I'm surprised this card - at least from my experience - doesn't see play. Cyber Threat is great in any anarch deck attempting to bankrupt the Corp through forced ICE rezzing. For 1, you can give the Corp two pretty bad choices: Rez a piece of ICE without making the runner suffer its effects unprepared or give the runner one free access. This effect is somewhat lessened once you're staring at 2-3+ layers of ICE, but it still allows you to make a run with perfect information about the ICE you'll be facing.
The not-so-great side of Cyber Threat is when you take a shot at HQ and the Corp rezzes a Pop-up Window or similar, you've wasted a credit. This could be mitigated if you're running Reina Roja and/or have a Xanadu out, both likely options if you're going for econ denial/ICE taxing.