From his Substack about page:
I’m Spencer Ackerman, author of Reign of Terror: How The 9/11 Era Destabilized America And Produced Trump. I’ve reported on the War on Terror, pretty much to the exclusion of everything else, since 2002, for The New Republic, TPM, the defunct Washington Independent, Wired, The Guardian, and the Daily Beast (where I remain a contributing editor), as well as for an old blog of mine called Attackerman.