I vehemently disagree with (appropriately named) @XxAuroraUser69xX. I suspect that his review might be a joke...at least, I hope so. Because Aurora is not "one of the better icebreakers", it is actually one of the worst. For the sake of the newer players, allow me to say why.
For the sake of argument, lets compare Aurora to the best dedicated barrier-breakers from the other factions: Snowball out of Shaper, and Corroder out of Anarch. Battering Ram is also about on par with these, provided you have the memory for it.
Clearly, Corroder is better than Snowball, unless the corp misplays and stacks multiple barriers on the same server, because the have the same cost to boost and break but Corroder is cheaper to install and has an extra strength.
But it's equally clear that Aurora is worse than Snowball. When you boost strength, Aurora is significantly less flexible. Sure, if you're breaking a Bastion it's 1 cheaper to get it up to strength, and 2 cheaper against a Hadrian's Wall...but you have to pay 1 more against a Himitsu-Bako. The real killer, though, is that you have to pay 2 instead of 1 for every subroutine. So even if you are breaking a Bastion or a Hadrian's Wall and you can take full advantage of Aurora's more efficient boost cost, the more expensive subroutines are going to wipe those savings out.
No matter what ICE the corp is playing, it's always going to cost you more to break it with Aurora than with Snowball or Corroder. As such, any Shaper or Anarch who plays Aurora needs to have his or her head examined. Maybe that's okay, though, for Criminals who want to save influence, or just need a fracter as a support for an AI breaker or to turn off Wraparound.
Enter Breach. Cheaper to install, higher base strength, in-faction. It ranks favorably with Corroder on weaker barriers, and absolutely mops the floor with big barriers like Curtain Wall and Wotan due to it's juicy 2-for-4 boost and 2-for-3 break. The only catch is that you can't use it against remote servers. But for the faction with Inside Job, Femme Fatale and similar shenanigans, you can easily make it a whole game without ever needing to break a barrier on a remote.
I won't say that you should never ever play Aurora...but if you ever find yourself needing to use it, you've probably messed up somewhere and should stop and think carefully.