Update: Retail Breaches Spread. Point of Sale Malware A Suspect.

Reuters and security reporting describe multiple holiday‑season breaches at U.S. retailers (including Target and Neiman Marcus) in which RAM‑scraping point‑of‑sale malware (examples: Dexter variants, Citadel, Project Hook) harvested magnetic‑stripe Track 1/2 data for exfiltration; law enforcement suspects Eastern European cybercriminal gangs and US‑CERT issued guidance on mitigating PoS malware (strong passwords, patching, anti‑malware, blocking removable media).