Your Drupal website has a backdoor

I estimate hundreds of thousands of Drupal websites now have backdoors; between ten and ninety percent of all Drupal websites. Automated Drupageddon exploits were in the wild within hours of the announcement. Updating or patching Drupal does not fix backdoors that attackers installed before updating or patching Drupal. Backdoors give attackers admin access and allow arbitrary PHP execution. If your Drupal 7 (and 8) website is not updated or patched it is most likely compromised.

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