Category: Uncategorized

Researchers at California Institute of Technology (Caltech) and a research-oriented branch of the University of Quebec have used ultra-short laser pulses to invent world’s fastest camera. This camera is capable of taking a mind-blowing 10 trillion shots per second. A tightly focused laser beam is visible to the human eye but filming a laser pulse moving through air is too fast for the human eye to pick on. Continue reading

The Venusian surface was a subject of speculation until some of its secrets were revealed by planetary science in the 20th century. Today, Venus is not a dream destination for aspiring space tourists, as revealed by numerous missions in the last few decades. The planet is not only hot enough to melt lead, but it also rains sulphuric acid. Continue reading

Stem cells, famous for replenishing the body’s stockpile of other cell types throughout life, may have an additional, unforeseen ability to cache memories of past wounds and inflammation. New studies in the skin, gut and airways suggest that stem cells, often in partnership with the immune system, can use these memories to improve the responses of tissues to later injuries and pathogenic assaults. Continue reading

In 2004, the Italian theoretical cosmologist Valeria Pettorino wrote her doctoral thesis on “dark energy in generalized theories of gravity.” As a side project, she translated the opening lines of Dante’s Divine Comedy into a geometry problem. Continue reading

Have you ever sat in a math classroom and wondered, “When will I ever use this?” You might have asked yourself this question when you first encountered “imaginary” numbers, and with good reason: What could be less practical than a number described as imaginary? Continue reading

A new proof from the Australian science fiction writer Greg Egan and a 2011 proof anonymously posted online are now being hailed as significant advances on a puzzle mathematicians have been studying for at least 25 years.

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Elliptic curves seem to admit infinite variety, but they really only come in two flavors. That is the upshot of a new proof from a graduate student at Harvard University. Continue reading

Philip Gibbs is not a professional mathematician. So when he wanted a problem to chew on, he looked for one where even an amateur could make a difference. What he found was a challenge that could drive even the most exacting minds mad. In a paper completed earlier this year, Gibbs achieved a major advance on a 100-year-old question that hinges on the ability to accurately measure area down to the atomic scale. Continue reading

In my blog on DemonBot, I discussed how Hadoop YARN exploit attempts were ramping up. In the middle of October, our deception network recorded up to 1.5 million attempts per day. The good news is that the attempt rate steadily slowed down in the second half of last month—though unfortunately not to the point where we should pat ourselves on the back for exposing one of the many malicious campaigns that are taking advantage of exposed Hadoop YARN servers. Continue reading

DDG is a botnet focused on scanning control SSH, Redis databases and OrientDB database servers, and drawing server computing power (Monroe). We first perceived the DDG botnet on October 25, 2017 , and subsequently released reports and reports . A recent report released in 2018-08, was updated to version DDG 3013. Continue reading