It is well established that interdiction fields, among other things, prevent or impair attempts to open wormholes. What is less clear is how they affect already-open wormholes.
Some people will probably just assume that activating an interdiction field next to an open artificial wormhole will collapse it. However, interdiction fields work, as I understand, by making space more rigid, so to speak, and resistant to effort to change its structure - regardless of what that structure may be at the moment the field is activated, which may not be "flat".
Most devices affected by interdiction fields, like CDD or fold drives, is constantly changing space. A wormhole, once opened, however, just sits there. Since collapsing a wormhole, rather than holding it open, would mean changing the structure of space, wouldn't an interdiction field serve to prop open an existing wormhole, and make it harder to collapse?
If so, then, for example, if ship A opens a wormhole and flees through it, ship B, in hot pursuit, could use an interdiction field to prevent ship A from closing the wormhole behind it before ship B can follow it.
I first brought up this point in the discussion of the Rift Generator tech, but I think this question deserves a more general, and more direct, answer.