A gutter protection assembly includes a gutter and a gutter protection. The gutter includes a front wall, a bottom wall and a rear wall, the rear wall having a crimp protruding outwardly from an outer face of the rear wall of the gutter. The gutter protection device includes a front portion engageable with the front wall of the gutter, and a rear portion. The rear portion includes a gutter wall-engaging section having an outer downward segment provided with a hook. The hook is configured to engage with the crimp to provide a support for the gutter to hang from. The gutter assembly is securable to a supporting structure through an outwardly extending section projecting upwardly from the gutter wall-engaging section and extending above the rear wall of the gutter when in the gutter protection assembly, with the gutter hanging from the gutter protection device.