کانون نجوم دانشگاه شهیدبهشتی برگزار می‌کند: 📚سلسله جلسات آنلاین کتاب‌‌خوانی📚
📙 کتاب واقعیت ناپیدا 👤 نویسنده: کارلو روولی 🕰 زمان: چهارشنبه‌ها، ساعت ۵ تا ۶ عصر ⏳ شروع از ۳ مردادماه ۱۴۰۳ 💻 در بستر گوگل‌میت لینک جلسه در ساعت مقرر در کانال کانون نجوم شهیدبهشتی قرار خواهد گرفت.
کانون نجوم دانشگاه شهیدبهشتی برگزار می‌کند: 📚سلسله جلسات آنلاین کتاب‌‌خوانی📚
📙 کتاب واقعیت ناپیدا 👤 نویسنده: کارلو روولی 🕰 زمان: چهارشنبه‌ها، ساعت ۵ تا ۶ عصر ⏳ شروع از ۳ مردادماه ۱۴۰۳ 💻 در بستر گوگل‌میت لینک جلسه در ساعت مقرر در کانال کانون نجوم شهیدبهشتی قرار خواهد گرفت.
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. Telegram does offer end-to-end encrypted communications through Secret Chats, but this is not the default setting. Standard conversations use the MTProto method, enabling server-client encryption but with them stored on the server for ease-of-access. This makes using Telegram across multiple devices simple, but also means that the regular Telegram chats you’re having with folks are not as secure as you may believe. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. But the Ukraine Crisis Media Center's Tsekhanovska points out that communications are often down in zones most affected by the war, making this sort of cross-referencing a luxury many cannot afford. Update March 8, 2022: EFF has clarified that Channels and Groups are not fully encrypted, end-to-end, updated our post to link to Telegram’s FAQ for Cloud and Secret chats, updated to clarify that auto-delete is available for group and channel admins, and added some additional links.
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