In the tar.gz file for release version 1.51, Windows 10 will quarantine the following file upon accessing it (including unzipping it):
`./chromium_extension/index.php` . 
Windows will identify it as the "**backdoor:PHP/Dirtelti.HA**" trojan and label it as being a *severe* threat.  The named trojan is a secure shell tunneling vulnerability with rather simple variants being any PHP script that uses `eval()` or `echo`.
The contents of the `index.php` file, shown below, do not appear to be deliberately malicious and it is otherwise not particularly sinister, but it might be a good idea to rewrite it.

```
<?php 
if (isset($_POST["espeakng"])) {
    header('Vary: Origin');
    header("Access-Control-Allow-Origin: chrome-extension://<id>");
    header("Access-Control-Allow-Methods: POST");
    header("Content-Type: application/octet-stream");
    header("X-Powered-By:");
    echo passthru($_POST["espeakng"]);
    exit();
  }

```

I did not even know there was a chrome extension or something, so I don't know if it is critical or not.  

In any case, for those who might freak the f*ck out at the ***Severe Virus Threat Warning***, nothing will activate if you simply delete it (if you want) or if you let windows quarantine it.  

This `index.php` file is only *324 bytes*, but variants of the **Dirteli** trojan of a similar size seem to either need to access another (presumably larger) file, or to otherwise send a call-home signal.  
Win 10 quarantines an index.php file as being the backdoor:PHP/Dirtelti.HA trojan
This is a GitHub Issue
repo:espeak-ng
owner:espeak-ng
Title : Win 10 quarantines an index.php file as being the backdoor:PHP/Dirtelti.HA trojan
Issue date:

--- start body ---
In the tar.gz file for release version 1.51, Windows 10 will quarantine the following file upon accessing it (including unzipping it):
`./chromium_extension/index.php` . 
Windows will identify it as the "**backdoor:PHP/Dirtelti.HA**" trojan and label it as being a *severe* threat.  The named trojan is a secure shell tunneling vulnerability with rather simple variants being any PHP script that uses `eval()` or `echo`.
The contents of the `index.php` file, shown below, do not appear to be deliberately malicious and it is otherwise not particularly sinister, but it might be a good idea to rewrite it.

```
<?php 
if (isset($_POST["espeakng"])) {
    header('Vary: Origin');
    header("Access-Control-Allow-Origin: chrome-extension://<id>");
    header("Access-Control-Allow-Methods: POST");
    header("Content-Type: application/octet-stream");
    header("X-Powered-By:");
    echo passthru($_POST["espeakng"]);
    exit();
  }

```

I did not even know there was a chrome extension or something, so I don't know if it is critical or not.  

In any case, for those who might freak the f*ck out at the ***Severe Virus Threat Warning***, nothing will activate if you simply delete it (if you want) or if you let windows quarantine it.  

This `index.php` file is only *324 bytes*, but variants of the **Dirteli** trojan of a similar size seem to either need to access another (presumably larger) file, or to otherwise send a call-home signal.  
--- end body ---

The index.php file in the espeak-ng release version 1.51 is flagged by Windows 10 as a potential backdoor (PHP/Dirtelti.HA) due to its use of the `passthru()` function with user input, which can lead to remote code execution vulnerabilities. While the file's contents do not appear deliberately malicious, the use of `eval()` or `passthru()` with unsanitized input is a common security risk, and it is advisable to rewrite the script to mitigate potential vulnerabilities.