Kiran Upadhyay

Gmail supports encryption in transit using Transport Layer Security (TLS), and will automatically encrypt your incoming and outgoing emails if it can. Some other email services don't support TLS, and therefore messages exchanged with these services will not be TLS encrypted. In Gmail on your computer, you can check that a message you’ve received was sent over TLS by clicking the small down arrow at the top-left of the email and reading the message details. If you see a red open padlock icon  on a message you’ve received, or on one you're about to send, it means that the message may not be encrypted. If you see the red padlock while composing a message Don’t send confidential material, like tax forms or contracts, to that email address. If you see the red padlock when viewing a received message This message was sent unencrypted. In most cases, there’s nothing you can do. If it contained particularly sensitive content, you should let the sender know and they can cont...

Air conditioning is one of the biggest costs in running data centers. Traditional data centers use as much electricity for cooling as they do for running the actual IT equipment. Accordingly, much of the innovation seen in the high-density cloud server space has been to develop data centers that are cheaper to cool and hence cheaper to run. With its much higher heat capacity than air, water has become the coolant of choice, pumped around and between the computers to transport their heat outside. Microsoft has demonstrated an experimental prototype of a new approach: instead of pumping water around the data center, put the data center in the water. Project Natick is a research project to build and run a data center that's submerged in the ocean. The company built an experimental vessel, named the Leona Philpot, and deployed it on the seafloor about 1 kilometer off the Pacific coast. It ran successfully from August to November last year. Read More

In an effort to offer healthier menu items, McDonald’s has unveiled a new salad with a “nutrient-rich lettuce blend with baby kale,” shaved parmesan, and chicken (grilled or fried). Like many fast-food salads, it may seem like a healthy option at first, but it’s not. The salad, when paired with the restaurant’s Asiago Caesar Dressing, packs more fat, calories, and salt than a double Big Mac—that’s a sandwich with four beef patties. While the nutrition check on a McDonald’s item may not come as a shock, the unhealthy salad option falls into a bigger trend of restaurant meals—fast food or not, eating out is hard on your waistline and health. In one recent study, researchers found that 92 percent of large-chain, local-chain, and mom-and-pop restaurants served meals that exceeded the calorie intake for a healthy meal. The study included 364 meals from restaurants in three cities: Boston, San Francisco, and Little Rock, Arkansas. The meals covered American, Chinese, Greek, Indian, It...

LIVINGSTON, La.—The rain began to fall as Joe Giaime and I scrambled down a lonely rise, back toward the observatory’s main building. It wasn’t so much rain as a hard mist, characteristic of the muggy weather southern Louisiana often sees in January when moisture rolls inland from the Gulf of Mexico. As gray clouds fell like a shroud over the loblolly pines all around us, Giaime mused, “Well, I guess you’ve already gathered that we’re in the middle of nowhere." Middle of nowhere happens to be ground zero in the search for gravitational waves, which were first posited by Albert Einstein a century ago and may soon become one of the hottest fields in science. Livingston is remote in terms of geography, but as humans scan the heavens for gravitational waves this forest is practically the center of the physics universe. Because of general relativity, we understand that large masses curve spacetime, kind of like standing in the middle of a trampoline distorts the fabric. When mas...

Today was a huge day for Alphabet — the first day it finally broke out its “other bets” in its earnings report — and boy did the company not disappoint. The company smashed expectations on both ends, bringing in $21.3 billion in revenue and earnings of $8.67 per share. Analysts were expecting earnings of $8.09 on $20.8 billion in revenue. And with that, Alphabet became the most valuable publicly-traded company in the world — coming in at a market cap $558 billion after jumping about 8% after the company reported its fourth-quarter earnings, and passing Apple, which sits at a market cap of $535 billion. There weren’t any huge surprises on the earnings call that caused the stock to dip, but its ranking still depends on whether or not the company gives up those gains in extended trading. Either way this is a significant moment for the company and the technology market in general. Alphabet had a huge opportunity to finally pass Apple as the most valuable company in the world. T...

Shodan, a search engine for the Internet of Things (IoT), recently launched a new section that lets users easily browse vulnerable webcams. The feed includes images of marijuana plantations, back rooms of banks, children, kitchens, living rooms, garages, front gardens, back gardens, ski slopes, swimming pools, colleges and schools, laboratories, and cash register cameras in retail stores, according to Dan Tentler, a security researcher who has spent several years investigating webcam security. "It's all over the place," he told Ars Technica UK. "Practically everything you can think of." We did a quick search and turned up some alarming results: The cameras are vulnerable because they use the Real Time Streaming Protocol (RTSP, port 554) to share video but have no password authentication in place. The image feed is available to paid Shodan members at images.shodan.io. Free Shodan accounts can also search using the filter port:554 has_screenshot:true. ...

ZIKA,  the mosquito-spread virus sparking outbreaks across the Western Hemisphere and suspected of causing birth defects and neurological problems, has been transmitted through sexual contact in the United States, the Dallas County Health and Human Services (DCHHS) reported Tuesday. A patient was infected via sexual contact with a person who had recently traveled to Venezuela, a country currently experiencing a Zika outbreak, the health department said. The Centers for Disease Control and Prevention confirmed the infection. There is still no evidence that Zika is spreading in US mosquito populations. “Now that we know Zika virus can be transmitted through sex, this increases our awareness campaign in educating the public about protecting themselves and others,” Zachary Thompson, DCHHS director, said in a press release. There had been anecdotal reports that Zika could spread through sexual contact, including a 2011 report that a Colorado man returning from a trip to Senegal...