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For many who installed new OpenX advertising servers in the past 9 days, discover a spin hackers has an effective backdoor that gives them management power over your online servers, sometimes and passwords stored in database, protection scientists informed.
The hidden code in the proprietary open-source ad software was discovered by a reader of Heise Online (Microsoft Translator), a well-known German tech news site, and it has since been confirmed by researchers from Sucuri. It has gone undetected since November and allows attackers to execute any PHP code of their choice on sites running a vulnerable OpenX version.