| The Verge theverge.com
by
Robert Hart
Oct 30, 2025, 4:53 PM GMT+1

Huge cyber breaches are on the horizon thanks to AI-powered web browsers like ChatGPT Atlas and Comet, experts warn.

Web browsers are getting awfully chatty. They got even chattier last week after OpenAI and Microsoft kicked the AI browser race into high gear with ChatGPT Atlas and a “Copilot Mode” for Edge. They can answer questions, summarize pages, and even take actions on your behalf. The experience is far from seamless yet, but it hints at a more convenient, hands-off future where your browser does lots of your thinking for you. That future could also be a minefield of new vulnerabilities and data leaks, cybersecurity experts warn. The signs are already here, and researchers tell The Verge the chaos is only just getting started.

Atlas and Copilot Mode are part of a broader land grab to control the gateway to the internet and to bake AI directly into the browser itself. That push is transforming what were once standalone chatbots on separate pages or apps into the very platform you use to navigate the web. They’re not alone. Established players are also in the race, such as Google, which is integrating its Gemini AI model into Chrome; Opera, which launched Neon; and The Browser Company, with Dia. Startups are also keen to stake a claim, such as AI startup Perplexity — best known for its AI-powered search engine, which made its AI-powered browser Comet freely available to everyone in early October — and Sweden’s Strawberry, which is still in beta and actively going after “disappointed Atlas users.”

In the past few weeks alone, researchers have uncovered vulnerabilities in Atlas allowing attackers to take advantage of ChatGPT’s “memory” to inject malicious code, grant themselves access privileges, or deploy malware. Flaws discovered in Comet could allow attackers to hijack the browser’s AI with hidden instructions. Perplexity, through a blog, and OpenAI’s chief information security officer, Dane Stuckey, acknowledged prompt injections as a big threat last week, though both described them as a “frontier” problem that has no firm solution.

“Despite some heavy guardrails being in place, there is a vast attack surface,” says Hamed Haddadi, professor of human-centered systems at Imperial College London and chief scientist at web browser company Brave. And what we’re seeing is just the tip of the iceberg.

With AI browsers, the threats are numerous. Foremost, they know far more about you and are “much more powerful than traditional browsers,” says Yash Vekaria, a computer science researcher at UC Davis. Even more than standard browsers, Vekaria says “there is an imminent risk from being tracked and profiled by the browser itself.” AI “memory” functions are designed to learn from everything a user does or shares, from browsing to emails to searches, as well as conversations with the built-in AI assistant. This means you’re probably sharing far more than you realise and the browser remembers it all. The result is “a more invasive profile than ever before,” Vekaria says. Hackers would quite like to get hold of that information, especially if coupled with stored credit card details and login credentials often found on browsers.

Another threat is inherent to the rollout of any new technology. No matter how careful developers are, there will inevitably be weaknesses hackers can exploit. This could range from bugs and coding errors that accidentally reveal sensitive data to major security flaws that could let hackers gain access to your system. “It’s early days, so expect risky vulnerabilities to emerge,” says Lukasz Olejnik, an independent cybersecurity researcher and visiting senior research fellow at King’s College London. He points to the “early Office macro abuses, malicious browser extensions, and mobiles prior to [the] introduction of permissions” as examples of previous security issues linked to the rollout of new technologies. “Here we go again.”

Some vulnerabilities are never found — sometimes leading to devastating zero-day attacks, named as there are zero days to fix the flaw — but thorough testing can slash the number of potential problems. With AI browsers, “the biggest immediate threat is the market rush,” Haddadi says. “These agentic browsers have not been thoroughly tested and validated.”

But AI browsers’ defining feature, AI, is where the worst threats are brewing. The biggest challenge comes with AI agents that act on behalf of the user. Like humans, they’re capable of visiting suspect websites, clicking on dodgy links, and inputting sensitive information into places sensitive information shouldn’t go, but unlike some humans, they lack the learned common sense that helps keep us safe online. Agents can also be misled, even hijacked, for nefarious purposes. All it takes is the right instructions. So-called prompt injections can range from glaringly obvious to subtle, effectively hidden in plain sight in things like images, screenshots, form fields, emails and attachments, and even something as simple as white text on a white background.

Worse yet, these attacks can be very difficult to anticipate and defend against. Automation means bad actors can try and try again until the agent does what they want, says Haddadi. “Interaction with agents allows endless ‘try and error’ configurations and explorations of methods to insert malicious prompts and commands.” There are simply far more chances for a hacker to break through when interacting with an agent, opening up a huge space for potential attacks. Shujun Li, a professor of cybersecurity at the University of Kent, says “zero-day vulnerabilities are exponentially increasing” as a result. Even worse: Li says as the flaw starts with an agent, detection will also be delayed, meaning potentially bigger breaches.

It’s not hard to imagine what might be in store. Olejnik sees scenarios where attackers use hidden instructions to get AI browsers to send out personal data or steal purchased goods by changing the saved address on a shopping site. To make things worse, Vekaria warns it’s “relatively easy to pull off attacks” given the current state of AI browsers, even with safeguards in place. “Browser vendors have a lot of work to do in order to make them more safe, secure, and private for the end users,” he says.

For some threats, experts say the only real way to keep safe using AI browsers is to simply avoid the marquee features entirely. Li suggests people save AI for “only when they absolutely need it” and know what they’re doing. Browsers should “operate in an AI-free mode by default,” he says. If you must use the AI agent features, Vekaria advises a degree of hand-holding. When setting a task, give the agent verified websites you know to be safe rather than letting it figure them out on its own. “It can end up suggesting and using a scam site,” he warns.

bbc.com
Joe TidyCyber correspondent, BBC World Service

Prepare to switch to offline systems in the event of a cyber-attack, firms are being advised.

People should plan for potential cyber-attacks by going back to pen and paper, according to the latest advice.

The government has written to chief executives across the country strongly recommending that they should have physical copies of their plans at the ready as a precaution.

A recent spate of hacks has highlighted the chaos that can ensue when hackers take computer systems down.

The warning comes as the National Cyber-Security Centre (NCSC) reported an increase in nationally significant attacks this year.

Criminal hacks on Marks and Spencer, The Co-op and Jaguar Land Rover have led to empty shelves and production lines being halted this year as the companies struggled without their computer systems.

Organisations need to "have a plan for how they would continue to operate without their IT, (and rebuild that IT at pace), were an attack to get through," said Richard Horne, chief executive of the NCSC.

Firms are being urged to look beyond cyber-security controls toward a strategy known as "resilience engineering", which focuses on building systems that can anticipate, absorb, recover, and adapt, in the event of an attack.

Plans should be stored in paper form or offline, the agency suggests, and include information about how teams will communicate without work email and other analogue work arounds.

These types of cyber attack contingency plans are not new but it's notable that the UK's cyber authority is putting the advice prominently in its annual review.

Although the total number of hacks that the NCSC dealt with in the first nine months of this year was, at 429, roughly the same as for a similar period last year, there was an increase in hacks with a bigger impact.

The number of "nationally significant" incidents represented nearly half, or 204, of all incidents. Last year only 89 were in that category.

A nationally significant incident covers cyber-attacks in the three highest categories in the NCSC and UK law enforcement categorisation model:

Category 1: National cyber-emergency.
Category 2: Highly significant incident.
Category 3: Significant incident.
Category 4: Substantial incident.
Category 5: Moderate incident.
Category 6: Localised incident.
Amongst this year's incidents, 4% (18) were in the second highest category "highly significant".

This marks a 50% increase in such incidents, an increase for the third consecutive year.

The NCSC would not give details on which attacks, either public or undisclosed, fall into which category.

But, as a benchmark, it is understood that the wave of attacks on UK retailers in the spring, which affected Marks and Spencer, The Co-op and Harrods, would be classed as a Significant incident.

One of the most serious attacks last year, on a blood testing provider, caused major problems for London hospitals. It resulted in significant clinical disruption and directly contributed to at least one patient death.

The NCSC would not say which category this incident would fall into.

The vast majority of attacks are financially motivated with criminal gangs using ransomware or data extortion to blackmail a victim into sending Bitcoins in ransom.

Whilst most cyber-crime gangs are headquartered in Russian or former Soviet countries, there has been a resurgence in teenage hacking gangs thought to be based in English-speaking countries.

So far this year seven teenagers have been arrested in the UK as part of investigations into major cyber-attacks.

As well as the advice over heightened preparations and collaboration, the government is asking organisations to make better use of the free tools and services offered by the NCSC, for example free cyber-insurance for small businesses that have completed the popular Cyber-Essentials programme.

'Basic protection'
Paul Abbott, whose Northamptonshire transport firm KNP closed after hackers encrypted its operational systems and demanded money in 2023, says it's no longer a case of "if" such incidents will happen, but when.

"We were throwing £120,000 a year at [cyber-security] with insurance and systems and third-party managed systems," Mr Abbott told BBC Radio 5 Live on Tuesday.

He said he now focuses on security, education and contingency - key to which involves planning what is needed to keep a business running in the event of an attack or outage.

"The call for pen and paper might sound old-fashioned, but it's practical," said Graeme Stewart, head of public sector at cyber-security firm Check Point, noting digital systems can be rendered "useless" once targeted by hackers.

"You wouldn't walk onto a building site without a helmet - yet companies still go online without basic protection," he added.

"Cybersecurity needs to be treated with the same seriousness as health and safety: not optional, not an afterthought, but part of everyday working life."

france24.com - Chinese authorities summoned Nvidia representatives on Thursday to discuss "serious security issues" over some of its artificial intelligence chips, as the US tech giant finds itself entangled in trade tensions between Beijing and Washington.
Nvidia is a world-leading producer of AI semiconductors, but the United States effectively restricts which chips it can export to China on national security grounds.

A key issue has been Chinese access to the "H20", a less powerful version of Nvidia's AI processing units that the company developed specifically for export to China.

The California-based firm said this month it would resume H20 sales to China after Washington pledged to remove licensing curbs that had halted exports.

But the firm still faces obstacles -- US lawmakers have proposed plans to require Nvidia and other manufacturers of advanced AI chips to include built-in location tracking capabilities.

And Beijing's top internet regulator said Thursday it had summoned Nvidia representatives to discuss recently discovered "serious security issues" involving the H20.

The Cyberspace Administration of China said it had asked Nvidia to "explain the security risks of vulnerabilities and backdoors in its H20 chips sold to China and submit relevant supporting materials".

The statement posted on social media noted that, according to US experts, location tracking and remote shutdown technologies for Nvidia chips "are already matured".

The announcement marked the latest complication for Nvidia in selling its advanced products in the key Chinese market, where it is in increasingly fierce competition with homegrown technology firms.

Nvidia committed
CEO Jensen Huang said during a closely watched visit to Beijing this month that his firm remained committed to serving local customers.

Huang said he had been assured during talks with top Chinese officials during the trip that the country was "open and stable".

"They want to know that Nvidia continues to invest here, that we are still doing our best to serve the market here," he said.

Nvidia this month became the first company to hit $4 trillion in market value -- a new milestone in Wall Street's bet that AI will transform the global economy.

Jost Wubbeke of the Sinolytics consultancy told AFP the move by China to summon Nvidia was "not surprising in the sense that targeting individual US companies has become a common tool in the context of US-China tensions".

"What is surprising, however, is the timing," he noted, after the two countries agreed to further talks to extend their trade truce.

"China's action may signal a shift toward a more assertive stance," Wubbeke said.

Beijing is also aiming to reduce reliance on foreign tech by promoting Huawei's domestically developed 910C chip as an alternative to the H20, he added.

"From that perspective, the US decision to allow renewed exports of the H20 to China could be seen as counterproductive, as it might tempt Chinese hyperscalers to revert to the H20, potentially undermining momentum behind the 910C and other domestic alternatives."

New hurdles to Nvidia's operation in China come as the country's economy wavers, beset by a years-long property sector crisis and heightened trade headwinds under US President Donald Trump.

Chinese President Xi Jinping has called for the country to enhance self-reliance in certain areas deemed vital for national security -- including AI and semiconductors -- as tensions with Washington mount.

The country's firms have made great strides in recent years, with Huang praising their "super-fast" innovation during his visit to Beijing this month.

www.nsb.gov.tw
In recent years, the international community has shown growing concerns over cybersecurity issues deriving from China-developed mobile applications (apps). Governments and independent research institutions worldwide have already issued warnings concerning data breaches in users’ communication security. To prevent China from illegally acquiring personal data of Taiwan’s nationals, National Security Bureau (NSB) has reviewed cybersecurity reports from countries around the world and organized relevant information, as per the National Intelligence Work Act. Subsequently, the NSB informed and coordinated with the Ministry of Justice Investigation Bureau (MJIB) and the Criminal Investigation Bureau (CIB) under the National Police Agency to conduct random inspection on several China-developed mobile apps. The results indicate the existence of security issues, including excessive data collection and privacy infringement. The public is advised to exercise caution when choosing mobile apps.

The 5 China-developed apps selected for inspection, consisting of rednote, Weibo, TikTok, WeChat, and Baidu Cloud, are widely used by Taiwanese nationals. The MJIB and CIB adopted the Basic Information Security Testing Standard for Mobile Applications v4.0 announced by the Ministry of Digital Affairs, and evaluated the apps against 15 indicators under 5 categories of violation, consisting of personal data collection, excessive permission usage, data transmission and sharing, system information extraction, and biometric data access.

All 5 apps have shown serious violations across multiple inspection indicators. Notably, the rednote fails to meet all 15 inspection standards. Weibo and TikTok violate 13 indicators, separately, as well as 10 for WeChat and 9 for Baidu Cloud. These findings suggest that the said China-made apps present cybersecurity risks far beyond the reasonable expectations for data-collection requirement taken by ordinary apps.

All 5 China-made apps are found to have security issues of excessively collecting personal data and abusing system permissions. The violations include unauthorized access to facial recognition data, screenshots, clipboard contents, contact lists, and location information. As to the category of system information extraction, all apps were found to collect data such as application lists and device parameters. Furthermore, as far as biometric data are concerned, users’ facial features may be deliberately harvested and stored by those apps.

With regard to data transmission and sharing, the said 5 apps were found to send packets back to servers located in China. This type of transmission has raised serious concerns over the potential misuse of personal data by third parties. Under China’s Cybersecurity Law and National Intelligence Law, Chinese enterprises are obligated to turn over user data to competent authorities concerning national security, public security, and intelligence. Such a practice would pose a significant security breach to the privacy of Taiwanese users, which could lead to data collection by specific Chinese agencies.

A wide range of countries, such as the US, Canada, the UK, and India, have already publicly issued warnings against or bans on specific China-developed apps. The European Union has also launched investigations under the General Data Protection Regulation framework into suspected data theft involving certain China-made apps. Substantial amount of fines are imposed in those cases. In response to the cybersecurity threats, the Taiwanese government has prohibited the use of Chinese-brand products regarding computer and communications technology within official institutions. Both software and hardware are included.

The NSB coordinates with the MJIB and CIB to test the 5 inspected China-developed apps, and confirms that widespread cybersecurity vulnerabilities indeed exist. The NSB strongly advises the public to remain vigilant regarding mobile device security and avoid downloading China-made apps that pose cybersecurity risks, so as to protect personal data privacy and corporate business secrets.

European regulators said TikTok Lite Rewards potentially caused addictive behavior, and the company failed to provide a risk assessment before launching the program.

U.S. officials imposed the “first of its kind” ban arguing that Kaspersky threatens U.S. national security because of its links to Russia.

I don’t think it’s an exaggeration to predict that artificial intelligence will affect every aspect of our society. Not by doing new things. But mostly by doing things that are already being done by humans, perfectly competently.

Replacing humans with AIs isn’t necessarily interesting. But when an AI takes over a human task, the task changes.

I monitor (in an amateur, clueless way) ransomware groups in my spare time, to see what intelligence can be gained from looking at victim orgs and what went wrong.

Basically, I’m a giant big dork with too much free time.

I’ve discovered two organisations with ransomware incidents, where the entry point appears to have been Exchange Server 2013 with Outlook Web Access enabled, where all available security updates were applied.

Untruths spouted by chatbots ended up on the web—and Microsoft's Bing search engine served them up as facts. Generative AI could make search harder to trust.