Security companies Morphisec and Cisco reported the extent of the damage caused by a malware attack on security software CCleaner. Experts say that the software, distributed by Czech company Avast, was targeted not simply to disrupt as many computers as possible, but to conduct espionage. Hackers penetrated the software and added a backdoor, ultimately installing malware on more than 700,000 computers. But hackers also sought to find computers among those infected that resided in networks of 20 leading tech firms. Continue reading CCleaner Malware Is Linked to Attack Against 20 Tech Firms