Koukaku Kidoutai: Stand Alone Complex, RD Sennou Chousashitsu Recommendations
Both are futuristic and deal with cyber crime/environments. Although Real Drive isn't a countermeasure against terrorists, it does deal with the unknown [metal] that is threatening environment and people's consciousness.
First and foremost are both from Production IG.
Real Drive and GitS both deal with levels of consciousness and technological settings. Even though the technology can be seen as cold and unnatural, there is a poignant emotional element in both series.
They also both have the concept of "diving". Layers of the net can be accessed in an almost metaphysical way.