In web applications an HTTP refers to Hypertext Transfer Protocol and an HTTP Header is the value that is displayed in a request or response message, the header has a name and a value separated by a colon.
An HTTP header attack called an header injection is a vulnerability that is present when users' inputs are required for the dynamic generation of HTTP headers. This vulneraility allows several security threats to be carried out, some examples are:
You can use System Restore to return the computer file history to an earlier point in time.
Explanation:
System Restore allows you to recover documents/files that may have been deleted if your computer is not operating as it should be. Therefore, the answer is "computer file history".
