ZoneAlarm is an internet security software company that provides consumer antivirus and firewall products. ZoneAlarm was developed by Zone Labs, which was acquired in March 2004 by Check Point. ZoneAlarm's firewall security products include an inbound intrusion detection system, as well as the ability to control which programs can create outbound connections. In August 2015, ZoneAlarm introduced a 100% virus-free guarantee with its Extreme Security product.