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Recently I have spent a great amount of time, assisting a client in securing Magento store after hack incident. Seeing all the impact of the hack on their business, I can say – it’s really best to secure things early.
You should save yourself from all the trouble of dealing with clients who had their credit card data stolen, or police investigators. Worst case, you might even loose your business completely as payment processor might prevent you from using them again.
Secure Magento with GIT
One of the ways in securing your store is being alert when hackers make modifications to Magento files. To achieve this, you can put your entire Magento under GIT.
This 5 minutes read will teach you how to get email alerts when any of your Magento files have been changed by a hacker. This implies that the hacker changes files on your server directly, whereas all legitimate changes are done by you or developer via Git.
Step 1. Setup root email address
A trivial yet often oversight sysadmin task is to setup email where you will receive system emails. It’s easy to do that. Edit the file
/root/.forward and put your email address as contents of the file. Or a simple bash one liner will do it for you:
echo 'firstname.lastname@example.org' > /root/.forward
Step 2. Setup cron for monitoring GIT
Provided that you have already put your Magento store under GIT, you have to edit root user’s crontab:
sudo crontab -e
Add the following cron task. It will monitor your Magento store for files which were changed / added directly on the server:
* * * * * /usr/bin/git --git-dir "/var/www/html/.git" --work-tree "/var/www/html" ls-files -m -o --exclude-standard
It runs every minute and sends immediate alert to your email once any files have been changed directly, outside Git workflow.
You will continuously receive email alert every minute until the files are reverted or commit / pushed to your Git repository.
“Every minute might seem to much” for some people but you really want to be alerted early and not give much time for hacker to collected credit card numbers.
If you have a dedicated developer working with your Magento store, then you can have different monitor frequency for yourself and the developer. Using simple cron trick:
MAILTO="email@example.com" * * * * * /usr/bin/git --git-dir "/var/www/html/.git" --work-tree "/var/www/html" ls-files -m -o --exclude-standard MAILTO="root" 0 * * * * /usr/bin/git --git-dir "/var/www/html/.git" --work-tree "/var/www/html" ls-files -m -o --exclude-standard
The above lines are for 2 cron jobs: one is every-minute monitoring with notifications sent to dev user, and the other one for every-hour monitor with notifications sent to root user (yourself).