Cybersecurity firm FireEye Inc plans to take on Cisco Systems Inc and Palo Alto Networks Inc in selling intrusion prevention systems, which help companies detect cyber threats that breach their firewalls. FireEye said on Monday that it plans to start selling the new products by the middle of this year, adding to its existing technology that helps protect computers from infection by tainted messages and malicious websites. The intrusion prevention systems (IPS) market totaled nearly $1.9 billion in 2012, according to market research firm IDC. That is nearly 10 times the size of the market for specialized threat analysis and protection technology, for which FireEye is best known.