Customers of an UK-based web host called Daily Internet Services, had their websites defaced by hackers, who replaced their index pages with an image featuring Tux, the Linux penguin mascot. The company has restored the affected pages from back-ups and is currently investigating the attack.
The hosting company is still investigating how the hack was performed, but in the meantime it has strengthened the security polices on its servers. "We are confident there will be no repeat events as all servers are locked down," it notes.
There is also reason to believe that the PHP distribution played some role, as it has since been upgraded to a newer version. As a result, some features or modules might not be working as expected, the company advises. Additionally, database-driven websites could experience slowdowns, because some of the servers have been removed from the cluster for further investigations.
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