My web-site was hacked and I have receive notice from hosting:
We received a notice that your account was involved in an outgoing DDOS through the following file:
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/home/htigorg/public_html/trade/plugins/system/mEvent.php
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Your account has been compromised due to a compromised Joomla installation.
We have suspended the account at this time to stop the abuse. This account contains many malicious files..
Now I need to update Joomla.
How I can do it without problems?