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Asymmetric encryption, also known as public key cryptography, uses two different keys for encryption and decryption: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret. Data encrypted with the public key can only be decrypted with the private key, and vice versa. This ensures that only the intended recipient can access the encrypted data, and that the sender can prove their identity with a digital signature. Asymmetric encryption is widely used for securing Internet communications, such as TLS/SSL, which enables HTTPS. Some examples of asymmetric encryption algorithms are RSA, Diffie-Hellman, and Elliptic Curve Cryptography. The other options are not correct because they do not use a public key and private key. Symmetric encryption uses the same key for encryption and decryption, and is faster and more efficient than asymmetric encryption. However, symmetric encryption requires a secure way to exchange the key between the sender and the receiver, which can be facilitated by asymmetric encryption. Linear and nonlinear encryption are not types of encryption, but rather properties of encryption algorithms. A linear encryption algorithm is one that can be expressed as a linear function, such as XOR. A nonlinear encryption algorithm is one that involves more complex mathematical operations, such as modular arithmetic or S-boxes. Nonlinear encryption algorithms are generally more secure and resistant to cryptanalysis than linear encryption algorithms. References :=

Public-key cryptography - Wikipedia

How does public key cryptography work? - Cloudflare

Public and private encryption keys | PreVeil

AES encryption, what are public and private keys?

Explanation

Community Cloud allows system and services to be accessible by group of organizations. It shares the

infrastructure between several organizations from a specific community. It may be managed internally by

organizations or by the third-party.

 The open standard that creates a framework for sharing threat intelligence in a machine-digestible format is STIX (Structured Threat Information Expression). STIX is a language and serialization format that enables the exchange of cyber threat information across organizations, tools, and platforms. STIX defines a common vocabulary and data model for representing various types of threat intelligence, such as indicators, observables, incidents, campaigns, threat actors, courses of action, and more. STIX also supports the expression of context, relationships, confidence, and handling of the threat information. STIX aims to improve the speed, accuracy, and efficiency of threat detection, analysis, and response.

STIX is often used in conjunction with TAXII (Trusted Automated Exchange of Indicator Information), which is a protocol and transport mechanism that enables the secure and automated communication of STIX data. TAXII defines how to request, send, receive, and store STIX data using standard methods and formats, such as HTTPS, JSON, and XML. TAXII supports various exchange models, such as hub-and-spoke, peer-to-peer, or subscription-based. TAXII enables the interoperability and scalability of threat intelligence sharing among different systems and organizations.

 Cisco AMP for Endpoints provides next-generation protection by leveraging an endpoint protection platform (EPP) and endpoint detection and response (EDR) capabilities. EPP is a set of multifaceted prevention techniques that stop threats from compromising endpoints, such as behavioral analytics, machine learning, and signature-based methods. EDR is a set of powerful features that reduce the attack surface and remediate faster, such as advanced threat hunting, endpoint isolation, and dynamic malware analysis. Cisco AMP for Endpoints also integrates with SecureX, a built-in platform that offers extended detection and response (XDR) capabilities across multiple control points, such as network, cloud, email, and web. By combining EPP, EDR, and XDR, Cisco AMP for Endpoints delivers a comprehensive and resilient endpoint security solution that can detect, respond, and recover from sophisticated attacks. References:

Cisco Secure Endpoint (Formerly AMP for Endpoints) - Cisco

Cisco Secure Endpoint (Formerly AMP for Endpoints) - Cisco

Cisco Secure Endpoint (Formerly AMP for Endpoints) - Cisco