This seems promising in flatline Jinteki. 3 credits for a str-5 sentry is a good deal, and they can't afford to break this too many times. They will probably run through it, and the goal is to boost the trace when you know you can kill them as a result.

Compare this to Pup; it costs 2 more, is similarly taxing when they don't use a breaker, but is much harder to Parasite and has upside in that you can boost the trace to ensure some net damage.