Nick has written in to warn us about a fake IRS scam that lately has been targeting nonresident aliens (e.g. teachers and researchers) working in the U.S., as well as American citizens working abroad. In the scam, which has been going on since at least 2002 (pdf), the target receives a faxed request from the IRS to provide his name, SSN, and pretty much every other bit of data you’d need to take over a person’s financial identity.