Forward secrecy is a property of certain key agreement PROTOCOLS that ensures that the session keys will not be exposed if the server's private key is exposed. Perfect forward secrecy is another name for it (PFS).
The "Diffie–Hellman key exchange" algorithm is USED to accomplish this.

Cybersecurity is critical because it safeguards all types of DATA against theft and loss. Sensitive data, personally identifiable information (PII), protected health information (PHI), personal information, intellectual property, data, and governmental and industry information systems all fall under this category.
Your company won't be ABLE to defend itself if it doesn't have a cybersecurity program.
Cyber security awareness is defined as the knowledge of an action taken to secure a company's information assets. When employees at a company are cyber security conscious, it implies they understand what cyber dangers are, the possible impact a cyber-attack will have on their company, and the procedures necessary to reduce risk and prevent cyber-crime from penetrating their online workspace.
To learn more about Cyber Security, you can go through the following references:-

• Hacking: The Art of EXPLOITATION by Jon Erickson
• Practical Malware Analysis by Michael Sikorski