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New substitution method enables high-precision nuclear reaction measurements using natural copper

A joint research team has made important progress in the field of photoneutron cross section measurement. The team proposed a substitution measurement method that avoids the use of expensive and hard-to-prepare high-purity isotope targets, successfully measuring the 65 Cu(γ, n)64 Cu reaction cross section with high precision. This method only relies on natural copper (natCu) and previously measured copper-63 (63 Cu) data, without modifying experimental facility parameters, making it simple, efficient, and low-cost.

The related research results have been published in the journal Nuclear Science and Techniques. The team includes researchers from Henan Normal University, Shanghai Advanced Research Institute of the Chinese Academy of Sciences, Shanghai Institute of Applied Physics of the Chinese Academy of Sciences, and other institutions.

Matrix Push C2 Uses Browser Notifications for Fileless, Cross-Platform Phishing Attacks

That’s not all. Since the attack plays out via the web browser, it’s also a cross-platform threat. This essentially turns any browser application on any platform that subscribes to the malicious notifications to be enlisted to the pool of clients, giving adversaries a persistent communication channel.

Matrix Push C2 is offered as a malware-as-a-service (MaaS) kit to other threat actors. It’s sold directly through crimeware channels, typically via Telegram and cybercrime forums, under a tiered subscription model: about $150 for one month, $405 for three months, $765 for six months, and $1,500 for a full year.

“Payments are accepted in cryptocurrency, and buyers communicate directly with the operator for access,” Dr. Darren Williams, founder and CEO of BlackFog, told The Hacker News. “Matrix Push was first observed at the beginning of October and has been active since then. There’s no evidence of older versions, earlier branding, or long-standing infrastructure. Everything indicates this is a newly launched kit.”

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