Web security for businesses: common threats and how to protect your site

Web security for businesses: common threats and how to protect your site
Published on 23/06/2026

Your company website works on its own around the clock: it sells, captures leads and represents your brand even when you're away. The problem is that attackers work those hours too. You don't need to be an «interesting» target: most attacks aren't aimed at anyone in particular, they are automated bots crawling the internet non-stop looking for an open door. And a website that's down, hacked or flagged as unsafe by Google means lost sales, broken trust and rankings that take months to recover.

Summer is here, with fewer people watching and slower responses: exactly when a slip-up costs the most. That makes it a good moment to review your web security before easing off. At aatsoft, a web development and maintenance company in Manresa (Barcelona), we protect sites of every kind; in this guide we explain the most common threats and how to harden yours.

Why web security is not optional for your business

A security incident is rarely «just a technical scare». Its consequences are business ones:

  • You lose sales and revenue. Every hour your site is down or hijacked is an hour with no leads and no orders.
  • You expose your customers' data. A breach that leaks personal data damages trust and can carry legal liability.
  • You sink your SEO. Google detects compromised sites, flags them as dangerous in the results and may drop them temporarily. Recovering lost rankings takes time.
  • You damage your reputation. A «not secure» warning in the browser tells every visitor the exact opposite of what you want to project.

5 common threats to your company website

Knowing your enemy is the first step to defending yourself. These are the attack routes we see most often.

The 5 most common threats to a company website: malware and injection, brute force, phishing, outdated software and DDoS attacks
The five most common threats against a company website.

1. Malware and code injection

Attackers try to slip malicious code into your site, often exploiting poorly protected forms (SQL injection) or CMS vulnerabilities. Once inside, they can steal data, redirect your visitors to fraudulent pages or use your site to attack others.

2. Brute-force attacks

Automated programs try thousands of username and password combinations against your admin panel until they hit one. If you use weak or reused passwords, it's only a matter of time before they get in.

3. Phishing and impersonation

Through emails or pages that imitate your brand, they trick your customers or your team into handing over credentials or payment details. It hurts your reputation even when the flaw isn't on your server.

4. Outdated software

This is by far the most common point of entry. Every plugin, theme or CMS version left un-updated is a known, published vulnerability anyone can exploit. Keeping everything current is not optional.

5. Denial-of-service (DDoS) attacks

They flood your site with fake traffic until it collapses, leaving it unreachable for your real customers. Good hosting and a protection layer help absorb these spikes.

Security checklist: how to protect your website

The good news is that most attacks are stopped by basic measures applied well. This is the baseline every company website should meet:

Web security checklist: SSL certificate, up-to-date software, strong passwords and 2FA, backups, web application firewall and monitoring
Six basic measures that stop most attacks.
  • SSL certificate (HTTPS). Encrypts the connection between your site and your visitors; it's essential today and Google takes it for granted.
  • Software and plugins up to date. Apply security updates in a controlled way, testing them first in a safe environment.
  • Strong passwords and two-factor authentication (2FA). Stops brute-force attacks dead.
  • Automatic backups. If something goes wrong, restoring in minutes is the difference between a scare and a crisis.
  • Web application firewall (WAF). Filters malicious traffic before it reaches your site.
  • Monitoring and alerts. Catching a problem the moment it happens, not when a customer tells you, changes everything.

Summer special: review your site before the holidays

The quietest weeks are the riskiest: if no one is watching, an attack can go undetected for days. Before you head off, make sure your backups work and are recent, your software is up to date, your monitoring with alerts is active and there's an emergency contact who can react if something fails. Ten minutes of review now save you a very unpleasant August.

How we help at aatsoft

At aatsoft we treat security as part of maintenance, not as a last-minute emergency. We apply controlled updates, set up backups and a firewall, monitor your site and react fast if a problem arises, so you can focus on your business with peace of mind —in August too—.

Request a security review of your website and we'll tell you, with no strings attached, what risks you have and how to close them. Discover our web development and maintenance services too.

Àlex
Àlex
CEO & Full Stack Developer

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