An anonymous reader quotes a report from IEEE Spectrum: Researchers have demonstrated a new algorithm for detecting so-called deepfake images — those altered imperceptibly by AI systems, potentially for nefarious purposes. Initial tests of the algorithm picked out phony from undoctored images down to the individual pixel level with between 71 and 95 percent accuracy, depending on the sample data set used. The algorithm has not yet been expanded to include the detection of deepfake videos.

One component of the algorithm is a variety of a so-called “recurrent neural network,” which splits the image in question into small patches and looks at those patches pixel by pixel. The neural network has been trained by letting it examine thousands of both deepfake and genuine images, so it has learned some of the qualities that make fakes stand out at the single-pixel level. Another portion of the algorithm, on a parallel track to the part looking at single pixels, passes the whole image through a series of encoding filters — almost as if it were performing an image compression, as when you click the “compress image” box when saving a TIFF or a JPEG. These filters, in a mathematical sense, enable the algorithm to consider the entire image at larger, more holistic levels. The algorithm then compares the output of the pixel-by-pixel and higher-level encoding filter analyses. When these parallel analyses trigger red flags over the same region of an image, it is then tagged as a possible deepfake. The deepfake-detecting algorithm has been described in a recent IEEE Transactions on Image Processing.

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Source: Slashdot – Researchers Demonstrate Two-Track Algorithm For Detecting Deepfakes

Millions of first-time internet consumers from the Ivory Coast to India and Indonesia are connecting to the web on smart feature phones that cost only about $25. “[T]hese hybrid phones, fueled by inexpensive mobile data, provide some basic apps and internet access in addition to calling and texting,” the Wall Street Journal reports. From the report: While global smartphone sales began sliding last year as markets became saturated, smart feature phone shipments tripled to around 75 million from 2017, according to research firm Counterpoint. Some 84 million are likely to be shipped this year. Even as rich nations start to roll out 5G technologies, some 3.4 billion people around the world remain cut off from the internet, according to We Are Social, another research firm. Most of them already use traditional, unconnected mobile phones, meaning they can easily make the transition to similarly shaped devices capable of high-speed web connections.

Smart feature phones aren’t only inexpensive, but they also have physical keypads that are less intimidating than touch screens for those new to the technology. Meanwhile, their batteries last for days, a bonus in places where electricity is unreliable. There is a trade-off for the low price. The devices typically have slower and less powerful components, only basic cameras and their screens are usually just a few inches in size, factors that contribute to their longer battery life. There also are fewer apps available for smart feature phones.

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Source: Slashdot – The Hottest Phones For the Next Billion Users Aren’t Smartphones

Google researchers have shared details of five flaws in Apple’s iMessage software that could make its devices vulnerable to attack. The BBC reports: In one case, the researchers said the vulnerability was so severe that the only way to rescue a targeted iPhone would be to delete all the data off it. Another example, they said, could be used to copy files off a device without requiring the owner to do anything to aid the hack. Apple released fixes last week. But the researchers said they had also flagged a sixth problem to Apple, which had not been rectified in the update to its mobile operating system.

Apple’s own notes about iOS 12.4 indicate that the unfixed flaw could give hackers a means to crash an app or execute commands of their own on recent iPhones, iPads and iPod Touches if they were able to discover it. Apple has not commented on this specific issue, but has urged users to install the new version of iOS, which addresses Google’s other discoveries as well as a further range of glitches and threats. One of the two Google researchers involved – Natalie Silvanovich – intends to share more details of her findings at a presentation at the Black Hat conference in Las Vegas next month.

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Source: Slashdot – Google Reveals Fistful of Flaws In Apple’s iMessage App

An anonymous reader quotes a report from Ars Technica: AT&T is eliminating the DirecTV Now brand name it uses for its struggling Internet-based TV service. DirecTV Now will become “AT&T TV Now” later this summer, AT&T announced today. DirecTV Now (the future “AT&T TV Now”) offers a bundle of linear TV channels, similar to traditional cable or satellite services, and AT&T said its core offering won’t be changed. AT&T’s 2015 purchase of DirecTV, the nation’s largest satellite TV network, doesn’t seem to be paying off as AT&T hoped. AT&T launched DirecTV Now — a stripped-down, online-only version of DirecTV — in 2016, and it was immediately plagued by multiple outages, unexpected blackouts of live local sports games, and missing channels.

While the technical problems got sorted out, AT&T’s subscriber gains were short-lived. As we wrote last week, AT&T lost 946,000 TV subscribers in Q2 2019 after announcing a series of price increases. The 946,000-subscriber loss consisted of a net loss of 778,000 subscribers in AT&T’s DirecTV satellite and U-verse wireline TV services, as well as 168,000 lost subscribers to DirecTV Now. The losses are much bigger when you look at the past year instead of just the past three months. Including all three services, AT&T’s total number of video subscribers dropped from 25.4 million in Q2 2018 to 22.9 million in Q2 2019. DirecTV Now subscribers dropped from 1.8 million to 1.3 million in the past year. The report notes that the satellite TV service will still keep the DirecTV name, at least for the time being. AT&T said the actual DirecTV Now service will remain the same despite the name change. “Our DirecTV Now subscribers will simply need to re-accept the terms of service and their streaming will continue as usual without interruption,” AT&T said.

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Source: Slashdot – AT&T Kills DirecTV Now Brand Name As TV Subscribers Leave In Droves