zero-day
adj.— «0day is the list of vulnerabilities and exploits which have not been publicly acknowledged (SecurityFocus) or patched (vendors). No one knows about them. Since they’re not public knowledge, no one shares them.» —“A peek at script kiddie culture” by Andrew D. Kirch NewsForge Mar. 5, 2004. (source: Double-Tongued Dictionary)
Further reading
How do you transform ancient Chinese script for use in the modern age? English uses a keyboard with just 26 letters, but the first Chinese typewriter looked like a small table under a huge disk with more than 4,000 characters. A new book chronicles...
The Merriam-Webster.com dictionary now includes an entry for TL;DR, also rendered as TLDR. It’s a speedy way of dismissing overlong text or introducing a shortened version of something. This useful locution also inspired AI;DR, short for AI;didn’t...