Both a silent strike and a zero‑day exploit are all about staying under the radar. In the field you avoid noise, keep the fire‑power low and move when no one’s looking. In code you hide the payload, use encryption, piggyback on legitimate traffic and erase logs. The common tricks are low‑profile entry, plausible deniability, and a clean exit. Whether it’s a rifle or a packet, the goal is the same: do the job and leave no trace.