It has the most comprehensive features beyond hacker protection and is the most complete and easily configurable of the three personal firewalls. Limited operability BlackIce Defender shows all traffic and suspicious traffic at intervals of minutes, hours and days. Microsoft Windows NT 4.0 or Windows 2000. The current version operates only under Windows 9x. I ve heard that Symantec Corp. plans to release a new personal firewall product for NT and Win 2000 next month.
Viruses can behave creatively enough to be considered hacks.
The service-denial strikes against Web business sites this year, in fact, had their origin in a viral hack. A hacker or hackers invaded vulnerable computers, dropping off a virus that, when triggered, sent a flood of requests to a particular Web site designated for the attack. Other viral hacks can be more personal, waiting for a user to enter a password or a credit card number and intercepting the keystrokes for later transmission across the Internet. Some such Trojan horse attacks sneak in under the guise of friendly downloads. I once inadvertently downloaded a virus embedded in a Web page.