You can strike at foes that attack you using their superior reach by targeting their limbs or weapons as they come at you.
Base attack bonus +1
You can ready an action to make a melee attack against a foe that attacks you with a melee weapon, even if that foe isn’t within your reach.
Starfinder Core Rulebook © 2017, Paizo Inc.; Authors: Logan Bonner, Jason Bulmahn, Amanda Hamon Kunz, Jason Keeley, Robert G. McCreary, Stephen Radney-MacFarland, Mark Seifter, Owen K.C. Stephens, and James L. Sutter, with Alexander Augunas, Judy Bauer, John Compton, Adam Daigle, Crystal Frasier, Lissa Guillet, Thurston Hillman, Erik Mona, Mark Moreland, Jessica Price, F. Wesley Schneider, Amber E. Scott, and Josh Vogt.