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Resolve an FTP/site blockage
This guide explains why an FTP account (and most of the time also Web Hosting) can suddenly become blocked.
Server Security
Infomaniak uses an antivirus solution on all shared servers to combat virus transmissions via FTP and scripts.
It detects potential FTP account hacks or simply the intentional or unintentional sending of files (WordPress themes, fraudulent modules, etc.) containing lines of code or malicious inclusions.
Detection of Malicious Files
The antivirus scans all files sent below 1 MB to prevent any upload of viruses / spam scripts / etc., and in case of detection, the FTP account password is automatically changed and the incriminated files on the server are locked (FTPban).
The FTP server then returns a message to the FTP client like this:
550 Virus Detected and Removed: botnet.infomaniak.5.UNOFFICIAL
or
550 Virus Detected and Removed: winnow.botnet.ff.trojans.15900.UNOFFICIAL
It is strongly recommended to clean your site and analyze what you intended to send to the server.
It is also your responsibility to check if the web applications and CMS you use are up to date. The cause of most hacks comes from security deficiencies in outdated web applications or passwords that are too weak.
To prevent your site from being hacked and blocked again, take the following actions:
- update web applications (WordPress, Joomla, etc.) and used extensions
- remove unused web applications
- change the password for all your FTP accounts
- change passwords to access web applications (WordPress, Joomla, etc.)
- change the password for MySQL database users
- remove MySQL database users that you do not use
- use a different password each time
- use complex passwords with a minimum of 8 characters
- install and use an up-to-date antivirus (regardless of the operating system)
If your site does not work after cleaning, it may be necessary to replace some deleted files with clean files.
Do not republish the same infected files on your hosting because the site would be blocked again.
Learn More
- Manually launch an antivirus scan
- Monitoring and resolving vulnerabilities in hosted scripts