We have discussed two detection systems, including SNARE and BotGraph, relevant to spamming activities. Please identify the correct statement$($s$).$

BotGraph focuses on detecting email servers used for spamming. Comparatively, SNARE focuses on detecting email accounts registered to an email service provider, which are used for sending spam messages.

BotGraph is a learning$-$based detection system since it requires information of $($many$)$ labeled spam messages and ham messages to train a statistical classification system. Comparatively, SNARE does not need labeled data for detection. Instead, it studies the coordinated activities of potential spammers.

SNARE focuses on detecting email servers used for spamming. Comparatively, BotGraph focuses on detecting email accounts registered to an email service provider, which are used for sending spam messages.

SNARE is a learning$-$based detection system since it requires information of $($many$)$ labeled spam messages and ham messages to train a statistical classification system. Comparatively, BotGraph does not need labeled data for detection. Instead, it studies the coordinated activities of potential spammers.