So you can get scripts that now reduce cooldowns?

Had a Trist in a game yesterday, level 7 when she came top (she was playing mid). She W's into the fight, doesn't get a kill or assist and 6 seconds later W's again. I've played a fair bit of Trist and theres no way the cooldown is that low at level 7. The other question I have, is if Riot know this happens and other game developers also know about the sites that sell hacks, why don't they do something about it? Surely there is something legally they can do as it directly interfers with their product.
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