Ditto. I think you could work your way through most cable locks with vise grips or pruning shears given a little time. Go for a U-lock, or if it has to be something longer, heavy chain.
I've seen a couple of people here write that they used cable locks when touring so they could run in a store for a few minutes or something, but not one you'd want to trust for any length of time.
And $50 will get you a good U-lock.
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"be careful this rando stuff is addictive and dan's the 'pusher'."