He recalled how he'd deliberately installed several such things throughout the building, as mnemonic self-tests.

Still, that just refers to the ones Avery deliberately installed in the rest of the system.

Then it is reencrypted using a certificate that every corporate browser has been deliberately installed with in order for the browser not to complain.

And it turns out it's because it uses actual Java, and I've deliberately not installed Java for Firefox's use because I just don't think I need it, and I don't.

Also, I have deliberately installed Windows 2000 on new laptops so I could run PLC programming software that will not run correctly on any newer version of Windows.

Even if it's not a hardware keystroke logger, it could be something in software that somebody else has deliberately installed to hack the machine.

To minimize the risk, most household plumbing is deliberately installed away from unheated areas.