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The Future of Electromagnetic Shields Could Be Lighter, Stronger, and Greener

Researchers are exploring a new generation of electromagnetic shielding materials that combine exceptional conductivity with improved strength and flexibility.

Electromagnetic shielding materials must block unwanted signals without adding excessive weight or sacrificing durability. Conventional options, including metals, conductive polymers, and carbon-based materials, can be heavy, inflexible, or expensive. Researchers are now exploring composites that combine exceptional electrical conductivity with the strength and flexibility needed for practical applications.

One promising approach pairs two-dimensional transition metal carbides and nitrides (MXenes) with nanocellulose, a lightweight material derived from natural biomass. MXenes offer excellent conductivity and chemical stability, but films made from them alone tend to be brittle. Adding nanocellulose can improve mechanical strength while preserving the electrical properties needed to shield electronics from electromagnetic interference.

A Mysterious Particle Could Explain Why Anything Exists at All

A long-lived heavy neutrino could have reshaped the early universe’s expansion and tipped the balance toward matter, according to a theory that predicts traces in primordial gravitational waves.

If matter and antimatter had annihilated each other completely after the Big Bang, the universe would have been left with energy and no matter. Explaining why matter survived, when current theories suggest the two should have wiped each other out, remains one of the biggest puzzles in modern physics.

Physicists at the University of Southampton and the Indian Institute of Technology Kanpur have proposed an explanation involving a particle largely overlooked for decades. Known as a “decoupled” heavy neutrino, it is a heavier relative of the neutrino, one of the lightest particles in the universe. Most theories explaining the matter-antimatter imbalance have ignored this heavy relative because its interactions with other particles were considered too weak to have an impact.

Linux Kernel TCP Flaw With 9.8 CVSS Score Affects Ubuntu, Red Hat and Other Distributions

Anthropic said on October 27 that its AI model wrote an exploit that uses the flaw to let a remote attacker with no credentials run commands as root on Linux servers with a multipath TCP listener.

As of October 29, Ubuntu and RHEL have not released a fixed kernel. Red Hat, Amazon, Oracle, and SUSE score the flaw between 5.9 and 8.1, lower than the kernel team’s 9.8.

The flaw is a race condition in the code that sets up new IPv4 TCP connections. It can make the kernel read memory it has already freed, a bug type known as a use-after-free.

26,400 Valid Cloud and AI Credentials Found Exposed in Public Gitee Repositories

26,400 credentials that developers left in public code on Gitee, a Chinese code-hosting service, still worked when a researcher tested them. Anyone who copied one from that code could have used it.

Independent researcher Ben Zimmermann found them by scanning 7.25 million public Gitee repositories and reported the results on October 28. Most were keys for cloud and AI services, led by 9,473 Alibaba Cloud AccessKey pairs.

Zimmermann sent the vendors with the most exposed keys a list of their credentials, but he did not contact the developers who leaked them. When he published, he had not confirmed that any of the reported credentials had been revoked. So anyone who has pushed a key to a public Gitee repository cannot assume it has been revoked.

Cisco Patches Actively Exploited ASA and FTD VPN Flaw That Can Crash Firewalls

The vulnerability, tracked as CVE-2026–76418, is rated 8.6 on the CVSS scoring system. Successful exploitation could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial-of-service (DoS) condition.

According to Cisco, the issue is rooted in the Remote Access SSL VPN service of ASA and FTD software.

“This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group,” it said in a Wednesday advisory. “An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.”

Chrome extensions with 13.4 million installs caught hijacking searches

A massive search-hijacking campaign involving 319 Chrome extensions with a combined 13.4 million reported installations redirected users’ searches through tracking servers to generate advertising revenue from Bing and Yahoo.

A new report by Socket’s John Tuckner expands on the researcher’s April 2025 discovery of 57 Chrome extensions with 6 million users, adding 264 newly identified add-ons with another 8.7 million users.

“These extensions were created by a handful of organized operators all working from the same idea: quietly take over the browser’s default search engine, route every query through a suspicious proxy server, and collect partner referral payments from Yahoo or Bing under a syndication partner ID,” explained Tuckner.