Toolbox classification tags

[9b]

Once a sample has been tagged as malicious or non-malicious, there is no way to easily remove this tag. An AJAX method should be provided to remove the tag from a given file if it were marked wrong.

Suggested fix:

• AJAX call that passes the given hash to update with the action to be performed.
• Update the document in Mongo by popping the tag from the "tags" array.