Today we've released RSFirewall! Revision 9, which contains a new feature: it cleans the backdoored versions of Jumi from your website. You can read the changelog here.
Jumi is a very popular Joomla! component, some of our customers being already affected by this backdoor - so we added this security measure as an extra protection layer to keep our customers' websites safe.
As usual, we advise you to run the System Check and follow the on-screen instructions to obtain a better security rating on your website, keep passwords safe and always be up to date with the latest software versions and the latest threats.