Lesson 2 of 720 minutesHands-on

Read a link before you tap it

A fake website can copy every logo, colour and word of the real one. The one thing it can’t copy is the real site’s address. Every web address contains a single part that says whose site it is, and once you know where to look, it takes about two seconds to find. In this lesson you’ll learn to find it in any link, see the address hiding behind any text, and catch letters borrowed from other alphabets.

In this lesson

  • Find the part of a web address that tells you whose site it is
  • See the real address behind a link without opening it
  • Catch the tricks scammers use to make a fake address look right

You’ll need: a phone or computer, and an email or text message that contains a link (any newsletter will do).

The one part that matters

Take this address, the kind that turns up in a fake “your account is locked” message:

https://www.amazon.co.uk.order-help.top/refund?id=48213

It mentions Amazon twice, but it isn’t Amazon’s. Here’s how to read any address:

  1. Skip the https:// at the start.
  2. Find the first single slash after it (here, the one before refund). If there’s no slash, use the end of the name. Everything after that slash is just which page on the site you’re going to.
  3. Look at the name just before that slash, and read it from the right. The last two parts, here order-help.top, are the domain: the name someone registered. That’s whose site it is.
  4. Everything to the left of the domain, here www.amazon.co.uk., was added by whoever owns the domain. They can put any words they like there.
Country endings: some countries use two-part endings, like .co.uk, .com.au or .co.nz. With those, take three parts instead of two: in www.bbc.co.uk/news the domain is bbc.co.uk.

The tricks that make a fake address look right

TrickExampleWhose site it really is
The real name added on the leftpaypal.com.account-check.topaccount-check.top
Extra words around the brandsecure-amazon-account-help.comNot Amazon’s. Hyphens make it a different name.
Letters that look alikern in place of m, or l in place of IA different name that’s easy to misread
Letters from another alphabeta Cyrillic Π° in “pΠ°ypal.com”A different domain that looks identical on screen
Everything before an @https://paypal.com@198.51.100.23/The address after the @. Browsers ignore what comes before it.
A link shortenerbit.ly/3xYzYou can’t tell until it’s opened, so treat it with care

The padlock in the address bar doesn’t help here. It means the connection is encrypted, not that the site is honest: fake sites get padlocks too, free, in minutes. What Is SSL/TLS? explains what the padlock does prove.

Try it yourself Β· part 1

See the real address behind a link

The words you click on and the address they go to are two separate things. A button that says “amazon.co.uk” can lead anywhere. Open an email or text with a link in it, then:

  • On a computer: move the mouse over the link without clicking. The real address appears in the bottom corner of the browser window.
  • On a phone: press and hold the link. A preview opens with the address shown at the top. Read it, then close the preview; don’t tap Open.

Find the domain in that address using the steps above. Does it match the company the message claims to be from?

Try it yourself Β· part 2

Whose site is it?

For each address, find the domain and decide whose site it is. Then open the answer to check. These are examples: don’t type them into a browser.

1. https://www.amazon.co.uk/your-orders

amazon.co.uk, Amazon’s real UK site. The slash comes straight after the name, and .co.uk is a two-part country ending, so the domain is the last three parts.

2. https://amazon.co.uk.order-help.top/refund

order-help.top. Not Amazon. Everything before it is decoration added by whoever registered order-help.top.

3. https://secure-amazon-account-help.com/login

secure-amazon-account-help.com, which is not Amazon’s. It’s one long name that anyone could have registered; the word “amazon” inside it proves nothing.

4. https://login.microsoftonline.com/

microsoftonline.com, which really is Microsoft’s: it’s where many Microsoft work and school accounts sign in. A strange-looking name can be genuine, which is why the safest habit is to sign in from a site or app you already use, rather than from a link.

5. https://bit.ly/3xYz9q

bit.ly, a link shortener. It forwards you somewhere else, and the address doesn’t tell you where. In a message from someone you don’t know, that alone is a reason not to tap.

Big companies buy lookalikes too. To stop scammers using them, large brands often register names that look like theirs. So once in a while a strange name does belong to the real company. You can’t tell which by looking, so don’t try: if a name isn’t one you already know, go to the company’s site or app the way you normally would.

Try it yourself Β· part 3

Catch letters from another alphabet

  1. Open the Lookalike Domain Checker. It reads the characters you give it in your browser and doesn’t visit the site.
  2. Click the sample marked paypal.com (mixed). It looks exactly like paypal.com, but the result says MIXED SCRIPTS: one of the letters is Cyrillic.
  3. Look at ACTUALLY RESOLVES. That’s the coded form, starting xn--, that the name is really stored as. Two names that look the same on screen always have different codes.
  4. Now type the domain from the link you checked in part 1. An ordinary name comes back as PLAIN ASCII. As the tool says, that means no letters are disguised; it doesn’t mean the site is safe. Whose domain it is still matters most.

Key takeaways

  • Whose site it is depends only on the domain: the name just before the first single slash, read from the right.
  • Brand names on the left of the domain, or inside a longer name, prove nothing.
  • Hover over a link on a computer, or press and hold on a phone, to see where it really goes.
  • The padlock means encrypted, not honest.
  • When in doubt, don’t use the link: go to the site or app you already know.

Check yourself

Three questions. Pick one answer each and you’ll see why.

1. What is the domain in https://login.yourbank.com.secure-verify.top/account?

2. A site shows a padlock in the address bar. What does that tell you?

3. Two addresses look identical, but the Lookalike Domain Checker says one has MIXED SCRIPTS. What does that mean?

Next, the link you can’t see at all: a QR code.

This lesson is part of the free course Scams and Staying Safe, licensed under CC BY-NC-SA 4.0: you may share and adapt it for non-commercial use, with credit to ExamineIP and a link to the original.

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