This is a Criminal card that somehow ended up the color orange. Let me explain.
Imp, Wanton Destruction, Scrubber, Edward Kim: Humanity's Hammer, and Whizzard: Master Gamer. These are all orange cards that do one very important thing: they trash stuff. That's only a few of the Anarch options available for doing so too; there's many more. Some of those cards do it outright, and some give you the resources you need to do it. Either way, when they help you destroy something, it is a guaranteed destruction. Credit Crash is not.
With Credit Crash, you can't just rush into a server guns blazing and wreck whatever you like, as is often the Anarch way. Unlike the cards mentioned up above, Credit Crash is a bit harder to use, and requires some planning. Some set-up first. It requires you to either have a lockdown on the corps credit pool, or for you to be using Credit Crash to do that exact thing, and have a follow-up strike on the ready. And which faction loves to have their hands in the corp's bank, with cards such as Account Siphon, Forged Activation Orders, and High-Stakes Job, just to name a few? Criminals, that's who.
Account Siphon and then use Credit Crash to destroy their SanSan City Grid for free. Or Emergency Shutdown an ice protecting an Eve Campaign, and make the corp choose between re-rezzing that ice to stop you, or having the money to keep their asset alive. There's plenty of possibilities, and Crims are the ones with them most readily at their fingertips. The card is also only one influence, and one credit to use, so splashing a copy or two into a crim deck built to use it is a pretty good deal.
Just be careful about using this card in a run on R&D or HQ. Unless you're 100% sure about what you're about to access, you could hit something like a Subliminal Messaging, or Jackson Howard. What a waste.