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New topological microscope tip reveals evidence of 2D altermagnetism

Researchers have fashioned a layered topological material into a scanning tunneling microscope (STM) tip that senses spin-related electronic states at atomic resolution.

The research team, led by Chen Xianhui and Wang Zhenyu from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), together with Xiang Bin from USTC, Liu Junwei from the Hong Kong University of Science and Technology and other collaborators, used this probe to obtain converging evidence for two-dimensional d-wave altermagnetic order on the surface of KV₂Se₂O.

The study was published online in Nature on Oct. 13.

Scientists Build a World-First DNA Computer That Runs Without Continuous Power

Reusable for up to 25 different calculations, a DNA computer points toward possible uses in energy-efficient computing and long-term data storage.

A DNA computer has added 10 and 3 in 30 seconds, using interacting strands in water instead of a silicon chip. Developed by researchers at Maynooth University (MU), the system can also multiply and divide without a continuous electricity supply.

The work, published in Nature, presents a first-of-its-kind system described as one of the most complex and fastest molecular computers yet reported.

Ghostscript flaw lets hackers hijack servers via PDF uploads

A critical heap buffer overflow vulnerability (CVE-2026–39919) in the Ghostscript interpreter and rendering engine could allow remote code execution through specially crafted PDF files.

The flaw was discovered on August 23 by researchers at Defiant’s platform Wordfence using their Argus AI-powered system.

Ghostscript is a PostScript and PDF interpreter that can render PDFs as images, generate thumbnails for previews, and optimize PDF files by compressing embedded images and removing unnecessary font data.

Microsoft releases Windows 10 KB5126657 extended security update

Microsoft released the Windows 10 KB5126657 extended security update, which includes this month’s record-breaking October 2026 Patch Tuesday fixes and a few bug fixes and changes.

If you are running Windows 10 Enterprise LTSC or are enrolled in the ESU program, you can install this update like normal by going into Settings, clicking on Windows Update, and manually performing a ‘Check for Updates.’

After installing this update, Windows 10 will be updated to build 19045.7807, and Windows 10 Enterprise LTSC 2021 will be updated to build 19044.7807.

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