Very quickly, we have very recently started to make some supports available to witnesses, especially witnesses who come forward. I don't know if it's necessarily the situation you're describing, but for witnesses who come forward in the context of very difficult studies, very emotional studies, where there's something very traumatic that they come to share, we've been making available to them the same sorts of supports that would be available to members or other members of the House administration. However, it's a relatively limited thing at present.
In terms of retribution, any sort of retribution against a witness for testimony they give could be punished as a breach of privilege. The expectation is that witnesses come here to share information so that Parliament can do its job, and anybody who seeks to silence them or to punish them for that is doing a disservice to Parliament and to the democratic exercise. However, how does that actually occur? What one does in order to ensure that they're protected is challenging.
What we're used to seeing are reprisals from employers—like if you are a whistle-blower and are sanctioned for coming forward—but to then be subject to attacks in the public sphere online is a different order. It's maybe not something we're as familiar with or as well equipped to deal with at the moment.