Free application security software for windows

Astaro Security Linux is an all-in-one network security gateway that
includes a firewall, intrusion protection, virus protection, spam
protection, URL filtering, and a VPN gateway. Features include stateful
packet inspection, deep packet filtering, application-level intrusion
detection, content filtering, virus detection for email traffic (SMTP
and POP3) and Web traffic (HTTP), whitelists and blacklists, IPSec and
PPTP VPN tunneling, spam blocking, logging and reporting. The software
is built on an embedded, especially hardened Linux distribution. The
WebAdmin tool and Up2Date service make it easy to install, manage, and
update all six security applications.

Privacyware Dynamic Security Agent (DSA) delivers easy, immediate, signature-less protection from known or new malware and all forms of unauthorized use for Windows desktops and servers. An intelligent multi-layered defense, DSA continuously evaluates system processes, applications, WinAPI calls, registry settings and other system variables to reveal, alert, quarantine and block potentially malicious activity. DSA incorporates system and email anomaly detection components that baseline normal computer operation and detect unacceptable deviations from typical use. DSA is an ideal, zero-day defense complement to virus and spyware scanners and firewalls. Stop malware, viruses, drive-by downloads, spyware, adware, rootkits, phishing and other threats with DSA. Dynamic Security Agent?s layered approach to PC and enterprise endpoint defense addresses the Windows vulnerabilities and progressive techniques that hackers exploit to gain unauthorized system access and deliver malicious payloads. DSA provides Application Security by providing detailed alerts for incoming and outgoing application-specific Internet traffic. DSA also models and monitors system behavior to identify and block activity characteristic of known malware, hacking, phishing and other threat types so that personal computer users and IT managers within small, medium or large organizations can more effectively and proactively protect the environments and private data for which they are responsible. Privacyware DSA?s configuration is easily managed via the simple main menu. Privacyware DSA is an ideal and proactive complement to conventional virus and spyware scanning software as well as personal and server firewall applications. Privacyware DSA supports Windows XP, Windows 2000 and Windows Server 2000/2003.