Is it insider trading is if you don’t do anything with the information?
As long as you don't use or share them, you're fine.
Also, odds are the SEC is punching the names of anyone who makes it big day trading into some NSA type database and if they know anyone who would have had the information that link will be followed up on.
Yes, and they're quite adept at it even if you don't think you're leaving a trace. For example: https://www.sec.gov/news/press-release/2014-55
Lots of history seems to disagree, with only the occasional person having bad luck.