/usr/share/php/Symfony/Component/Security/Core/Resources/ is in php-symfony-security 2.7.10-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ar.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.az.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.bg.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ca.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.cs.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.da.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.de.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.el.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.en.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.es.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.fa.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.fr.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.gl.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.he.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.hr.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.hu.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.id.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.it.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ja.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.lb.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.lt.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.nl.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.no.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.pl.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.pt_BR.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.pt_PT.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ro.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ru.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.sk.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.sl.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.sr_Cyrl.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.sr_Latn.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.sv.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.th.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.tr.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.ua.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.vi.xlf
/usr/share/php/Symfony/Component/Security/Core/Resources/translations/security.zh_CN.xlf