LinkedIn Intro is a shim that accesses your email. It hooks directly into iOS7’s mail application on your iPhone. LinkedIn currently support Gmail, Google Apps, Yahoo! Mail, AOL Mail, and iCloud. To remove LinkedIn Intro, you’ll need to first remove the mail account, and then remove the associated profiles. The EFF and a privacy commissioner (from anywhere) would see this as a beneficial piece of software. It is incumbent upon you to take a stand and decide how your data is used.”]
Source: https://www.csoonline.com/article/2136185/linkedin-intro–data–meet-security-issues.html