: What is HTML:imghack-a [Trj]? One of my websites (Joomla) is being blocked by Avast when I try to go to the administrator page. I get the message that there is an HTML:imghack-a [Trj] threat.
One of my websites (Joomla) is being blocked by Avast when I try to go to the administrator page. I get the message that there is an HTML:imghack-a [Trj] threat. I guess its a trojan, but I cannot find any information about it on the net. When I log on with FTP and look at both the dates and the server-logs I cannot find any discrepancies or illegal activity.
Does anyone know what this is and where to look?
Thanks
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The "imghack" description would lead me to believe that you've had a malicious image, or script masquerading as an image, on your web site.
Do you have any methods for users or visitors to post their own images on your web site?
Check your database. There's a chance you've been hit by a SQL Injection and that would not be obvious by looking at FTP and most server logs. With the popularity of Joomla, Wordpress, etc there have been a lot of automated hacks targeting user friendly CMS software. I read something the other day that most malware gets installed to web users by legitimate websites that don't know their database has been compromised. Will post a link if I find the article again.
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