Phishing Explained: How to Check a Domain for Threats

You get an email from your bank asking you to reset your password. You click the link, and the website looks exactly like your bank's login page. But wait—is it real?

This is a classic example of phishing. Phishing attacks are designed to trick you into giving up sensitive information like passwords and credit card numbers. One of the best ways to protect yourself is to learn how to check domains for threats.

What is Phishing?

Phishing is a type of cyber attack where attackers pretend to be a trustworthy entity (like a bank, a company, or a friend) to deceive victims. They often use fake websites hosted on malicious domains.

How to Spot a Phishing Domain

Attackers use clever tricks to make their fake domains look real. Here’s what to look for:

1. Misspellings (Typosquatting)

Attackers often register domains that look very similar to popular ones.

• Real: example.com
• Fake: examp1e.com or examplle.com

Always check the spelling in the address bar carefully.

2. Strange Extensions

While legitimate sites often use .com, .org, or .net, phishing sites might use cheaper or less common extensions like .xyz, .top, or .club. While not all sites with these extensions are bad, they warrant extra caution.

3. The "Lock" Icon Isn't Enough

In the past, a green lock icon meant a site was safe. Today, anyone can get a free SSL certificate. A lock icon means your connection is encrypted, but it does not mean the site itself is legitimate. A phishing site can have a lock icon too!

How to Check a Domain for Threats

If you're suspicious of a link, don't click it. Instead, copy the link and check the domain using a reputation tool.

Domain reputation tools analyze a domain's history, age, and associations with known threats.

• Check Domain Age: Phishing domains are often brand new. If a "bank" website was registered yesterday, it's almost certainly a scam.
• Scan for Malware: Security scanners can tell you if a domain is known to host malware or phishing pages.

If you have already clicked

A phishing attempt that reached its target is a security incident, not an embarrassment, and the first hour matters.

1. Change the credential you entered, from a device you trust, and enable multi-factor authentication on that account if it was not already on.
2. Check where that password was reused. Attackers try stolen credentials against other services within minutes; every account sharing the password needs a new one.
3. Look at what the site did. If you downloaded or ran anything, treat the device as compromised until it has been scanned and, ideally, reimaged.
4. Report the domain. To your security team, to the impersonated brand, and to a phishing tracker; a report shortens the window for the next target.
5. Keep the e-mail. Headers, links and the sending infrastructure are the evidence a security team pivots from to find the rest of the campaign.

A domain lookup on the link you clicked tells you quickly whether the domain is already known as phishing infrastructure, how old it is, and what else shares its hosting — the facts that decide how far the response has to go.

Stay Safe Online

Phishing is a serious threat, but with a keen eye and the right tools, you can spot the fakes. Always double-check domains before entering your personal information.

Suspicious link? Check it instantly with our Domain Reputation Checker.