Your blood pressure spikes. This is the sixth time this week.

You run a full scan. It finds seven more threats hiding in your registry, your startup folder, your scheduled tasks. They’ve been living there for days, phoning home to a server in a country you can’t pronounce, slowly turning your machine into a zombie for someone else’s botnet.

You hesitate. Last week, you needed a PDF converter for a work file. You googled, clicked the top result (not an ad, you swear), hit download, and clicked through the installer quickly because your boss was calling. Standard stuff. Everyone does it.

And you never, ever download a PDF converter again.

You call your friend who “knows computers.” They ask one question: “Have you downloaded anything sketchy recently?”

But for weeks afterward, every time a notification appears—a calendar reminder, a software update, anything—you flinch. Just a little. Just enough to remember.

Threat: Trojan.PDF.Gen. File: C:\Users[You]\AppData\Local\Temp\tmp_2784.exe

The antivirus cleans them. Reboot. Another pop-up.