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According to the news, attackers are using a vulnerability in a popular dependency used by modules to take control of PrestaShop sites.
Fortunately, PHPUnit is a development library and is not needed for the normal function of your site and can be deleted, so you can simply delete all the “phpunit” directories found above. This should help close the attack vector.
PHPUnit Remover help you remove all the PHPUnit directories on your website and make it safe!