Patent ID: 9516042
Filing Date: 2016-12-06
CPC Classification: H04L

Claim Text:
1. A web system comprising: a first web server configured to hold content; a second web server configured to hold the same content as the content held in the first web server; and a server switching apparatus configured to a web server providing the content to a user when a predetermined server switching condition is met, wherein the server switching apparatus includes: wherein the first and second web servers are configured such that the web server, of the first web server and the second web server, that has been activated by the switching unit, sends content requested by the request to the user, wherein the attack detection unit has a virus detection unit configured to detect a computer virus on the web server or a tampering detection unit configured to detect that the content has been tampered with, and wherein the attack detection unit is further configured to detect whether or not the first web server has been attacked when the first web server is in an inactive state and the second web server is in an active state, and configured to detect whether or not the second web server has been attacked when the second web server is in the inactive state and the first web server is in the active state.