Security Issues
Although JSON is intended as a data serialization format, its design as a subset of the JavaScript scripting language poses several security concerns. These concerns center on the use of a JavaScript interpreter to execute JSON text dynamically as JavaScript, thus exposing a program to errant or malicious script contained therein—often a chief concern when dealing with data retrieved from the Internet. While not the only way to process JSON, it is an easy and popular technique, stemming from JSON's compatibility with JavaScript's eval function, and illustrated by the following code examples.
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