Halloween is coming and the temptation is to put on some terrifying plastic contact lenses. Science has its reservations

Costumes, scares, moviespassages of terror and also the occasional party is undoubtedly something that we will see in this Halloween nightalthough among all these elements there is a protagonist that can undoubtedly become a risk to our health: colored cosmetic contact lenses. The color of the eyes. To dress up in the most faithful way to the character we want to resemble, eye color may be essential. In the case of Halloween, it may be interesting to have them red or some other color that conveys a feeling of fear, such as those of the famous ‘Valak’ or ‘The Nun‘. But it can undoubtedly be a serious problem for our health. And on many occasions we want something that is economical to be able to dress up and we can choose to buy these contact lenses in a store that is not specialized in these products such as a bazaar. All because to wear it for a while at night you are not going to invest a large amount of money in a special contact lens. But we forget that we are buying a product that will be in contact with our eyes, which are really delicate. Doubts. Ophthalmologist Damián Teillard through his TikTok account It alerts us to all the problems that can arise, such as infections, corneal abrasions, blurred vision or eye fatigue when colored contact lenses are used without adaptation, with poor hygiene or throughout the night. That is why you are committed to making the purchase at an authorized optician to try them the days before. The scientific evidence. But beyond what this ophthalmologist says, we also find a large amount of scientific literature that documents all of these problems. An exampleor we have in the magazine eye that reviews these cosmetic contact lenses and demonstrates the appearance of severe microbial keratitis associated with these products that are purchased without health control. More cases. We have another example in the TFOS report on the impact of contact lenses on the ocular surface, details that their inappropriate use (sleeping with them for example) damages the epithelium, alters the tear film and increases the risk of infection. Something quite common in a situation where many people opt for these contact lenses without having ever worn this product before, so they lack the recommendations to avoid problems when wearing them. In this way, the evidence on periocular cosmetics and ocular surface underlines that makeup and formulations around the eye They can irritate, destabilize the tears and increase discomfort if combined with contact lenses. Elevation of risk. With all this, we can see how buying contact lenses in bazaars or unauthorized websites that have poor quality produces a significant injury that can end in visual loss in the most severe cases. Among these complications we see the keratitis, conjunctivitis or corneal abrasions and ulcers that require ophthalmological treatment in many emergency cases. How to use it correctly. In order to avoid all these problems, the crucial thing is to purchase them from authorized opticians and with the advice of ophthalmological professionals. But you must also follow the basic recommendations for contact lenses, such as sleeping with them, putting them on with clean hands, not sharing them with several people, and always applying makeup after putting on the lenses and removing makeup with them to protect the ocular surface. With all this you can achieve a night of terror but without the eye ending up suffering from the misuse of contact lenses that we find in any bazaar or on the internet. Images | Grégoire Hervé-Bazin In Xataka | There is nothing that makes blue eyes blue. If we want to understand why, we have to turn to physics

These are Sihoo’s Halloween offers

Those of us who spend many hours sitting know more than enough how important it is to choose the seat we use well. If we are looking for a new chair for our desk, we have a great opportunity with Sihoo’s new Halloween sales. These allow us tosave us up to 250 euros on some of their best chairsquite a bargain. We tell you more about this promo. Discounts with Sihoo’s Halloween sales This manufacturer has chairs that are very interesting and fit perfectly in any room or desk. The Halloween sales, which are already available, will last precisely until this holiday ends, that is, until October 31. Taking this into account, we still have a few days left to go for one of these chairs. The best part is, logically, the discounts. It will depend on the model we choose, but there are active discounts right now on the Sihoo website that go up to 250 euros. Also, if in our purchases we use the code ‘SihooXT6%‘We will get an additional 6% discount that will allow us to get one of these chairs at a great price. Sihoo Doro C300 As the first option in the Sihoo catalog we place one of its best-selling models, the Sihoo Doro C300. This model stands out for many things, its lumbar area possibly being one of its main key points. It has a body tracking system thanks to which we will always have this area well supported, regardless of how we sit or move. In addition to having a very elegant design, it also comes with a high quality mesh fabric. It is a material that better resists stains and the passage of time, and is also perfect when it is hot. In addition, it has 4D armrests that we can adjust very easily to place them according to our needs. The normal price of this chair without promotion is 309.99 euros, but right now we have it reduced to 269.99 euros (there is also a version with footrest that costs 299.99 euros). If, as we said before, we use the code ‘SihooXT6%‘, the price will remain more than attractive 253.79 euros. The price could vary. We earn commission from these links Sihoo Doro S100 The next chair that we put in this selection is the Sihoo Doro S100. It is a model with a very interesting ergonomic design, no matter if we want it to work, study or even play, avoiding gaming chairs. In this case, its lumbar area is divided into a double support that is adjustable and independent of the backrestwhich allows it to be configured to the millimeter. This model, which is also made of mesh fabric, has a backrest that can be reclined up to 135 degrees and a 5-wheel base that is very easy to move around the room. Can be adjusted in height and its armrests are configurable in 4Dso we can adjust them in four directions. This Sihoo Doro S100, like the previous one, has a RRP of 309.99 euros, but right now it is reduced to 269.99 euros. If we use the code ‘SihooXT6%‘we can lower the price even further to 253.79 euros. The price could vary. We earn commission from these links Sihoo M59AS Finally, we have the Sihoo M59AS, a slightly cheaper option than the previous chairs, but which does not have much to envy of them either. Like the previous one, this model also has double lumbar support and armrests that, in addition to being configurable in 3D, can be completely folded down in case we want to sit without them. In addition to having mesh fabric, it also comes with a double-jointed headrest, which allows you to adjust it from top to bottom, as well as its inclination and position. In this case, your support can be folded up to an angle of 125 degrees and the cushion is shaped like a saddle to have more space and to correctly distribute pressure between hips and thighs. The RRP of this chair is 239.99 euros, but Sihoo’s Halloween sales leave it at 214.99 euros. Of course, on this occasion we can also use the code ‘SihooXT6%‘, so its price would remain at 202.09 euros. The price could vary. We earn commission from these links Some of the links in this article are affiliated and may provide a benefit to Xataka. In case of non-availability, offers may vary. Images | sihoo In Xataka Selection | Which chair to work and play to buy: recommendations for ergonomics, comfort and 13 gaming and office chairs from 80 euros In Xataka | How to set up your home office: buying guide for stands, monitors and other peripherals, cables, headphones and more

A North Korean spy tried to infiltrate a cryptocus. I didn’t expect you to ask him for Halloween

The cinema, the video games and the stories of double agents They have been showing the image of the spies as riskylonely and, sometimes, lustful. The reality is that this field work has gone to the background in an era in which cyberspage and labor infiltration prevails. China and North Korea are protagonists from time to time when we talk about this matter and, sometimes, the cover is so rough that a single question is enough to uncover the cake: What is done on Halloween. Steven Scott Jr. Smith. That name is the most American, the equivalent of José Pérez in Spain. Steven asked for work in Kraken, a bank and exchango of American cryptocurrencies and, from the first minute of the test, something failed. As we read in FortuneSteven, who claimed to have 11 years of experience as a software engineer in companies like Cisco and two years living in Houston, Texas, connected to the video call with a different name than the one he showed in his curriculum and changed it quickly. He also answered simple questions with hesitation and, for more complex ones, it took something more to answer, as if he were talking to someone else who smeared the answers. Cornering the spy. That alerted the recruiters, and that is where they began to ask questions that had nothing to do with work, since they hid another intention: catch what they thought it was a spy trying to sneak into their system. The interview was conducted on October 31, Halloween party in the United States, and recruiters asked three key questions. Given the comment that that night it would be necessary to close before because there would be children calling the doors of the houses, Steven commented that he would not do “special” if they called his. Among the interests that reflected in the curriculum was the food. One of the recruiters told him that he would go to Houston in a few days and that if he could recommend a city restaurant. Steven looked around, smiled and said “there is nothing special here.” Rare, considering that, in a city of 2.3 million inhabitants, at least one good restaurant must be. The third request was to show him an identification. Steven commented that he did not have it at hand, but after a few minutes, he shared a photo of his driving card with an address that is more than 480 kilometers from Houston. In the following video of CBS you can see both the license and the question of the restaurants: Culture of productive paranoia. Kraken herself tells the story in her blog, detailing that they realized that something was going wrong and continued with the interview with an objective: to study their focus to try to extract details about their identity. The companies that are dedicated to the crypto have had recent robberies and Nick Perceco problems, one of Kraken’s security responsible, states that these attacks are not an exclusive problem of companies such as their own, but a global threat. It also points three keys to this recent espionage/robbery strategy: Not all attackers force the entrance, but try to enter through the main door of the companies, applying as employees. The generative AI facilitates deception, since it is used to pass the initial tests such as the curriculum or the photo, so the interviews seem key with verification questions that avoid predictable patterns. Halloween’s example or restaurant recommendation, for example. Finally, it is key to have a productive paranoia culture. They affirm that security is not only the responsibility of the recruitment and security equipment of companies, but that it should be a more global mentality. It is not isolated. When Kraken’s team investigated Steve’s operational history, he discovered interesting things. For example, I used a Mac desktop located in a shared data center. It was connected using a VPN to hide both the location and the network activity and its curriculum was linked to a github profile in which a mail address compromised in a data filtration was included. This agrees with previous research and discoverieswith spies that use that same proceed when connected using VPN to simulate that they are in a direction in the United States, but really being in North Korea and China. And they are not only trying to sneak into American companies: Europe does not get rid. Missile industry. The suspicion of researchers? Double. On the one hand, there are spies that directly steal in their companies. An example are cases of crypto companies. But another case has to do with the sending of its full salary to the North Korean government to finance the arms industry. Famous is the case by Christina Marie Champman in Arizona. A farm of remote computers operated from which the attackers simulate that they are on American soil. As noted CNNusing that network, 6.8 million dollars were achieved for, according to Bloombergfinance the North Korean nuclear weapons program. China does not get rid, but it has another approach. And not only North Korea is interested in sneaking into Western companies: he has also caught China on occasion. The objective, however, is different: while some seek funds for their arms industry, others want knowledge for the development of the chips industry. At the end of 2003, ASML (the European company that creates the most advanced machines to create avant -garde semiconductors) denounced the theft of confidential information, suspecting that one of its former employees andNt added business secrets to Huawei. Another spy was also accused of stealing SK Hynix information, DE new, for Huawei. It is a major problem for the West, but also … for China. In mid -2024, the United States sent an alert message to ASML and the rest of the Netherlands universities: “Beware of Chinese students”And this is something that obviously puts a target on all students, also about the legitimate ones. Images | Xataka with chatgpt In Xataka | North Korea’s military tactics that prevents defections. … Read more

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