The ornamental design for a cableguardrailsecuritydevice, as shown and described.
FIG. 1 is a perspective view of a cable guardrail security device, shown with a lock installed thereon to represent an exemplary environment of use.
FIG. 2 is a right side elevation view thereof, the left side being a mirror image thereof;
FIG. 3 is a top plan view thereof, the bottom plan view being a mirror image thereof;
FIG. 4 is a rear elevation view thereof; and,
FIG. 5 is a front elevation view thereof.
The broken lines depict a portion of the cable guardrail security device that forms no part of the claimed design. The lock is shown in FIG. 1, in broken line representation, to illustrate environmental structure and forms no part of the claimed design.