– 3 лекции по теории множеств от аспиранта кафедры общей математики факультета ВМК МГУ; – 3 практических задания для закрепления материала и ссылки на дополнительные материалы – лекция по комбинаторике от кандидата физико-математических наук, доцента факультета ВМК МГУ
– 3 лекции по теории множеств от аспиранта кафедры общей математики факультета ВМК МГУ; – 3 практических задания для закрепления материала и ссылки на дополнительные материалы – лекция по комбинаторике от кандидата физико-математических наук, доцента факультета ВМК МГУ
Telegram auto-delete message, expiring invites, and more
elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.
Why Telegram?
Telegram has no known backdoors and, even though it is come in for criticism for using proprietary encryption methods instead of open-source ones, those have yet to be compromised. While no messaging app can guarantee a 100% impermeable defense against determined attackers, Telegram is vulnerabilities are few and either theoretical or based on spoof files fooling users into actively enabling an attack.
Библиотека собеса по Data Science | вопросы с собеседований from pl
