Character Operations Manual Errata has a big change for Biohackers. Completely changes the genetics field of study. A lot of other changes in the errata as well.
https://paizo.com/starfinder/faq
Page 45: In the biohacker's genetics field of study, replace the text for the inhibitor with the following.
You deliver a DNA-twisting or material-altering chemical nanite compound into a creature's body, increasing the damage it takes from one energy type (your choice). If the creature takes the chosen type of energy damage, it takes additional damage of the same type equal to half your level (minimum 1). This biohack doesn't increase the damage a creature takes from natural hazards or environments, only damage from energy attacks, spells, and other abilities.