Abstract: A securing device for securing a door panel and a complementary door frame housing a latch means in a closed configuration against forced entry. The securing device includes receiving means mounted on the length of the door frame and an engaging means mounted on the length of the door panel, wherein a portion of the engaging means is pivotable between a first configuration and a second configuration. In the second configuration the portion of the pivotable engaging means is nested within the receiving means thereby preventing the door from being forced open. The engaging means is moved between the first and second configurations by a latch engaging means which interconnects the pivotable portion of the engaging means with the latch.