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1 декабря 1918 года в Москве был основан Центральный аэрогидродинамический институт – ЦАГИ им. профессора Николая Егоровича Жуковского. Во главе института стоял Н.Е. Жуковский, его помощник и начальник авиационного отдела - Андрей Николаевич Туполев.

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1 декабря 1918 года в Москве был основан Центральный аэрогидродинамический институт – ЦАГИ им. профессора Николая Егоровича Жуковского. Во главе института стоял Н.Е. Жуковский, его помощник и начальник авиационного отдела - Андрей Николаевич Туполев.

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Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders. In a message on his Telegram channel recently recounting the episode, Durov wrote: "I lost my company and my home, but would do it again – without hesitation." On December 23rd, 2020, Pavel Durov posted to his channel that the company would need to start generating revenue. In early 2021, he added that any advertising on the platform would not use user data for targeting, and that it would be focused on “large one-to-many channels.” He pledged that ads would be “non-intrusive” and that most users would simply not notice any change. During the operations, Sebi officials seized various records and documents, including 34 mobile phones, six laptops, four desktops, four tablets, two hard drive disks and one pen drive from the custody of these persons. Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp.
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