James' World 2

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While Google develops its open-source Android mobile operating system, the “original equipment manufacturers” who make Android smartphones, like Samsung, play a large role in tailoring and securing the OS for their devices. But a new finding that Google made public on Thursday​ reveals that a number of digital certificates used by vendors to validate vital system applications were recently compromised and have already been abused to put a stamp of approval on malicious Android apps.As with almost any computer operating system, Google’s Android is designed with a “privilege” model, so different software running on your Android phone, from third-party apps to the operating system itself, are restricted as much as possible and only allowed system access based on their needs. This keeps the latest game you’re playing from quietly collecting all your passwords while allowing your photo editing app to access your camera roll, and the whole structure is enforced by digital certificates signed with cryptographic keys. If the keys are compromised, attackers can grant their own software permissions it shouldn’t have. 

Google said in a statement on Thursday that Android device manufacturers had rolled out mitigations, rotating keys, and pushing out the fixes to users’ phones automatically. And the company has added scanner detections for any malware attempting to abuse the compromised certificates. Google said it has not found evidence that the malware snuck into the Google Play Store, meaning that it was making the rounds via third-party distribution. Disclosure and coordination to address the threat happened through a consortium known as the Android Partner Vulnerability Initiative.

“While this attack is quite bad, we got lucky this time, as OEMs can quickly rotate the affected keys by shipping over-the-air device updates,” says Zack Newman, a researcher at the software supply-chain security firm Chainguard, which did some analysis of the incident. 

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Photograph: Thiago Prudencio/Getty Images

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[Photo: Getty Images]

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DuckDuckGo released a new privacy tool for Android Wednesday that will help protect you from the companies harvesting personal data through your apps. The new App Tracking Protection feature, now available in beta in the DuckDuckGo for Android app, will let users take advantage of some of the privacy protections already enjoyed by iPhone users.

The company’s App Tracking Protection tool doesn’t just block the data collection, it also gives you a firsthand look at what information apps are trying to harvest and where they’re trying to send it. DuckDuckGo spent the last year testing the feature with real users. The feature is easy to use. All you have to do is install the DuckDuckGo app, open Settings, select “App Tracking Protection,” and follow the onscreen instructions.

According to Peter Dolanjski, director of product at DuckDuckGo, people had no idea how bad the data collection really was. “People were absolutely baffled, not just at the number of requests apps are making but also the kind of data involved,” he said.

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Adria Malcolm for The New York Times

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For context: this is someone whose job involves a fair bit of futzing around with databases but who I wouldn’t describe as particularly tech-minded. He works in higher education, studied English at university, and never formally learned to code. But here he was, not only playing around with an experimental AI chatbot but using it to do his job faster after only a few days’ access.

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The effect of exercise on health is profound. It can protect you from a range of conditions, including heart disease, type 2 diabetes, and some cancers. But the type and amount of exercise you should do changes as you age. To ensure that you are doing the right type of exercise for your age, follow this simple guide.

Childhood and Adolescence

In childhood, exercise helps control body weight, builds healthy bones, and promotes self-confidence and healthy sleep patterns. The government recommends that children should get at least one hour of exercise a day.

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Photo by zhu difeng/Shutterstock.

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