Cyber-attackers targeting transaction data increasingly use software that monitors memory for unencrypted card numbers and account information.
Security professionals are focusing on the tools that attackers use to steal the credit card data and account information from point-of-sale (POS) terminals and computerized cash registers as the likely source of massive breaches at retailers Target and Neiman Marcus.
The most probable suspect is software known as a random access memory, or RAM, scraper, which steals data in its unencrypted form from the main memory of an infected computer.