Data Exfiltrtation Detection (DNS, FTP, HTTP, ICMP)
Learning Objectives In this entry, we will cover the following learning objectives: - Understand the common methods used for data exfiltration. - Learn how to detect exfiltration attempts using network traffic analysis. - Identify signs of exfiltration on endpoint devices. - Correlate logs in a SIEM to uncover hidden exfiltration channels. 1) Data Exfil: Overview Tech, and indicators -> unauthorized data transfer from in to out by adversaries -> can be by insider or malware 1.1) Why they do data exfil? Reason Description Financial Gain Stolen data (e.g., credit card information, personal records) can be sold on the dark web or used for fraud. Espionage Nation-state actors target intellectual property, trade secrets, or classified information for strategic advantage. Ransomware & Extortion Attackers steal data and threaten to leak it unless a ransom is paid. Disruption & Sabotage Adversaries aim to damage an organization's reputation or operations by exposing sensitiv...