The Neptune Law of Survival; no matter how big you are, there is always something even bigger.
Squids can’t do much to defend themselves other than constrict and squeeze something like a python.
No teeth, no spikes, no venom.
That beak though would make a macaw envious!
They’ve got a hell of a beak, though. They are the only serious predator of adult Sperm Whales. Grab them and drown them.