Cybersecurity

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Illustration of US Treasury Secretary warning bank executives about AI cyberattack risks from Anthropic's Claude Mythos.
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US Treasury warns banks of AI cyberattack risks following Anthropic's Claude Mythos announcement

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In the wake of Anthropic's unveiling of its powerful Claude Mythos AI—capable of detecting and exploiting software vulnerabilities—the US Treasury Secretary has convened top bank executives to highlight escalating AI-driven cyber threats. The move underscores growing concerns as the AI is restricted to a tech coalition via Project Glasswing.

The FBI, CISA, NSA, EPA, Department of Energy, and US Cyber Command issued a joint advisory warning of intensified cyberattacks by Iranian-affiliated hackers on programmable logic controllers (PLCs) in US critical infrastructure. Attacks since at least March 2026 have caused operational disruptions and financial losses in government facilities, wastewater, water, energy, and municipal systems, amid escalating tensions in the US-Israel war with Iran.

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A cyberattack targeted Vivaticket, the ticketing system used by major museums such as the Louvre and Uffizi Galleries. The RansomHouse hacking group has claimed responsibility for the incident. Uffizi officials confirmed the attack but stated that no data was ultimately stolen.

Hong Kong's Correctional Services Department revealed that a hacker illegally accessed its IT system on Tuesday, compromising personal data of 6,800 current and former employees. The department stated there is no evidence of data leakage so far and has notified affected individuals.

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In Addis Ababa, the Information Network Security Administration has convened a discussion forum with various institutions to bolster digital finance regulation. The event operates under the motto “Secure Digital Finance for National Development.”

Researchers analyzing 10 million web pages have identified 1,748 active API credentials from 14 major providers exposed across nearly 10,000 websites, including those run by banks and healthcare providers. These leaks could enable attackers to access sensitive data or gain control over digital infrastructure. Nurullah Demir of Stanford University described the issue as very significant, affecting even major companies.

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BTG Pactual detected atypical Pix activities on the morning of Sunday, March 22, 2026, leading to a temporary suspension after hackers diverted about R$ 100 million. The bank states no client accounts were accessed or data exposed. Most of the amount has already been recovered.

 

 

 

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