Active content
When active , executable or dynamic content , more rarely, as embedded code , content is mostly in sites designated that only the runtime to run. In addition, the terms are also used for other content for which the underlying formats were usually originally designed to be static.
Technical details
Web pages that are written in HTML can contain so-called active content . Here can languages - such as JavaScript - be used to provide additional after loading a web page dynamic to make content available, which can not be realized with static HTML.
Similarly, documents (such as PDF or DOC ) can contain (or have embedded ) active or executable content , whereby languages (such as JavaScript or VBA ) can also be used.
safety
What all active content has in common is that it is executed locally on the user's PC immediately after loading (from the Internet or the document) and thus basically represents a security risk for the user's PC, including the operating system installed on it.
Known technologies
Well-known technologies in this field are:
- ActiveX controls - proprietary software from Microsoft
- Flash - Adobe proprietary software
- Java - partially free software from Sun
- JavaScript (now ECMAScript) - free scripting language that especially in connection with AJAX is used
See also
Web links
- Active content - page at the BSI
- Drive 2.0 - Article in Linux magazine ; published in issue 2010/01
- dynamic content - entry in the Internet lexicon at SymWeb
- Executable content in Java ( Memento from November 15, 2002 in the Internet Archive ) - page at the University of Freiburg