CEO sends a mail giving his views on the status of the company and the company's future strategy and the CEO's vision and the employee's part in it. The mail should be classified as

An employee caught temporarily storing an MP3 file in his workstation will not receive an IR.

Implement plan on a test basis - this comes under which section of PDCA

You receive the following mail from the IT support team: Dear User,Starting next week, we will be deleting all inactive email accounts in order to create spaceshare the below details in order to continue using your account. In case of no response, Name:
Email ID:
Password:
DOB:
Kindly contact the webmail team for any further support. Thanks for your attention.
Which of the following is the best response?

A hacker gains access to a web server and reads the credit card numbers stored on that server. Which security principle is violated?