Phishing damages your reputation and your brand – don't allow it
Phishing, is not only a criminal act, it also damages the brand owner quite substantially.
From an IP perspective, the answer is simple – assert your trade marks (whether registered or not) against the Phishers. That’s if you can find them…
Some of the comments at ArsTechnica talked about this study as an incentive for large companies to band together to find solutions, which seems like a good idea to me.