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The gang, which calls itself RansomHub, published several files on its dark web leak site containing personal information about patients across an array of documents, some of which included internal files related to Change Healthcare. RansomHub said it would sell the stolen data unless Change Healthcare paid a ransom.

In a statement provided to TechCrunch, UnitedHealth spokesperson Tyler Mason confirmed the company paid the cybercriminals. “A ransom was paid as part of the company’s commitment to do all it could to protect patient data from disclosure.” The company would not confirm the amount it paid.

RansomHub is the second gang to demand a ransom from Change Healthcare. The health tech giant reportedly paid $22 million to a Russia-based criminal gang called ALPHV in March, which then disappeared, stiffing the affiliate that carried out the data theft out of their portion of the ransom.

Researchers at the University of Toronto have discovered a DNA repair mechanism that advances understanding of how human cells stay healthy, and which could lead to new treatments for cancer and premature aging.

The study, published in the journal Nature Structural and Molecular Biology, also sheds light on the mechanism of action of some existing chemotherapy drugs.

“We think this research solves the mystery of how DNA double-strand breaks and the nuclear envelope connect for repair in human cells,” said Professor Karim Mekhail, co-principal investigator on the study and a professor of laboratory medicine and pathobiology at U of T’s Temerty Faculty of Medicine.

Unlike electrons, particles of light are uncharged, so they do not respond to magnetic fields. Despite this, researchers have now experimentally made light effectively “feel” a magnetic field within a complicated structure called a photonic crystal, which is made of silicon and glass.

Within the crystal, the light spins in circles and the researchers observed, for the first time, that it forms discrete energy bands called Landau levels, which parallels a well-known phenomenon seen in electrons.

This finding could point to new ways to increase the interaction of light with matter, an advance that has the potential to improve photonic technologies, like very small lasers.

The world’s most advanced solar sail spacecraft began its odyssey today at 23:32 GMT as it lifted off atop a Rocket Lab Electron launcher from Launch Complex 1 in Mahia, New Zealand. It was one of two payloads on the Beginning Of The Swarm mission.

Though it’s only the size of a microwave oven, NASA’s Advanced Composite Solar Sail System (ACS3) can unfurl a microscopically thin plastic sail in about 25 minutes to cover an area of 860 ft² (80 m²) with a boom unfolding from the size of a hand to 23-ft (7-m) long. It’s not the first solar sail to be sent into space, but its boom made of lightweight polymer composites and specially configured to stow flat is a major step in making such sails lighter and more stable.

Continue reading “World’s most advanced solar sail rockets into space” »

An intricate simulation performed by UT Southwestern Medical Center researchers using one of the world’s most powerful supercomputers sheds new light on how proteins called SNAREs cause biological membranes to fuse.

Their findings, reported in the Proceedings of the National Academy of Sciences, suggest a new mechanism for this ubiquitous process and could eventually lead to new treatments for conditions in which membrane fusion is thought to go awry.

“Biology textbooks say that SNAREs bring membranes together to cause fusion, and many people were happy with that explanation. But not me, because membranes brought into contact normally do not fuse. Our simulation goes deeper to show how this important process takes place,” said study leader Jose Rizo-Rey (“Josep Rizo”), Ph.D., Professor of Biophysics, Biochemistry, and Pharmacology at UT Southwestern.

Flamethrowers are not specifically regulated in 48 US states, although general product liability and criminal laws may still apply to their use and sale. They are not considered firearms by federal agencies. Specific restrictions exist in Maryland, where flamethrowers require a Federal Firearms License to own, and California, where the range of flamethrowers cannot exceed 10 feet.

Even so, to state the obvious, flamethrowers can easily burn both things and people, starting fires and wreaking havoc if not used safely. Accordingly, the Thermonator might be one Christmas present you should skip for little Johnny this year.

The tiny colons were grown from mouse stem cells, but human versions could one day be used to test new drugs for colorectal cancer, scientists say.

A new–and increasingly common–role helps guide generative AI.