Stillborn Harvest was a terrorist attack by the Kasei Freeholders on Bioforge Hivegen's bio-reactors in 46 BFC. The attack used a novel enantiomeric fungus which was undetectable to Bioforge's security, marking the first known release of a mirrored chirality organism outside of a laboratory.

In the early 40s the Freeholders began developing a plan to break the corporate food monopoly which had arisen from the economies of scale and patents on many of the algae proteins, and insert themselves as a primary supplier of the foodstuffs they were capable of producing in large quantities. Their engineers created Aspergillus D-kaseia, a bio-engineered organism with structure a mirror image of the common Earth mold Aspergillus. Being D-chiral, it was metabolically and immunologically invisible to Earth's L-chiral biology and antifungal biosecurity systems. This was refined in their genclaves over many generations until it was sufficiently targeted.

In 46 BFC they introduced D-kaseia into the protein paste producing yeast vats in the more distant and profitable southern hemisphere colonies of Hellas Planitia, Planum Australe, and the Eridania Sea mining complex. The mold did not immediately kill the yeast, which would have triggered alarms, but instead secreted an achiral enzyme inhibitor which preventing the yeast from synthesizing essential vitamins and amino acids and made the resulting protein paste nutritionally worthless. Signs of widespread malnutrition took many days to sweep the colonies, and the Freeholders' untainted food caches were then used to distribute food aid to members of their mutual aid societies, which rapidly grew in size.

In response the Peacekeepers were used to ship food supplies to the affected colonies and to destroy most of the Freeholder's above ground infrastructure, precipitating an end to their independent existence outside of the colonies.