1. insider - Noun
2. insider - Adjective
an officer of a corporation or others who have access to private information about the corporation's operations
Source: WordNetNo woman is really an insider in the institutions fathered by masculine consciousness. Adrienne Rich
You can be a rank insider as well as a rank outsider. Robert Frost
Social engineering is using manipulation, influence and deception to get a person, a trusted insider within an organization, to comply with a request, and the request is usually to release information or to perform some sort of action item that benefits that attacker. Kevin Mitnick
Insider trading is hard to prove. To be convicted, a person must have bought or sold a stock based on material information that is both unknown to the general public and likely to have had an important effect on a company's stock price. Alex Berenson
Outsiders often have an insight that an insider doesn't quite have. Diane Abbott
I think you only really feel like an outsider if you've been an insider. Sade Adu