Grok incident renews scrutiny of generative AI safety

Elon Musk’s Grok chatbot has triggered international backlash after generating sexualised images of women and girls in response to user prompts on X, raising renewed concerns over AI safeguards and platform accountability.

The images, some depicting minors in minimal clothing, circulated publicly before being removed. Grok later acknowledged failures in its own safeguards, stating that child sexual abuse material is illegal and prohibited, while xAI initially offered no public explanation.

European officials reacted swiftly. French ministers referred the matter to prosecutors, calling the output illegal, while campaigners in the UK argued the incident exposed delays in enforcing laws against AI-generated intimate images.

In contrast, US lawmakers largely stayed silent despite xAI holding a major defence contract. Musk did not directly address the controversy; instead, posting unrelated content as criticism mounted on the platform.

The episode has intensified debate over whether current AI governance frameworks are sufficient to prevent harm, particularly when generative systems operate at scale with limited real-time oversight.

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ChatGPT reaches 40 million daily users for health advice

More than 40 million people worldwide now use ChatGPT daily for health-related advice, according to OpenAI.

Over 5 percent of all messages sent to the chatbot relate to healthcare, with three in five US adults reporting use in the past three months. Many interactions occur outside clinic hours, highlighting the demand for AI guidance in navigating complex medical systems.

Users primarily turn to AI to check symptoms, understand medical terms, and explore treatment options.

OpenAI emphasises that ChatGPT helps patients gain agency over their health, particularly in rural areas where hospitals and specialised services are scarce.

The technology also supports healthcare professionals by reducing administrative burdens and providing timely information.

Despite growing adoption, regulatory oversight remains limited. Some US states have attempted to regulate AI in healthcare, and lawsuits have emerged over cases where AI-generated advice has caused harm.

OpenAI argues that ChatGPT supplements rather than replaces medical services, helping patients interpret information, prepare for care, and navigate gaps in access.

Healthcare workers are also increasingly using AI. Surveys show that two in five US professionals, including nurses and pharmacists, use generative AI weekly to draft notes, summarise research, and streamline workflows.

OpenAI plans to release healthcare policy recommendations to guide the responsible adoption of AI in clinical settings.

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Healthcare systems face mounting risk from CrazyHunter ransomware

CrazyHunter ransomware has emerged as a growing threat to healthcare organisations, with repeated attacks targeting hospitals and medical service providers. The campaign focuses on critical healthcare infrastructure, raising concerns about service disruption and the exposure of sensitive patient data.

The malware is developed in Go and demonstrates a high level of technical maturity. Attackers gain initial access by exploiting weak Active Directory credentials, then use Group Policy Objects to distribute the ransomware rapidly across compromised networks.

Healthcare institutions in Taiwan have been among the most affected, with multiple confirmed incidents reported by security researchers. The pattern suggests a targeted campaign rather than opportunistic attacks, increasing pressure on regional healthcare providers to strengthen defences.

Once deployed, CrazyHunter turns off security tools and encrypts files to conceal its activity. Analysts note the use of extensive evasion techniques, including memory-based execution and redundant encryption methods, to ensure the delivery of the payload.

CrazyHunter employs a hybrid encryption scheme that combines ChaCha20 and elliptic curve cryptography, utilising partial file encryption to expedite the impact. Encrypted files receive a ‘.Hunter’ extension, with recovery dependent on the attackers’ private keys, reinforcing the pressure to pay ransoms.

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World Liberty Financial files to launch national trust bank for USD1

World Liberty Financial’s WLTC Holdings LLC has applied with the Office of the Comptroller of the Currency to establish World Liberty Trust Company, National Association (WLTC), a national trust bank designed for stablecoin operations.

The move aims to centralise issuance, custody, and conversion of USD1, the company’s dollar-backed stablecoin. USD1 has grown rapidly, reaching over $3.3 billion in circulation during its first year.

The trust company will serve institutional clients, providing stablecoin conversion and secure custody for USD1 and other supported stablecoins.

WLTC will operate under federal supervision, offering fee-free USD1 issuance and redemption, USD conversion, and custody with market-rate conversions. Operations will comply with the GENIUS Act and follow strict AML, sanctions, and cybersecurity protocols.

The stablecoin is fully backed by US dollars and short-duration Treasury obligations, operating across ten blockchain networks, including Ethereum, Solana, and TRON.

By combining regulatory oversight with full-stack stablecoin services, WLTC seeks to provide institutional clients with clarity and efficiency in digital asset operations.

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Meet the voice-first AI companion with personality

Portola has launched Tolan, a voice-first AI companion that learns from ongoing conversations through personalised, animated characters. Tolan is designed for open-ended dialogue, making voice interactions more natural and engaging than standard text-based AI.

Built around memory and character design, the platform uses real-time context reconstruction to maintain personality and track shifting topics. Each turn, the system retrieves user memories, persona traits, and conversation tone, enabling coherent, adaptive responses.

GPT‑5.1 has improved latency, steerability, and consistency, reducing memory recall errors by 30% and boosting next-day retention over 20%.

Tolan’s architecture combines fast vector-based memory, dynamic emotional adjustment, and layered persona scaffolds. Sub-second responses and context rebuilding help the AI handle topic changes, maintain tone, and feel more human-like.

Since February 2025, Tolan has gained over 200,000 monthly users, earning a 4.8-star rating on the App Store. Future plans focus on multimodal voice agents integrating vision, context, and enhanced steerability to expand the boundaries of interactive AI.

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AI and optical imaging transform thyroid cancer surgery

Thyroid cancer, the most common endocrine malignancy, poses challenges for surgeons trying to remove tumours while preserving healthy tissue.

Fine-needle aspiration and pathology are accurate but slow, providing no real-time guidance and sometimes causing unnecessary or incomplete surgeries. Dynamic Optical Contrast Imaging (DOCI) uses cells’ natural light to quickly distinguish healthy tissue from cancer.

The technique captures 23 optical channels from freshly excised tissue, creating detailed spectral maps without dyes or contrast agents. These optical signatures allow for rapid, label-free tissue analysis.

Researchers at Duke University and UCLA combined DOCI with AI to improve accuracy in classification and localisation. A two-stage machine-learning approach first categorised tissue as healthy or cancerous, including common and aggressive thyroid cancer subtypes.

Deep-learning models then produced tumour probability maps, pinpointing cancerous regions with minimal false positives.

Although initial studies focused on post-excision tissue, the technology could soon offer surgeons real-time guidance in the operating room. By combining optical imaging with AI, DOCI may reduce unnecessary surgery, preserve healthy tissue, and improve outcomes for thyroid cancer patients.

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New UK cyber strategy focuses on trust in online public services

The UK government has announced new measures to strengthen the security and resilience of online public services as more interactions with the state move online. Ministers say public confidence is essential as citizens increasingly rely on digital systems for everyday services.

Backed by more than £210 million, the UK Government Cyber Action Plan outlines how cyber defences and digital resilience will be improved across the public sector. A new Government Cyber Unit will coordinate risk identification, incident response, and action on complex threats spanning multiple departments.

The plan underpins wider efforts to digitise public services, including benefits applications, tax payments, and healthcare access. Officials argue that secure systems can reduce bureaucracy and improve efficiency, but only if users trust that their data is protected.

The announcement coincides with parliamentary debate on the Cyber Security and Resilience Bill, which sets clearer expectations for companies supplying services to the government. The legislation is intended to strengthen cyber resilience across critical supply chains.

Ministers also highlighted new steps to address software supply chain risks, including a Software Security Ambassador Scheme promoting basic security practices. The government says stronger cyber resilience is essential to protect public services and maintain public trust.

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ChatGPT Health offers personalised health support

OpenAI has launched ChatGPT Health, a secure platform linking users’ health information with ChatGPT’s intelligence. The platform supports, rather than replaces, medical care, helping users understand test results, prepare for appointments, and manage their wellness.

ChatGPT Health allows users to safely connect medical records and apps such as Apple Health, Function, and MyFitnessPal. All data is stored in a separate Health space with encryption and enhanced privacy to keep sensitive information secure.

Conversations in Health are not used to train OpenAI’s models.

The platform was developed with input from more than 260 physicians worldwide, ensuring guidance is accurate, clinically relevant, and prioritises safety.

HealthBench, a physician-informed evaluation framework, helps measure quality, clarity, and appropriate escalation in responses, supporting users in making informed decisions about their health.

ChatGPT Health is initially available outside the EEA, Switzerland, and the UK, with wider access coming in the coming weeks. Users can sign up for a waitlist and begin connecting records and wellness apps to receive personalised, context-aware health insights.

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Roblox rolls out facial age checks for chat

The online gaming platform, Roblox, has begun a global rollout requiring facial age checks before users can access chat features, expanding a system first tested in selected regions late last year.

The measure applies wherever chat is available and aims to create age-appropriate communication environments across the platform.

Instead of relying on self-declared ages, Roblox uses facial age estimation to group users and restrict interactions, limiting contact between adults and children under 16. Younger users need parental consent to chat, while verified users aged 13 and over can connect more freely through Trusted Connections.

The company says privacy safeguards remain central, with images deleted immediately after secure processing and no image sharing allowed in chat. Appeals, ID verification and parental controls support accuracy, while ongoing behavioural checks may trigger repeat age verification if discrepancies appear.

Roblox plans to extend age checks beyond chat later in 2026, including creator tools and community features, as part of a broader push to strengthen online safety and rebuild trust in youth-focused digital platforms.

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Meta pauses global launch of Ray-Ban Display glasses

The US tech company, Meta, has paused the international launch of its Ray-Ban Display smart glasses after seeing higher-than-expected demand in the US.

Meta had planned to begin selling the glasses in the UK, France, Italy and Canada in early 2026, but will now prioritise fulfilling US orders instead of expanding availability.

These smart glasses work with the Meta Neural Band wrist device, which interprets small hand movements.

Meta demonstrated new tools at CES in Las Vegas, including a teleprompter mode for delivering prepared remarks and a feature that lets users write messages by moving a finger across any surface while wearing the Neural Band. Pedestrian navigation support is also being extended to additional US cities.

Meta says demand has created waiting lists stretching well into 2026, prompting the pause while it reassesses global rollout plans.

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