Are you planning to take the Security+ exam? If so make sure you're familiar with data handling and labeling policies. As an example, see if you can answer this sample question.
Q. Security personnel recently released an online training module advising employees not to share personal information on any social media web sites that they visit. What is this advice MOST likely trying to prevent?
A. Spending time on non-work-related sites
B. Phishing attack
C. Cognitive password attacks
D.Rainbow table attack
See if you're correct, and view the full explanation here.