Reader wiredmikey writes: Security researchers at Cisco have come across a piece of software that installed backdoors on 12 million computers around the world. Researchers determined that the application, installed with administrator rights, was capable not only of downloading and installing other tools, such as a known scareware called System Healer, but also of harvesting personal information. The software, which exhibits adware and spyware capabilities, was developed by a French online advertising company called Tuto4PC. The “features” have led Cisco Talos to classify the Tuto4PC software as a “full backdoor capable of a multitude of undesirable functions on the victim machine.” Tuto4PC said its network consisted of nearly 12 million PCs in 2014, which could explain why Cisco’s systems detected the backdoor on 12 million devices. An analysis of a sample set revealed infections in the United States, Australia, Japan, Spain, the UK, France and New Zealand.Tuto4PC has received flak from many over the years, including French regulators. Read more of this story at Slashdot.