Technology
New prosthetics restore natural movement via nerve connection
In the world of prosthetics, a groundbreaking advancement is changing the game for individuals with lower-limb amputations.
Researchers at MIT, in collaboration with Brigham and Women’s Hospital, have developed a neuroprosthetic system that allows users to control their prosthetic legs using their own nervous systems.
This innovative approach could bring us closer to a future of fully integrated, naturally controlled artificial limbs.
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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)
The AMI: A surgical game-changer
At the heart of this breakthrough is a surgical procedure known as the agonist-antagonist myoneural interface, or AMI. Unlike traditional amputation methods, the AMI reconnects muscles in the residual limb, preserving the natural push-pull dynamics of muscle pairs. This seemingly simple change has profound implications for prosthetic control and function.
Illustration of how the neuroprosthetic system works (MIT Media Lab)
Dr. Hugh Herr, a professor at MIT and senior author of the study, explained the significance: “This is the first prosthetic study in history that shows a leg prosthesis under full neural modulation, where a biomimetic gait emerges. No one has been able to show this level of brain control that produces a natural gait, where the human’s nervous system is controlling the movement, not a robotic control algorithm.”
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Dr. Hugh Herr pictured with the neuroprosthetic system (Jimmy Day, MIT Media Lab)
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The power of proprioception
The key advantage of the AMI system is its ability to provide users with proprioceptive feedback, the sense of where their limb is in space. This sensory information, often taken for granted by those with intact limbs, is crucial for natural movement and control. With the AMI, patients regain a portion of this vital feedback, allowing them to walk more naturally and confidently.
In the study, seven patients with AMI surgery were compared to seven with traditional amputations. The results were striking. AMI patients walked faster, navigated obstacles more easily and climbed stairs with greater agility. They also demonstrated more natural movements, such as pointing their toes upward when stepping over obstacles, a subtle but important aspect of a natural gait.
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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)
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Adapting to real-world challenges
One of the most impressive aspects of the AMI system is its versatility. Patients were able to adapt their gait to various real-world conditions, including walking on slopes and navigating stairs. This adaptability is crucial for everyday life, where terrain and challenges can change rapidly.
The system’s responsiveness was put to the test in an obstacle-crossing trial. AMI patients were able to modify their gait to clear obstacles more effectively than those with traditional prosthetics. This ability to rapidly adjust to unexpected challenges is a hallmark of natural limb function and represents a significant leap forward in prosthetic technology.
A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)
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The science of sensory feedback
The success of the AMI system hinges on its ability to augment residual muscle afferents, which are the sensory signals sent from muscles to the nervous system. Remarkably, even a modest increase in these signals allows for significantly improved control and function. This finding highlights the incredible adaptability of the human nervous system and its ability to integrate and utilize even partial sensory information.
Dr. Hyungeun Song, lead author of the study, notes: “One of the main findings here is that a small increase in neural feedback from your amputated limb can restore significant bionic neural controllability, to a point where you allow people to directly neurally control the speed of walking, adapt to different terrain and avoid obstacles.”
A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)
Looking to the future
While this research represents a significant step forward, it’s just the beginning. The team at MIT is exploring ways to further enhance sensory feedback and improve the integration between the human nervous system and prosthetic devices. The AMI procedure has already been performed on about 60 patients worldwide, including those with arm amputations, suggesting broad applicability across different types of limb loss.
As this technology continues to evolve, we may see even more natural and intuitive control of artificial limbs. The ultimate goal is to create prosthetics that feel and function like a natural part of the user’s body, blurring the line between human and machine.
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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)
Kurt’s key takeaways
The development of prosthetic limbs controlled by the nervous system marks the beginning of a new era in bionics. It offers hope for improved mobility, independence and quality of life for millions of people living with limb loss. Moreover, it provides valuable insights into the plasticity of the human nervous system and our ability to integrate with advanced technology.
As we continue to push the boundaries of what’s possible in merging biology and technology, we open up new frontiers in human augmentation and rehabilitation. The implications extend far beyond prosthetics, potentially influencing fields such as neurology, robotics and even our understanding of human consciousness and embodiment.
How comfortable would you be with technology that directly interfaces with your nervous system? Let us know by writing us at Cyberguy.com/Contact.
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Technology
Musk says he’s going to open-source the new X algorithm next week
In 2023, what was then still called Twitter, open-sourced at least portions of the code that decided what it served up in your feed. But that GitHub repository is hopelessly out of date, with the vast majority of the files appearing to be from the initial upload three years ago. Elon Musk says that in seven days, he will open-source X’s new algorithm and finally give people a peek behind the curtain and possibly a technical explanation as to why your feed is 90 percent rage bait.
Elon has always made promises to open-source parts of X, and has followed through to at least some degree, including Grok-1 in 2024. But xAI is now on Grok-3, and the Grok GitHub repository hasn’t been updated in two years. The timing of the announcement open-sourcing the X algorithm is also likely to be met with some suspicion, as Musk is fending off criticism from across the globe and the political spectrum regarding Grok’s willingness to make deepfake nudes.
Musk says this release of the X algorithm will include “all code used to determine what organic and advertising posts are recommended to users.” He also says this will be just the first, with updates coming every four weeks, and that those will include developer notes highlighting any changes. Of course, considering how things played out in 2023, you’ll have to forgive us for taking that promise with a grain of salt.
Technology
Covenant Health data breach affects nearly 500,000 patients
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When a healthcare data breach is first disclosed, the number of people affected is often far lower than the final tally. That figure frequently climbs as investigations continue.
That’s exactly what happened with Andover, Massachusetts-based Covenant Health. The Catholic healthcare provider has confirmed a cyberattack discovered last May may have affected nearly 500,000 patients, a sharp increase from the fewer than 8,000 people it initially reported earlier this year.
A ransomware group later claimed responsibility for the incident, though Covenant Health has not publicly confirmed the use of ransomware. The attackers accessed names, addresses, Social Security numbers and health information, among other sensitive data that could put patients at serious risk.
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UNIVERSITY OF PHOENIX DATA BREACH HITS 3.5M PEOPLE
Covenant Health detected suspicious activity in late May 2025, but investigators later confirmed attackers had already accessed systems days earlier. (Kurt “CyberGuy” Knutsson)
What happened in the Covenant Health breach
Covenant Health says it detected unusual activity in its IT environment May 26, 2025. A later investigation revealed that an attacker had actually gained access eight days earlier, on May 18, and was able to access patient data during that window.
In July, Covenant Health told regulators that the breach affected 7,864 individuals. After completing what it describes as extensive data analysis, the organization now says that up to 478,188 individuals may have been affected.
Covenant Health operates hospitals, nursing and rehabilitation centers, assisted living residences and elder care organizations across New England and parts of Pennsylvania. That wide footprint means the breach potentially touched patients across multiple states and care settings.
In late June, the Qilin ransomware group claimed responsibility for the attack, Bleeping Computer reported. The group alleged it stole 852 GB of data, totaling nearly 1.35 million files. Covenant Health has not confirmed those figures, but it did acknowledge that patient information was accessed.
According to the organization, the exposed data may have included names, addresses, dates of birth, medical record numbers, Social Security numbers, health insurance details and treatment information such as diagnoses, dates of treatment and types of care received.
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Qilin ransomware lists Covenant Health on its data leak site. (Bleeping Computer)
What Covenant Health is telling patients
In a notice sent to regulators and patients, Covenant Health says it engaged third-party forensic specialists to investigate the incident and determine what data was involved. The organization says its data analysis is ongoing as it continues identifying individuals whose information may have been involved.
Then there are the familiar statements every company makes after a breach, claiming they’ve strengthened the security of their IT systems to help prevent similar incidents in the future. Covenant Health says it has also set up a dedicated toll-free call center to handle questions related to the breach.
Beginning Dec. 31, 2025, the organization started mailing notification letters to patients whose information may have been compromised. For individuals whose Social Security numbers may have been involved, Covenant Health is offering complimentary credit monitoring and identity theft protection services.
We reached out to Covenant Health, and the company confirmed the expanded scope of the incident and outlined steps being taken to notify patients and enhance security safeguards.
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The breach exposed highly sensitive information, including names, Social Security numbers, medical records and treatment details tied to nearly half a million patients. (Kurt “CyberGuy” Knutsson)
7 steps you can take to protect yourself after the Covenant Health breach
If you received a notice from Covenant Health, or if your data has been exposed in any healthcare breach, these steps can help reduce the risk of misuse.
1) Enroll in the free identity protection offered
If the organization offers you credit monitoring or identity protection, take it. These services can alert you to suspicious activity tied to your Social Security number, credit file or identity details before real damage is done. If you’re not offered one and want to be on the safer side, you might consider getting one yourself.
Identity theft companies can monitor personal information like your Social Security number, phone number and email address and alert you if it is being sold on the dark web or being used to open an account. They can also assist you in freezing your bank and credit card accounts to prevent further unauthorized use by criminals.
See my tips and best picks on how to protect yourself from identity theft at Cyberguy.com
2) Monitor medical and insurance statements closely
Medical identity theft often shows up quietly. Review an explanation of benefits (EOBs), insurance claims and billing statements for services you don’t recognize. If something looks off, report it to your insurer immediately.
3) Place a fraud alert or credit freeze
A fraud alert tells lenders to take extra steps to verify your identity before approving credit. A credit freeze goes further by blocking new accounts entirely unless you lift it. If Social Security numbers were exposed, a freeze is usually the safer option.
To learn more about how to do this, go to Cyberguy.com and search “How to freeze your credit.”
4) Use a password manager
Healthcare breaches often lead to credential-stuffing attacks elsewhere. A password manager ensures every account uses a unique password, so one exposed dataset can’t unlock everything else. It also makes it easier to update passwords quickly after a breach.
Next, see if your email has been exposed in past breaches. Our No. 1 password manager pick includes a built-in breach scanner that checks whether your email address or passwords have appeared in known leaks. If you discover a match, immediately change any reused passwords and secure those accounts with new, unique credentials.
Check out the best expert-reviewed password managers of 2025 at Cyberguy.com.
5) Be cautious of phishing scams and use strong antivirus software
Breaches are frequently followed by phishing emails, texts or calls that reference the incident to sound legitimate. Attackers may pose as the healthcare provider, an insurer or a credit bureau. Don’t click links or share information unless you verify the source independently.
The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have antivirus software installed on all your devices. This protection can also alert you to phishing emails and ransomware scams, keeping your personal information and digital assets safe.
Get my picks for the best 2025 antivirus protection winners for your Windows, Mac, Android and iOS devices at Cyberguy.com.
6) Consider a personal data removal service
Once your data leaks, it often spreads across data broker sites. Personal data removal services help reduce your digital footprint by requesting takedowns from these databases. While they can’t erase everything, they lower your exposure and make targeted fraud harder.
While no service can guarantee the complete removal of your data from the internet, a data removal service is really a smart choice. They aren’t cheap, and neither is your privacy. These services do all the work for you by actively monitoring and systematically erasing your personal information from hundreds of websites. It’s what gives me peace of mind and has proven to be the most effective way to erase your personal data from the internet. By limiting the information available, you reduce the risk of scammers cross-referencing data from breaches with information they might find on the dark web, making it harder for them to target you.
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.
Get a free scan to find out if your personal information is already out on the web: Cyberguy.com.
7) Review your credit reports regularly
You’re entitled to free credit reports from all major bureaus. Check them for unfamiliar accounts, hard inquiries or address changes. Catching fraud early makes it far easier to contain.
Kurt’s key takeaway
Healthcare organizations remain prime targets for cybercriminal groups because of the volume and sensitivity of the data they store. Medical records contain a mix of personal, financial and health information that is difficult to change once exposed. Unlike a password, you cannot reset a diagnosis or treatment history. This breach also shows how early disclosures often underestimate impact. Large healthcare networks rely on complex systems and third-party vendors, which can slow forensic analysis in the early stages. As investigations continue, the number of affected individuals often climbs.
Do you think healthcare organizations do enough to protect user data? Let us know by writing to us at Cyberguy.com.
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Technology
Amazfit’s Active 2 tracker and Blu-rays are this week’s best deals
The start of the year is typically a great time to snag deals on health and fitness gear, including trackers and wireless earbuds, and this week was no exception. We found plenty on sale and highlighted the best picks below. Not all of the deals are related to New Year’s resolutions, though; there are also a number of other worthwhile deals worth checking out. Despite the Consumer Electronics Show wrapping up earlier this week, we’re already seeing deals roll in, for example. And if your main goal is to unwind this weekend, we’ve spotted solid deals on Blu-rays to help you relax. Below, you’ll find all of our favorite deals from this week.
Of fitness trackers on sale right now, the deal on the Amazfit Active 2 is ideal, especially if you’re on a budget. It’s currently on sale for just $84.99 ($15 off) at Amazon, Best Buy, and Target, which is just $5 shy of its lowest price to date.
We think the Active 2 is one of the best fitness tracker you can currently buy, namely because it offers a feature set you don’t typically don’t find at this price point. It covers most of the health and fitness features people need and then some, with continuous heart rate and blood oxygen tracking, in addition to menstrual cycle tracking. You also get offline maps with turn-by-turn navigation and up to nine days of battery life — far longer than most smartwatches. It looks stylish, too, thanks to its stainless steel case and 2,000-nit OLED display that makes it seem more expensive than it is.
What makes the latest Nano Charger stand out from previous models its built-in display, which shows real-time charging details like power flow, charge level, and temperature at a glance. If you have an iPhone 15 or newer — or an iPad Pro released in 2020 or later — it can also adjust charging based on the device’s power needs. What’s more, it delivers up to 45W of power in a compact design with folding prongs that rotate 180 degrees, allowing you to squeeze it into smaller spaces.
Three more of this week’s best deals
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