by argus88
I guess from your concluding paragraph you also realized this after the fact. As for this thoughI would've had better luck with PrioReq in hand, as a 1/4 draw is worse odds than a 1/3 keeping his Corroder.
What you should actually have done is not played the odds at all. Just lead with the Private Security force and keep hitting him until you get that Corroder. Whenever you have a play with no unknowns (an install) and a play with unknowns (damage) you should start with the uncertain one.
Then, if you'd hit the Corroder with your first or second click you could choose to install the agenda to keep a lucky HQ access from losing it for you, but if you didn't (as in this case) you would know to use PSF again for that third point of damage.