We're getting the following error:

Magento Fatal error: Class' Varien_Data_Collection_Filesystem' not found

Checking the cause of the error, the Filesystem.php file is is renamed to Filesystem.php.suspected. Manually renaming it back to Filesystem.php fixes the issue but everyday we need to manually rename it since it is constantly being renamed back to Filesystem.php.suspected.

I've googled as to what causes the error but still no luck. I am quite sure that there is something that is renaming this file but don't know where to start since i'm fairly new to magento.

Magento ver.

  • I suspect ;) that there is a virus/malware scanner of some sort running on your system that feels this file is not safe. I can imagine this with a file containing all sorts of file system operations. You should set your software to ignore this file. – 7ochem Sep 16 '15 at 8:38
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    I am having similar situation. The above file is getting changed to .suspected everyday. I verified and found that I do not have any malware scanner installed. So what will be causing this change in my case. And yes, I verified the original file with the file on my server and there is no change. – Ajay M Nov 24 '15 at 3:35

As @7ochem pointed out, this looks like something a malware scanner would do, that either you or your hoster installed.

Please compare the renamed file to the original Magento file (you can download it from here: https://raw.githubusercontent.com/OpenMage/magento-mirror/ and see if there are any differences.

If not, the alert was a false positive, configure the malware scanner to ignore it, or ask your hoster to do so.

If yes, you have been hacked. Please read https://magento.stackexchange.com/a/78866/243 and take action immediately.

  • I've verified that there are no differences with the file in concern and the ones in the mirror. My magento installation is on a digitalocean ubuntu droplet and i am not sure if the previous dev has installed a malware scanner. How can i check for the default scanner? – PunctuationMark Sep 16 '15 at 9:07
  • I don't know. Ask Digitalocean. – Fabian Schmengler Sep 16 '15 at 11:47
  • have same problem. do you fix it? – James M May 18 '17 at 13:53

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