【中国私企火箭发动机】
中国航天私企蓝箭航天公司的技术人员正在组装「天鹊A」液氧甲烷发动机，浙江湖州。「天鹊A」发动机是蓝箭航天公司自主研制的新一代液氧甲烷火箭发动机，分为12A、13A 和15A 三个型号，最大真空推力达85吨，主要用于朱雀二号商业运载火箭的动力系统，可实现燃烧无积碳和重复使用。这款火箭发动机已进入批量生产和交付阶段，预计2024年产量达到100台。 source
BY 每日环球视野
Telegram has exploded as a hub for cybercriminals looking to buy, sell and share stolen data and hacking tools, new research shows, as the messaging app emerges as an alternative to the dark web.An investigation by cyber intelligence group Cyberint, together with the Financial Times, found a ballooning network of hackers sharing data leaks on the popular messaging platform, sometimes in channels with tens of thousands of subscribers, lured by its ease of use and light-touch moderation.
Launched in 2013, Telegram allows users to broadcast messages to a following via “channels”, or create public and private groups that are simple for others to access. Users can also send and receive large data files, including text and zip files, directly via the app.The platform said it has more than 500m active users, and topped 1bn downloads in August, according to data from SensorTower.每日环球视野 from us