> what should be done about open weight bioweapon and cyber-offense capabilities?

In my opinion, the governments should deploy open-weight AI countermeasures. Because it seems to me that it is impossible to efficiently fight AI-powered criminals without AI.

When only AI-restricting regulations would be put in place, the criminals would, in my opinion, just ignore it. We as a society have a difficult time tracking even the illegal gun or drug dealers. I cannot imagine how could one hope to "regulate" something that can be downloaded as a file and run on a computer.

These AI countermeasures should be open because it provides transparency as to whether the countermeasures actually work. Independent testing, tuning, refining or retraining is then possible.

If the closed models were used instead, their provider could at any point in time shut down the entire operation. Or sabotage it under the hood.

The important part is that with the closed, black box, proprietary models, one can never know what they are being served.