Microsoft experts have discovered a new attack technique called Dirty Stream, which allows malicious Android applications to overwrite files in the home directories of other applications. The vulnerability allows attackers to execute arbitrary code on victims’ devices and steal various information from them. The problem affects at least users of the Xiaomi File Manager and WPS Office applications, which have more than 1.5 billion installations. This was reported by the publication BleepingComputer, Day.Az reports with reference to Gazeta.ru.
The vulnerability is due to improper use of Android’s Content Provider system, which manages secure access to structured data that is intended to be shared between different applications. This system uses protective measures, but they can be bypassed by incorrectly implementing custom intents, for example using unvalidated file names and paths in intents.
The Dirty Stream attack allows malicious applications to send a file with a spoofed name using a user intent. As a result, the target application executes or stores the file in a critical directory.
According to researcher Dimitrios Valsamaras, there are a lot of such incorrect implementations, and they affect applications installed on more than four billion devices.
Microsoft has reported this vulnerability to the developers of two applications: Xiaomi File Manager and WPS Office. It is reported that in both cases, the developers quickly responded to the warning and implemented fixes to reduce the risks.
A dangerous virus was found in one of the most popular Xiaomi applications – 2024-05-08 18:22:58
Top Ways to Charge a Smartphone in a Power Outage
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How to charge a smartphone from a laptop
A charged laptop can act as a backup power source for your phone in the event of a power outage.
To charge your smartphone from it, you can use a standard USB cable – plug it into the appropriate port on your computer.
Charging “works” after you connect one device to another via a cable. In this case, the laptop battery can last for several phone charges.
How to charge a smartphone from a car
Car chargers are another way to charge your phone during a power outage.
To do this, you can use a special car charger (adapter) for phones with a USB port connected directly to the cigarette lighter.
It works as a power station – just insert a USB cable into it and connect your smartphone.
In addition, some new cars are found with new wireless charging.
It’s convenient to put your phone in the car (photo: pixabay.com)
How to charge a smartphone using a power bank
Building devices from a power bank is a traditional way to solve the problem of lack of electricity in an apartment or house.
Which power bank to choose? – depends on your needs and abilities. After all, there are several options now on the market. From small devices for one phone charge to powerful models that can even charge laptops.
To charge a smartphone from a power bank, all you have to do is prepare it (charge it) and have the necessary connection cable.
How to charge a smartphone using batteries
Some experts believe that without electricity, you can make a power bank yourself.
It is recommended to “collect” it from batteries, collectors, or even batteries from electronic cigarettes, which will provide a sufficient level of charge for your device.
On average, you will need 8 batteries, tape and paper clips. However, such an experience has one problem – the battery charge does not last long.
How to charge a smartphone from a solar battery
A small solar battery is also ideal for use as a backup power source, as it works both in summer and winter.
It can be a power source not only for a smartphone, but also for other devices. You can install the battery almost anywhere. The main thing is to avoid the shadows.
The solar charger can be with or without a battery. The charging principle depends on this – directly under the sun’s rays (without a battery), or anywhere (if a battery is available).
How to charge a smartphone from a battery
You can also charge your smartphone using a car battery (without a car).
At the same time, some experts believe that this method is not suitable for regularly recharging the device, because it can damage the phone’s battery.
Battery use is recommended as a last resort. To do this, you need to reduce the voltage of the 12 volt battery to the required 5 and connect all the elements of this “circuit” in a reliable way.
How to charge a smartphone from a generator
Relatively small generators are designed specifically for private homes. They are easy to use and allow you not only to recharge a smartphone or other device, but also to use various household appliances without electricity.
To charge your phone from the generator, just turn it on and use a special USB cable.
How to charge a smartphone using a hand charger
A handheld charger or dynamo (for bicycles) with a USB connector converts mechanical energy into electrical energy. In particular, it works when you spin a hand (or a bicycle wheel, if it is a bicycle machine) and “mechanically” produces energy.
By connecting a smartphone to such a device, you will get enough charge level for an emergency.
Such devices are very expensive. It can also be a great way to get some exercise.
Hand charger (photo: hotline.ua)
How to charge a smartphone from a wood burning charger
Unusual wood burning chargers generate energy from “firewood” and allow you to charge not only your phone, but also your tablet, power bank or laptop.
In addition, some models can be used to cook food.
How to charge your smartphone using power tools
If you have cordless power tools in your home, you can charge your smartphone from them.
For example, a battery from a lawnmower, brush cutter, air conditioner, hair dryer, trimmer, hammer drill, drill, screwdriver, grinder, etc. may be suitable for this.
To connect a mobile phone to such a battery, you will need an adapter and a USB cable.
How to charge a smartphone from UPS
An uninterruptible power supply (UPS) with an external battery maintains a certain supply of electricity, even if there is no electricity in the network. This is what allows you to charge your smartphone from it.
According to experts, several different devices (devices) can be connected to this automatic device, also known as uninterruptible power supply, at the same time.
However, such uninterruptible power supplies are usually purchased for laptops or personal computers.
How to charge a smartphone using a speaker or flashlight
A wireless speaker or rechargeable flashlight can “share” a charge with your cell phone. As long as the batteries were charged before the power went out.
It is unlikely that they will provide a long-term charge for a smartphone, but for emergency situations – making a short call or using the Internet to get the latest news – it should be recharged so be enough.
To do this, you must connect your phone to the device using a USB cable.
America failed to stop China’s scientific and technological development
US efforts to control China’s chip technology and block its scientific and technological progress will prove unsuccessful.
According to the report of the foreign news agency, China’s Minister of Commerce Wang Wenthao had a telephone conversation with his American counterpart Raimondo. In his talk, Wang Wenthau detailed US sanctions on third-party exports of lithography machines to China, investigations into the supply chain of processing chips, and sanctions on Chinese companies.
The failure to report the specific consensus reached in the talks shows that the US has not responded positively to China’s serious concerns.
In this regard, experts say that in the near future, the United States will continue to adhere to its wrong practices that violate market rules and its own promises, but will continue to control China’s chip technology and even China’s scientific research. And American efforts to stop technological progress will prove unsuccessful.
At last year’s summit in San Francisco, the Chinese and US presidents reiterated the guiding principles of China-US relations that had been set by the teams of the two sides in consultation since the Bali summit. including that the United States has no intention of “de-coupling” China, hindering China’s economic development, encircling China, or opposing China by strengthening alliances. It’s not just Chinese technology companies that are going further to curb scientific and technological progress.
China itself has restricted US companies’ chip exports, launched an investigation into the mature process chip supply chain, and also barred other countries from exporting lithography machines to China, a practice of unilateral bullying.
So will America’s chip control over China succeed? The clear answer is no.
Advances in science and technology and the success of methods that run counter to the laws of the market have no precedents in the past. Chips are not only high-tech products but also part of the industrial chain and supply chain.
If China, the world’s largest chip application and consumer market, is isolated, American chip companies will face huge economic losses, which will weaken the scale of related technology investment and research, and ultimately American science and technology. The long-term development of the technology will also suffer.
In October last year, the CEOs of the three major US chip companies Intel, Qualcomm and Nvidia went to Washington to try to convince the Biden administration to avoid imposing new restrictions on chip exports to China.
He bluntly said that the US sanctions policy against China has not only failed to achieve the desired results but has also limited the business development of US companies in China.
In accordance with the export regulations of the US Department of Commerce, Nvidia has developed a special edition based on its H100 chip for China and provided samples of the corresponding chips to Chinese customers for testing, but the test results of the corresponding samples did not meet China’s expectations. Not fulfilled.
Other Chinese giants, including Alibaba Group and Tencent, have said that the number of orders placed by Nvidia in 2024 will be much lower than the banned Nvidia high-performance chips, a law of the market.
Second, China’s scientific and technological prowess and the industrious spirit of the Chinese people are the main reasons for the continuous development of China’s science and technology, which constantly surpasses itself and often breaks Western expectations.
During the US Commerce Secretary’s visit to China last year, Huawei surprised the world by releasing a new mobile phone equipped with its high-end chips. Huawei’s achievement of this feat in just three years, despite insurmountable siege and deterrence, once again proves the potential and hidden power of Chinese technology enterprises.
In history, high-yielding hybrid rice, shield machines, high-speed railways, satellite navigation systems, space stations and other development achievements have been achieved in spite of Western siege, oppression and ridicule along the way of each of China’s scientific advances.
Statistics show that by 2023, China will have more than 80,000 international intellectual property applications, leading the world. Over the past two decades, China has trained more than six million engineers, and today China has the largest number of engineers in the world.
America’s superiority in science and technology, including chips, will not last forever, American chip control over China will only encourage China to improve itself in science and technology. The success of China’s high-end chips will take time, but it won’t be far off.
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2024-05-08 17:24:48
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America failed to stop China’s scientific and technological development