Which three options are attack vectors protected by Email Security? (Choose three)

Endpoints are a protected attack vector because malicious email attachments and links are delivered to and executed on endpoint devices, making endpoint protection an integral part of an email security architecture.

Offline devices are not connected to networks and cannot receive or process email-borne threats, so they are not an attack vector within the scope of email security.

Mobile devices are an attack vector because users access corporate email on smartphones and tablets, and email security must extend to mobile email clients to block phishing, malware, and BEC threats delivered over mobile platforms.

Email itself is the core attack vector that email security is purpose-built to protect, blocking spam, phishing, Business Email Compromise, and malware delivered directly through email protocols such as SMTP.

Voicemail is a separate communication channel operating over telephony infrastructure and is not addressed by email security solutions, which are scoped to email protocols.

Backups are a data storage and recovery mechanism, not a network-facing attack vector that email security is designed to intercept or mitigate.