The FBI is warning retailers to expect more cyberattacks. The agency distributed a confidential report to retail companies last week describing the risks posed by “memory-parsing” malware that infects point-of-sale systems, which include cash registers and credit-card swiping machines found in store checkout aisles, Reuters reports. Meanwhile, Congress is turning up the heat on Target, summoning CFO John Mulligan to testify at a Senate hearing on Feb. 4, Reuters says.The FBI is warning retailers to expect more cyberattacks. The agency distributed a confidential report to retail companies last week describing the risks posed by “memory-parsing” malware that infects point-of-sale systems, which include cash registers and credit-card swiping machines found in store checkout aisles, Reuters reports. Meanwhile, Congress is turning up the heat on Target, summoning CFO John Mulligan to testify at a Senate hearing on Feb. 4, Reuters says.