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We've successfully backed up all 4 Prestashop stores, downloaded them to my PC, and scanned them with antivirus software. Fortunately, no Trojans or spyware were detected, or they might be well-hidden. Tomorrow, our plan is to migrate them to the VPS. We'll be installing fresh copies of Prestashop and transferring the backed-up stores to the new server. However, there's a concern with this process: if there are any hidden instances of spyware, they might also be copied over because we can't identify the source of the problem. The issue persisted on the shared server; every day, the index.php file size becomes zero, .htaccess files get corrupted, and the files Symfony/Component/Cache/Traits/PhpFilesTrait.php and vendor/twig/twig/src/Environment.php disappear. We'll update tomorrow.

We don't have an antivirus running on the shared server.

Nothing weird, no warnings or errors.

It occurs sporadically, usually around 4:30 am, and a few more times throughout the day. The behavior is odd and suggests that this version might be compromised. Additionally, the .htaccess file is altered, causing images not to display. The solution is straightforward: upload the original index.php file from the initial installation. However, a new problem arises – the back office (BO) doesn't function properly because two files have disappeared due to the changes made in the index.php file. Symfony/Component/Cache/Traits/PhpFilesTrait.php vendor/twig/twig/src/Environment.php Once both get re-uploaded, then BO works and .htaccess can be re-generated yet this is too much to do it on a daily basis.

Greetings Nickz, appreciate your response. Currently, we're using Godaddy shared hosting, but we're in the process of transitioning to a VPS within Godaddy. This move allows us greater server control and enables us to implement additional security measures like antivirus and firewall protections for our websites. Surprisingly, we hadn't considered the possibility of unfair practices by hosting companies, but I suppose anything can happen. We've conducted a site scan, and it revealed no spyware or vulnerabilities. However, it's conceivable that something might be infecting our site from within. regards, AJ

Same issue everyday, so, is there a way to maybe automatically schedule those files to automatically upload every morning? I would just need to upload the index.php main file, also this one Symfony/Component/Cache/Traits/PhpFilesTrait.php and this one vendor/twig/twig/src/Environment.php

A little update, we ended up migrating to a VPS server and issues were automatically taken care of.

Hello fellow geeks, on this example is the custom text box but the error also applies to CMS pages. When I want to insert an image and click on the image icon of the html editor, the insert/edit image window pop ups, then when I click on source, it loads the image window but instead of displaying the usual image picker, it loads the main site (front office), weird right? regards, AJ

We had GoDaddy for years (+10) and we may be coming to an end of this relationship as they denied us to whitelist a link from our domain from the MODSecurity, hence, we cannot run some add ons we purchased from the official Prestashop store. The developers have mentioned it doesn't matter if we are on shared hosting as many hosting providers offer this option with shared hosting plans. including his, where the demo of the add on is running. So, good bye Godaddy and heads up for eveybody looking to whitelist add ons from MODSecurity. They used to allow it but corporate greed got in the way and all they want is money, why enable for free when they can simply charge for it right? regards, AJ

Hello fellow Geeks, We are running 6 prestashop stores on the 8.1 latest version, every morning we are facing the same issues. 1. Front Office works. 2. Back Office doesn't because is missing file Symfony/Component/Cache/Traits/PhpFilesTrait.php so no biggie, we upload the file again and voilá, access to BO is granted again. 3. Now we navigate through the BO but whenever we click on any admin link it returns another error, this time because is missing vendor/twig/twig/src/Environment.php so no biggie again, we re-upload it and everything is smooth until the next morning. We are noticing some weird time logs on our server at 4:38:21 am Anybody has any clue of what's going on? Thanks in advance! regards, AJ

Randomly, when we make changes on our BO, the index file will change to one with zero file size: index.php filesize 0 When we open the file to inspect it, it has no content obviously. We also noticed this file .php-cs-fixer.dist.php which is probably causing the issue. It has been deleted, uploaded the default index.php and website is running again.

Understood, so what would be the best practice in case I'd live to have more cms installed? I see a server like a hotel right, you got the different domains (rooms) inside, and inside those rooms you have different cms correct? So, let's say I break into the hotel, I may be able to access the rooms that are not locked in, but the ones that are locked in, well, I cannot break in that easily. So, what would be the best practice to run several cms's within one server? P.S. I am going to check the server logs and post the events here, I saw some activity (last modified) on folders and files through ftp around 4:28 am.

So pretty much, Prestashop can never have anything else from third parties, no themes, not add-ons, regardless if they come from the official store, without risking being hacked?

Nothing, we even got a brand new server and installed just that version due to previous bad experiences with hacking. What the hacking does it to change the .htaccess and index.php. In this case we experienced today, it also deleted to files: vendor/twig/twig/src/Environment.php vendor/symfony/symfony/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php Once we uploaded them back into the server, we had the website back.

We have been using Prestashop since 1.4 and we fondly remember those days, you could run a store without being worry of hacked files on a daily basis. These days, it seems,regardless of running the latest and most secure version (8.1.1), we are still getting hacked. This morning we tried to access our brand new, fresh installed 8.1.1 version and is already hacked, we can access the FO yet not the BO, how can this happen? The .index file under admin folder contained this line of code: 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We enabled debug and it display the error attached in the image. We don't want to change eCommerce software but if we continue getting hacked then we may have no choice. Iwas able to restore the backoffice by uploading the entire missing files, which should not vanish in the first place.