- Confidential and Proprietary - Luminar Annual Threat Landscape Report Page 13 media, called “articles.” Authors can upload images and videos to the page, with a limit of 5 MB. When an author adds links to YouTube, Vimeo, or Twitter, the service allows them to embed their content directly in the article. 31 31 https://techcrunch.com/2016/11/22/telegram-telegraph/