Spiegel: Trading in CO2 emissions allowances has been hampered in several European countries as a result of a phishing scam. Sneaky cyber-thieves have made millions by fraudulently obtaining European greenhouse gas emissions allowances and reselling them. The scam has hampered trading of the credits, which are seen as an important tool in curbing climate change, in several European countries. Most Internet users are familiar with the e-mail scam known in the jargon as “phishing.” A …