Chinese cybersecurity researchers have uncovered a PHP backdoor, Glutton, believed to be from persistent threat goup Winnti. The malware has been found in China, the US, Cambodia, Pakistan and South Africa, undetected for over a year. The modular code operates within PHP or PHP-FPM optimised process handling on web servers, eliminating digital footprints and avoiding detection. Glutton can be used to extract data or inject malicious code into frequently used PHP frameworks.

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