Hello, SFIA audio listeners. In this month's Nebula exclusive, big alien theory,

we're asking the reason alien civilizations might be rare is because most aliens are huge.

To hear it and every episode early and ad-free, plus hours of bonus content,

check out go.nebola.tv slash Isaac Arthur and use my code, Isaac Arthur.

This episode is sponsored by Dashlane.

Every time somebody discovers something new and wondrous, someone else finds a way

to use it to attack or exploit others. Fortunately, other folks find ways to foil those attacks,

eventually.

So today we'll be looking at cybersecurity, the basic concepts and current challenges,

and some of the challenges will face further down the road.

One of the biggest challenges right now with cybersecurity isn't that we don't have a lot

of the tools, but that most folks don't actually know

they exist or what the threats look like.

As is often the case with any field, especially science and technology, there's a lot of specialized

terminology that develops that can add a certain layer of the arcane when folks outside

the field try to understand it, so we'll spend some time

today discussing some of the terms and giving some plain English explanations and analogies.

Now sometimes technospeak is unavoidable as you have a concept that doesn't really exist

outside a field or using an existing parallel term might cause confusion.

However, often it is an example of what Mark Twain's criticism of using $5 words when

50-cent ones will do, and I try to avoid doing that on this show, unless the 50-cent word

has the letter R in it. A silver lining of having a speech impediment,

...