Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock ( 
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
National Initiative for Cybersecurity Careers and Studies
Explore how PKI provides a hierarchy of digital security certificates used to secure data and authenticate users and devices and how data is protected with encryption and file integrity verification, as you prepare for the CISA exam.
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