The identity of the attacker can be concealed, and if the attacker is known, it is not easy to retaliate against a terrorist network with cells in many countries.
Uzbrucējs var palikt nezināms, un, pat ja ir zināms, kas īstenojis uzbrukumu, nav viegli dot atbildes triecienu teroristu tīklam, kam ir atbalsta punkti daudzās valstīs.