Corporate security drones are a type of synthetic employed by the Weyland-Yutani Corporation for security operations. Owing to their role, they possess combat programming uncommon to most synthetic models. Visually, they are very basic in appearance, presumably an intentional design choice because of their expendable nature and the company not wanting to waste extra expense. As such they overall look similar to the crudely-designed Working Joe androids manufactured by Seegson. Unlike Joes, however, they seem to possess the same amount of intelligence as any normal synthetic, with at least one security droid, Davis One, breaking its programming and gaining its own personality and free will.
Overall they seem to have more in common with combat androids and can even be called as such since they are built for combat as well as security. Although being unable to physically feel pain, their systems are built to correspond to certain injuries and suggest alternative behavior for greater effectiveness, or even retreat from battle if necessary.
Later years saw Weyland-Yutani employ the use of more advanced security drones, with Davis noting that they do not use a "nearfield" and are "nothing like" his model.