反病毒 - 常用名称： 21.504 技术名称： 别名： Blueskyltd.biz     类型： ADWARE 大小： 1024 Bytes     检测情况 出现次数： 首次出现日期： June 15, 2006 at 11:49 AM 首次发现国家或地区： 最近一次发现国家或地区：

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Adware refers to programs that display advertising using any means: pop-ups, banners, changes to the browser home page or search page, etc. The advertisements could be associated with the products or services offered by the creator of the program or by third-parties.

Adware can be installed in a number of ways, on some occasions without users' consent, and either with or without users' knowledge of its function.

21.504 prevents access from programs to websites of several companies related with security tools (antivirus programs, firewalls, etc.).

21.504 redirects attempts to access web pages of certain banks to spoofed pages, with the aim of logging information entered by the user in these pages.

21.504 redirects attempts to access several web pages to a specific IP address.

21.504 does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.

21.504 carries out the following actions:

• 21.504 displays advertising on the screen using any means: pop-ups, banners, changes to the browser home page or search page, etc. The advertisements could be associated to the products or services offered by the creator of the program or third-parties.

“病毒百科全书”中关于 21.504 的详细信息。