Paper Finds Earth May Have Been Terraformed by "Advanced Extraterrestrials"
Estimates suggest unguided prebiotic chemistry is extraordinarily unlikely to produce life, leaving directed panspermia as a logically open, though less parsimonious, possibility.
Anonymity is the end goal when studying privacy, and de-anonymization is likened to a guessing game where an adversary attempts to identify individuals from a set of candidates.