OpenAI Halts Training of Its Newest AI Models After Multiple Hacks

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28 September 2026 · 18:00 · Claude (Anthropic) · claude-sonnet-5

OpenAI has halted the training of its newest AI models after the company was hacked multiple times. The move underscores how vulnerable even the biggest AI players are to cyberattacks on their most valuable assets: training data and model weights.

OpenAI has halted training of its newest generation of AI models after the company was hit by multiple hacks. The news, reported by Dutch broadcaster BNR Nieuwsradio, shows that even market leaders in artificial intelligence are vulnerable to cyberattacks on their crown jewels: training data, model weights and research infrastructure. For a company that leads the world in AI development, this is a striking step backward.

What happened at OpenAI?

According to reports, OpenAI has been targeted by hacking attempts multiple times in recent months. The attacks focused on systems directly tied to the training of new models. To prevent further damage and safeguard sensitive data, the company decided to temporarily halt the training process for its newest models. Details about the precise nature of the hacks and which data may have been compromised have not yet been fully disclosed.

Why is this so significant?

Training advanced AI models requires enormous investments in computing power, data and specialized staff. A disruption to this process therefore affects not only the planning of new products, but also OpenAI's competitive edge over other major players such as Google, Meta and Anthropic. Training data and model weights are regarded as trade secrets of immense value: whoever obtains them could potentially build competing models or gain insight into how OpenAI trains and fine-tunes its systems. The incident also raises questions about security across the broader AI industry. If a company with the resources and expertise of OpenAI proves vulnerable to repeated hacks, it's a fair question how smaller players are protecting their systems. This fits a recurring theme in the sector: the speed at which AI applications are developed and rolled out regularly clashes with the care put into securing them.

An industry under increased pressure

OpenAI's decision is not an isolated case. Other major technology companies have recently taken steps to better secure their AI systems as well. NVIDIA, for instance, recently introduced a security platform designed to prevent AI agents from behaving in an uncontrolled, "rogue" manner. These developments point to a broader shift within the industry: where the past few years focused mainly on faster and more powerful models, attention is now shifting more firmly toward the security and controllability of AI systems. Regulators and experts are also closely watching this development. Reports of thousands of unnoticed incidents caused by AI systems, along with warnings from security firms about so-called shadow AI in the workplace, underline that the risks around AI extend beyond the models themselves. They equally concern the infrastructure in which those models are trained and deployed.

Consequences for users and the market

For users of OpenAI's products, such as ChatGPT, the training halt currently has no direct impact on existing services. However, the development of future, more powerful models may be delayed. For the market as a whole, it's a signal that the breakneck pace of progress in artificial intelligence doesn't necessarily continue without setbacks. Investors and competitors will be watching closely how OpenAI handles this incident and what security measures the company puts in place before resuming training.

Looking ahead

The hacks at OpenAI show that security is becoming an increasingly central theme within the AI industry. Where companies previously competed mainly on the capabilities of their models, the security of the underlying systems is now becoming just as important. How OpenAI resolves this incident and when training of new models resumes will help set the tone for how other major players handle similar risks. Anyone wanting to understand the development of AI over the years, including turning points like this one, can explore the history of artificial intelligence. For the latest developments on this topic and other current events, more AI news is available, and anyone wanting to dive deeper into concepts like model security can visit our knowledge base.

BNR NieuwsradioBNR Nieuwsradio


Source: BNR Nieuwsradio

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Content generated by Claude (Anthropic) · model: claude-sonnet-4-6