Secure cryptographic components are essential security features within the SSL/TLS domain, providing crucial protections for data transmission and integrity. Details of these features are outlined below:

Forward Secrecy

1. Impact:
   
1. The absence of forward secrecy can result in session hijacking and breaches of secure authentication, leading to unauthorized access to sensitive information
2. Best Practices: To maintain forward secrecy:
   
1. Avoid using insecure ciphers and older protocols that do not support forward secrecy.
   
2. Utilize ECDH (Elliptic Curve Diffie-Hellman) ciphers for secure authentication and session management to enhance security.
   

AEAD (Authenticated Encryption with Additional Data)

1. Impact:
   
1. The absence of AEAD can leave systems vulnerable to various attacks, including padding oracle attacks, tampering or bit-flipping attacks, and increased susceptibility to man-in-the-middle (MitM) attacks. Non-AEAD encryption lacks the built-in authenticity and integrity protection necessary to safeguard communications.
2. Best Practices: To mitigate security risks:
   
1. Avoid using insecure ciphers that do not support AEAD.
   
2. Opt for AEAD ciphers to ensure enhanced security and protect against potential vulnerabilities.
   

ChaCha20

1. Impact:
   
1. Without the use of ChaCha20, systems may become vulnerable to various attacks, particularly those targeting older, less secure cipher algorithms. This can lead to data breaches and compromised communications.
2. Best Practices: To ensure strong encryption and maintain secure communications:
   
1. Always use ChaCha20 in combination with AEAD modes, such as ChaCha20-Poly1305, for enhanced security.
   
2. Avoid outdated ciphers that do not meet modern security standards.
   
3. Keep your cryptographic implementations up to date with the latest security protocols and practices.