Our source is Dr. Thallia Thorn, a xenoarchaeologist in the employ of the Liberty Free Republic. She has conducted research on the Sudbury anomaly under the auspices of Xeno Alliance Commander Morreti. She has been vetted and tested by Section 8 and has proven herself reliable thus far.
The identity of her source remains unknown. Whether Dr. Thorn will be willing to divulge this information remains to be seen, though the comms logs provided by her clearly indicate that the source is an insider, likely a member of Task Force Prometheus.