How to Check If Your Website Is Secure Before It Gets Hacked

Your website loads normally.

The homepage looks good. The SSL padlock is there. Google isn't showing any scary warnings.

So you assume it's secure.

That's exactly where many website owners stop checking.

A website can have HTTPS and still have a vulnerable plugin. It can have a beautiful login page and still expose another user's data through an API. It can pass an uptime check while a critical checkout flow is broken.

I've seen websites that looked completely fine from the outside but had outdated software, exposed admin panels, forgotten subdomains, and API endpoints that trusted whatever ID the browser sent them.

The difficult part isn't making a website look secure.

It's finding the things that aren't obvious.

And you don't need to be a penetration tester to start.

What does it actually mean for a website to be secure?

There's no single “secure” switch you can turn on.

Website security is a collection of controls that protect different parts of the system.

Your SSL certificate protects the connection between a visitor and your server.

Authentication controls who can sign in.

Authorization controls what that person is allowed to do.

Input validation helps prevent malicious data from reaching sensitive parts of your application.

A WAF can block some malicious HTTP requests before they reach your application.

Monitoring tells you when something changes or stops working.

Backups help you recover when prevention fails.

That's why I don't like website security reports that reduce everything to one big percentage.

A site can have excellent TLS configuration and a serious authorization bug at the same time.

So when someone asks, “Is my website secure?”, the better question is:

“What can an attacker discover, reach, or manipulate right now?”

That's what you should test.

Start with the things an attacker can see from the outside

Before looking at source code, look at your website the way a stranger would.

Start with the domain.

Check:

example.com
www.example.com
Login pages
Admin panels
API endpoints
Public subdomains
Old staging environments
Development environments
File upload pages
Public dashboards

Forgotten subdomains are especially interesting.

A company might have:

www.example.com
app.example.com
api.example.com
staging.example.com
dev.example.com
old.example.com

The main website may be perfectly patched while staging.example.com is running software from two years ago.

That's still part of your attack surface.

If you manage your own server, you can also inspect exposed services with a tool such as Nmap:

nmap -sV example.com

This can identify services and their versions that are reachable from the network.

Don't scan random systems you don't own or have permission to test. For your own infrastructure, though, it's a useful way to see whether something is exposed that you didn't expect.

And here's an important distinction:

An open port isn't automatically a vulnerability.

An internet-facing HTTPS server needs an open port.

The question is whether the service behind that port should be public, properly configured, and patched.

Check HTTPS, but don't stop at the padlock

HTTPS is the first thing most people check.

It's also one of the easiest things to misunderstand.

Run:

curl -I https://example.com

You'll get response headers from your server.

Look for security-related headers such as:

Strict-Transport-Security
Content-Security-Policy
X-Content-Type-Options
Referrer-Policy

For example:

Strict-Transport-Security: max-age=31536000; includeSubDomains

HSTS tells compatible browsers to use HTTPS for your site for the specified period. The max-age value above represents one year. (developer.mozilla.org)

Content-Security-Policy can restrict where browsers are allowed to load scripts and other resources from.

X-Content-Type-Options: nosniff helps prevent browsers from incorrectly interpreting certain resources as a different MIME type.

These headers are useful.

But here's the mistake:

Security headers don't make vulnerable application code secure.

A website can have every recommended header and still have SQL injection or broken authorization.

Think of headers as one layer, not the security system.

Check for known vulnerabilities in the software you actually run

This is where website owners and developers often underestimate the problem.

Your website isn't just your homepage.

It's an application made from components.

For a WordPress site, that might mean:

WordPress core
PHP
Plugins
Themes
Web server
Database
CDN
Third-party integrations

For a custom SaaS application, it might mean:

Node.js
Python
PHP
Frameworks
npm packages
Composer packages
Database drivers
Authentication libraries
Cloud services

Every component can introduce vulnerabilities.

OWASP's 2025 Top 10 ranks Vulnerable and Outdated Components as a major application-security risk and recommends continuously tracking versions and known vulnerabilities rather than relying on occasional checks. (owasp.org)

For a Node.js project, start with:

npm audit

For a Python project, your dependency tooling can similarly identify packages with known vulnerabilities.

For WordPress, check the versions of core, plugins, and themes and compare them against current security advisories.

The important part isn't finding a giant number of warnings.

It's identifying which vulnerabilities are actually exploitable in your environment and fixing the important ones first.

A critical vulnerability in an exposed plugin is very different from a low-severity issue in an unused development dependency.

Test authentication, then test what happens after authentication

A login page tells you almost nothing by itself.

You need to test what a logged-in user can actually do.

Create two normal accounts if your application supports them.

Call the same API as both users.

Suppose User A has:

/api/projects/4821

Now change the ID:

/api/projects/4822

What happens?

If User A can access User B's project, you've found an authorization problem.

This class of issue is often called BOLA, or Broken Object Level Authorization. OWASP's API Security Top 10 describes it as a situation where an API fails to properly verify whether the authenticated user is authorized to access a specific object. (owasp.org)

The request might look completely legitimate:

GET /api/projects/4822
Authorization: Bearer <valid-user-token>

The token is valid.

The user is authenticated.

The request is syntactically correct.

And the request can still be unauthorized.

That's why authentication and authorization need separate tests.

I'd also test:

Normal user → admin endpoint
User A → User B's resource
Unauthenticated user → private endpoint
Deleted user → old API token
Regular user → role-changing endpoint
User → another organization's data

You don't need to exploit anything complicated.

You're checking whether the application's own rules actually hold.

Look for the things developers accidentally leave behind

This is one of my favorite checks because it catches boring mistakes.

Search for exposed files and development leftovers:

.env
.git/
backup.zip
database.sql
phpinfo.php
debug.log

You should never assume a sensitive file is safe just because nobody links to it.

Attackers don't need your navigation menu.

They can request URLs directly.

A public .git directory can potentially expose source code and commit history. A backup archive can contain database credentials. A debug endpoint can reveal environment information that makes another attack easier.

Also check whether your application exposes verbose errors.

A production response like:

Database connection failed:
mysql://admin:password@internal-db:3306/app

is obviously a disaster.

But even less dramatic information can help an attacker understand your framework, database structure, file paths, and internal services.

Production errors should be useful to your logs, not to the person attacking your application.

Don't forget APIs, file uploads, and business logic

Automated scanners are useful, but some of the most interesting security problems live in application behavior.

Take file uploads.

If your website allows users to upload PDFs, profile pictures, invoices, or other files, ask:

Where does the file go?

Who can access it?

Can another user guess its URL?

Does the server validate the file type?

Can an uploaded file execute as code?

The same thinking applies to business logic.

Suppose your SaaS has a discount endpoint:

POST /api/coupon/apply

The endpoint works.

Authentication works.

Authorization works.

But can a customer apply the same one-time coupon 50 times?

That's not necessarily a traditional “vulnerability” in the way people imagine one.

It's a business-logic failure.

And an automated scanner may not understand what “one-time coupon” means.

This is why good security testing needs both automated checks and human reasoning.

Check what your customers actually experience

Here's another thing I'd change about traditional website monitoring.

Checking whether the homepage returns 200 OK isn't enough.

Imagine your website is technically online:

GET /
→ 200 OK

But the login button is broken.

Or Stripe checkout fails.

Or the contact form throws a JavaScript error.

Or the browser gets stuck after submitting a form.

Your uptime monitor says everything is fine.

Your customer says your website is broken.

These are different things.

Real-browser monitoring can test actual user journeys rather than just pinging a URL.

For example:

Open homepage
    ↓
Click Login
    ↓
Enter test credentials
    ↓
Submit
    ↓
Verify dashboard appears

That's much closer to what your users experience.

For a business website, I'd monitor the pages that actually matter, not just the homepage.

A practical website security check you can run today

If you own or manage a website, here's where I'd start.

First, check the external attack surface.

Find your public subdomains and services. Remove anything that shouldn't be public.

Second, inspect HTTPS.

Check the certificate, expiry date, hostname coverage, redirects, TLS configuration, and security headers.

Third, identify your software.

Know your WordPress version, plugins, frameworks, packages, server software, and other components.

Fourth, check known vulnerabilities.

Don't wait for an attacker to tell you that one of your dependencies is vulnerable.

Fifth, test authentication and authorization.

Use multiple accounts and try accessing resources that shouldn't belong to each account.

Sixth, inspect sensitive files and configuration.

Look for exposed .env, Git repositories, backups, debug pages, logs, and development endpoints.

Seventh, test important user journeys.

Finally, keep monitoring it.

Because a security check is a snapshot.

Your website isn't static.

A new plugin can introduce a vulnerability tomorrow. A certificate can expire next month. A developer can deploy an API endpoint this afternoon. A third-party service can break without touching your code.

That's why website security works better as a lifecycle than as a one-time audit.

The best security check is the one you keep running

You don't need to scan your website every five minutes.

You do need to know when something meaningful changes.

For a small website, that might mean vulnerability scanning, SSL expiry monitoring, uptime checks, and periodic manual testing.

For a SaaS application, I'd add dependency and code scanning before deployment, API authorization testing, and browser-based checks for critical user flows.

And when a serious vulnerability is found, don't just mark it as “detected.”

Fix it.

That's the part security dashboards sometimes hide.

Finding a vulnerability is useful.

Knowing what to do about it is better.

For website owners and developers who don't want to maintain a collection of separate security tools, Torlyx combines vulnerability scanning, SSL and uptime monitoring, real-browser checks, WAF protection, and pre-deployment code scanning in one workflow.

The goal isn't to give your website a pretty security score.

It's to find problems while you still have time to fix them.

If you want to see what an external security check finds on your own site, run a free scan first.

Then take the highest-risk finding and verify it yourself.

That's a much better place to start than waiting for the first “your website has been hacked” email.

FAQ

How can I check if my website is secure?

Start with HTTPS, exposed services, software versions, known vulnerabilities, authentication, authorization, sensitive files, and important user journeys. Automated scanners can help find common problems, but manual testing is still needed for application logic and permissions.

How do I scan my website for vulnerabilities?

You can use a website vulnerability scanner to check for known security issues, exposed technologies, misconfigurations, and other common weaknesses. For applications you control, combine automated scanning with dependency checks and manual tests of authentication, authorization, APIs, and business logic.

How often should I check my website security?

Don't treat security as an annual checklist. Run automated checks continuously or regularly, scan before major deployments, monitor SSL and uptime, and investigate whenever you add software or make significant application changes.