/usr/share/php/Symfony/Component/Security/ is in php-symfony-security-acl 3.0.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/Security/Acl/
/usr/share/php/Symfony/Component/Security/Acl/Dbal/
/usr/share/php/Symfony/Component/Security/Acl/Dbal/AclProvider.php
/usr/share/php/Symfony/Component/Security/Acl/Dbal/MutableAclProvider.php
/usr/share/php/Symfony/Component/Security/Acl/Dbal/Schema.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/
/usr/share/php/Symfony/Component/Security/Acl/Domain/Acl.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/AclCollectionCache.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/AuditLogger.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/DoctrineAclCache.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/Entry.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/FieldEntry.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/ObjectIdentity.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/ObjectIdentityRetrievalStrategy.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/PermissionGrantingStrategy.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/RoleSecurityIdentity.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/SecurityIdentityRetrievalStrategy.php
/usr/share/php/Symfony/Component/Security/Acl/Domain/UserSecurityIdentity.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/
/usr/share/php/Symfony/Component/Security/Acl/Exception/AclAlreadyExistsException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/AclNotFoundException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/ConcurrentModificationException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/Exception.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/InvalidDomainObjectException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/NoAceFoundException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/NotAllAclsFoundException.php
/usr/share/php/Symfony/Component/Security/Acl/Exception/SidNotLoadedException.php
/usr/share/php/Symfony/Component/Security/Acl/Model/
/usr/share/php/Symfony/Component/Security/Acl/Model/AclCacheInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/AclInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/AclProviderInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/AuditLoggerInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/AuditableAclInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/AuditableEntryInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/DomainObjectInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/EntryInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/FieldEntryInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/MutableAclInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/MutableAclProviderInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/ObjectIdentityInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/ObjectIdentityRetrievalStrategyInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/PermissionGrantingStrategyInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/SecurityIdentityInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Model/SecurityIdentityRetrievalStrategyInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/
/usr/share/php/Symfony/Component/Security/Acl/Permission/AbstractMaskBuilder.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/BasicPermissionMap.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/MaskBuilder.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/MaskBuilderInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/MaskBuilderRetrievalInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Permission/PermissionMapInterface.php
/usr/share/php/Symfony/Component/Security/Acl/Util/
/usr/share/php/Symfony/Component/Security/Acl/Util/ClassUtils.php
/usr/share/php/Symfony/Component/Security/Acl/Voter/
/usr/share/php/Symfony/Component/Security/Acl/Voter/AclVoter.php
/usr/share/php/Symfony/Component/Security/Acl/Voter/FieldVote.php
/usr/share/php/Symfony/Component/Security/Acl/autoload.php