https://blog.pcioasis.com/tags/data-exfiltration/Recent content in Data-Exfiltration on PCI Oasis BlogHugoen-usTue, 23 Jun 2026 00:00:00 +0000https://blog.pcioasis.com/posts/threat-intel/steganography-favicon-skimming/Tue, 23 Jun 2026 00:00:00 +0000https://blog.pcioasis.com/posts/threat-intel/steganography-favicon-skimming/A deep-dive into Lab 4 — how attackers embed fully functional JavaScript skimmers inside a site's favicon using steganographic encoding, bypassing script-focused security controls entirely.