An individual asserting to be an anonymous whistleblower provides intricate insights into the biological aspects of the extraterrestrial beings he researched.
He claims from the late 2000s to the mid-2010s, he worked as a molecular biologist for a national security contractor in a program to study Exo-Biospheric-Organisms (EBO).
The aim of the program was to elucidate the genome and proteome basis of these organisms. Although the study of OBCs has been going on for decades in other programs, the new high-throughput DNA sequencing technologies of the late 90s unblocked stagnant research in this area. Since then, several breakthroughs have led to significant advances in our understanding of the genome and proteome of these beings. What we've learned so far has enabled us to outline some disconcerting perspectives about our place in this universe. Briefly, we've discovered that the EBO genome is a chimera of genomes from our biosphere and from an unknown one. They are artificial, ephemeral and disposable organisms created for a purpose that still partially eludes us.
His full post is linked below.
https://www.reddit.com/r/aliens/comments/14rnjoa/from_the_late_2000s_to_the_mid2010s_i_worked_as_a/