NSA Loses Access to Mythos 5 AI, Advanced Tool for Detecting Security Flaws
WASHINGTON, Headline24.id – The United States National Security Agency (NSA) has reportedly lost access to Anthropic's advanced artificial intelligence (AI) model, Mythos 5, which was being used to help identify software vulnerabilities and strengthen cybersecurity defenses.
The report was revealed by The New York Times amidst a prolonged dispute between the U.S. government and the technology company Anthropic regarding the use of AI technology for military and national security purposes.
The access termination occurred after the administration of President Donald Trump imposed restrictions on Anthropic earlier this month, citing national security concerns.
This move directly impacted several intelligence agencies that had previously utilized the AI technology for various analytical and cyber operations.
AI Mythos 5 Assessed as Capable of Quickly Finding Security Flaws
According to reports cited by several international media outlets, Mythos 5 demonstrated impressive capabilities in detecting weaknesses in digital security systems.
During testing, the AI model was reportedly able to find vulnerabilities in highly secure U.S. government networks within a matter of hours.
This capability made Anthropic's AI technology one of the most widely used tools in the national security environment, including for intelligence analysis, operational planning, and strengthening cybersecurity defenses.
The loss of access to the system is said to present a unique challenge for the U.S. intelligence community, which has increasingly come to rely on artificial intelligence technology to support their tasks.
Dispute Originates from AI Use for Military Purposes
Tensions between the U.S. government and Anthropic have been escalating since February 2026.
At that time, the U.S. Department of Defense designated Anthropic as a risk to the government's technology supply chain after the company refused to relax certain restrictions on the use of AI for military needs.
Anthropic stated that it does not support the use of its technology for mass surveillance of the public or the development of fully autonomous weapon systems.
This stance triggered a response from the Trump administration, which subsequently ordered all federal agencies to gradually phase out the use of Anthropic's technology within a six-month period.
Anthropic Pursues Legal Action
In response to this policy, Anthropic sued the U.S. government.
The technology company argued that the government's decision was an act of retaliation for its refusal to remove certain safeguards on AI use in the military sector.
Despite the phased termination order, several media reports indicate that some government agencies are still using Anthropic's technology in specific operations while awaiting the legal process to unfold.
AI Integration in Intelligence and Military Sectors Under Scrutiny
This case has reignited the debate surrounding the increasingly widespread use of artificial intelligence in the defense and national security sectors.
Various government agencies in numerous countries are now beginning to leverage AI to accelerate data analysis, strengthen cybersecurity systems, and assist in strategic decision-making.
However, cybersecurity researchers and experts also warn that technologies that can be used to enhance digital defenses also have the potential to be exploited for faster and more massive cyberattacks.
Five Eyes Warns of AI Threats to Global Security
Similar warnings have also come from the Five Eyes intelligence alliance, comprising the United States, the United Kingdom, Australia, Canada, and New Zealand.
In a recent statement, cybersecurity experts from these five countries cautioned that the development of increasingly sophisticated AI models could be exploited by cybercriminals to attack governments, corporations, and critical infrastructure in various countries.
They believe that the continuously evolving capabilities of AI can lower the technical barriers for hackers and increase the scale of future digital security threats.
AI Plays an Increasing Role in National Security
The NSA's loss of access to Mythos 5 highlights the significant role of artificial intelligence in the modern security ecosystem.
On one hand, AI technology can help detect threats and strengthen cybersecurity systems. On the other hand, the use of this technology also raises debates about ethical boundaries, security, and oversight in its application within the military and intelligence sectors.
The developments in the case between the U.S. government and Anthropic are expected to remain a focus of attention, as they could influence the future direction of AI usage policies in national security.
