and yes, eventually, even Windows. So what could an AI-powered Windows actually look like? If we had to guess, we'd say that the first drips of Bing's AI won't transform into a flood until some ways down the road. In part, that's because AI requires either a persistent internet connection, AI-infused PC processors, or both. Both AMD and Intel are waiting for upcoming processor generations to include AI, with only Qualcomm Snapdragon Arm chips offering it today.

A perpetual shower of random raindrops falls inside a three-foot metal ring Dale Durran erected outside his front door (shown above). A part-time sculptor and full-time professor of atmospheric science at the University of Washington, Durran has co-authored dozens of papers describing patterns in Earth's ever-changing skies. It's a field for those who crave a confounding challenge trying to express with math the endless dance of air and water. A perpetual shower of random raindrops falls inside a three-foot metal ring Dale Durran erected outside his front door (shown above). A part-time sculptor and full-time professor of atmospheric science at the University of Washington, Durran has co-authored dozens of papers describing patterns in Earth's ever-changing skies.

Keeping your home clean, organized and secure can be a chore, and your loved ones likely feel the same way. Fortunately, there are gadgets that can help make it a little easier. We review smart speakers, robotic vacuums and Instant Pots all year long, and for the holiday season we've compiled a list of our recent favorites in the home tech space that will make excellent gifts. And your giftee doesn't have to be tech savvy to use all of them either -- plenty of our recommendations amount to baby steps into the smart home world for those who would rather start off slow. We almost always recommend the multi-purpose Instant Pot in our holiday gift guides and this year is no exception.

I have got a new doorbell. It should be; it cost £89. It's a Ring video doorbell; you'll have seen them around. There are others available, made by other companies, with other four-letter names such as Nest and Arlo. When someone rings my doorbell, I'm alerted on my smartphone. I can see who is there, and speak to them. C major first inversion chord, arpeggiated, repeated, for the musically trained – you'll recognise it if you've heard it. Amazon, as it happens; Amazon acquired Ring in 2018, reportedly for more than $1bn.