On the other side: A stat shared at my most recent tech companies meeting, they are trying to hire more women. 5000 people applied for a single position and 15 of them were women. This was for a high paying tech job.
What does your job description say? What are your company reviews on Glassdoor? What does the whisper network say about what it's like to work as a woman in tech at your company? Using a low estimate of 15% of CS degrees going to women, you'd get 750 women applying. What are you doing to get so many women to give your company an immediate rejection and apply somewhere else?
There were three in my cohort of ~35; and that was much more dense on that programme that was a (more CS-oriented) subset of the EE department's variants - something like 15 of 400 in first year, higher ratio (i.e. fewer female drop-outs/more doing MEng) by the end I think though. Only a few years ago.
And even then, your conclusion is only valid for a graduate entry role - for something more senior you'd need to at least look at grad rates further back, if not what happens to people once in industry. (We've also assumed 100% grads - or even male/female anyway - do apply to industry at all, vs. not, or something else, or staying in academia, etc. I expect that's roughly true though.)