How to Block Zero Day Threats in Javascript

Zero day threats are a major scourge to sites all over the world. Consisting of brand new threats that are often customized specifically for your site, these are impossible to detect for a purely definition-based malware scanner. This allows them to slip into your site undetected to wreak havoc in any of a dozen ways. Today we are going to set up a means of filtering out these threats using an API, which will provide us with highly accurate results with almost no setup time.

First we add this script tag to your page’s head section:

<script src="https://cdn.cloudmersive.com/jsclient/cloudmersive-virus-client.js"></script>

Following that, we are able to call our virus scan function:

var CloudmersiveVirusApiClient = require('cloudmersive-virus-api-client');
var defaultClient = CloudmersiveVirusApiClient.ApiClient.instance;
// Configure API key authorization: Apikey
var Apikey = defaultClient.authentications['Apikey'];
Apikey.apiKey = 'YOUR API KEY';
// Uncomment the following line to set a prefix for the API key, e.g. "Token" (defaults to null)
//Apikey.apiKeyPrefix = 'Token';
var apiInstance = new CloudmersiveVirusApiClient.ScanApi();
var inputFile = "/path/to/file"; // File | Input file to perform the operation on.
var opts = {
'allowExecutables': true, // Boolean | Set to false to block executable files (program code) from being allowed in the input file.  Default is false (recommended).
'allowInvalidFiles': true, // Boolean | Set to false to block invalid files, such as a PDF file that is not really a valid PDF file, or a Word Document that is not a valid Word Document.  Default is false (recommended).
'allowScripts': true, // Boolean | Set to false to block script files, such as a PHP files, Pythong scripts, and other malicious content or security threats that can be embedded in the file.  Set to true to allow these file types.  Default is false (recommended).
'allowPasswordProtectedFiles': true, // Boolean | Set to false to block password protected and encrypted files, such as encrypted zip and rar files, and other files that seek to circumvent scanning through passwords.  Set to true to allow these file types.  Default is false (recommended).
'restrictFileTypes': "restrictFileTypes_example" // String | Specify a restricted set of file formats to allow as clean as a comma-separated list of file formats, such as .pdf,.docx,.png would allow only PDF, PNG and Word document files.  All files must pass content verification against this list of file formats, if they do not, then the result will be returned as CleanResult=false.  Set restrictFileTypes parameter to null or empty string to disable; default is disabled.
};
var callback = function(error, data, response) {
if (error) {
console.error(error);
} else {
console.log('API called successfully. Returned data: ' + data);
}
};
apiInstance.scanFileAdvanced(inputFile, opts, callback);

By default, this will automatically detect incoming zero day threats, such as scripts, executables, and masked invalid files. And just like that, your website is now secure.