Which Cisco PIX and ASA feature provides reliable, comprehensive security against virus and worm propagation, as well as data theft?

A.
AIM

B.
WebVPN for SSL

C.
IPSec

D.
stateful packet inspection

Explanation:
http://www.cisco.com/en/US/docs/ios/12_4t/12_4t11/htwebvpn.html
The SSL VPN feature (also known as WebVPN) provides support, in Cisco IOS software, for remote user access to enterprise networks from anywhere on the Internet. Remote access is provided through a Secure Socket Layer- (SSL-) enabled SSL VPN gateway. The SSL VPN gateway allows remote users to establish a secure Virtual Private Network (VPN) tunnel using a web browser. This feature provides a comprehensive solution that allows easy access to a broad range of web resources and web-enabled applications using native HTTP over SSL (HTTPS) browser support. SSL VPN delivers three modes of SSL VPN access: clientless, thin-client, and full-tunnel client support.

content\166040\plo_content\ORG1114\COURSE166040\enus_011425\lsn_06\tpc_c\enus_011425_06c.xml:
Generally, ASA WebVPN for SSL VPN provides flexible application access for any deployment scenario, and reliable, comprehensive security against virus/worm propagation and data theft. All features are included with simple, cost-effective pricing.