Episode 37: Message-Based and Communication Threat Vectors (Domain 2)

Attackers frequently exploit messaging channels—email, SMS, and instant messaging—to deliver payloads, harvest credentials, or manipulate users into making harmful decisions. In this episode, we explore how communication platforms serve as high-risk threat vectors, focusing on phishing, smishing (SMS phishing), and malicious messaging over tools like Slack, Teams, or WhatsApp. These attacks often use urgency, trust, or impersonation to convince users to click a link, download a file, or respond with sensitive information. Because communication is central to daily business operations, attackers count on high engagement and lower scrutiny, especially on mobile devices where URLs are harder to verify and content appears more trustworthy. We also touch on mitigation strategies such as content filtering, link rewriting, real-time scanning, and user training, which help reduce the effectiveness of these attacks. Understanding message-based vectors is essential for stopping intrusions before they reach deeper into the organization, as many breaches begin with a single deceptive message.

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