The new antivirus suite includes protection against "Trojan horse" programs and malicious Java code.
Norton AntiVirus 5.0 still protects Windows 95 and Windows NT workstation users, but also includes some features designed specifically for use in concert with the latest Microsoft operating system.
The new version also provides more frequent virus definition updates and patches, Merrit said, which can save users the trouble of seeking out the appropriate patch whenever a virus rumor makes the rounds on the Web.