Discover the most common website security mistakes and learn simple fixes to protect your site, data, and customers from online threats.
Introduction: Why Website Security Is Not Optional
If you’ve built a website, whether for your small business, personal blog, or online store, you’ve probably spent time perfecting the design, adding great content, and making sure it looks good on mobile. But here’s the question most people forget to ask: Is it secure?
A website is more than just a digital brochure. It’s your online shopfront, your brand’s reputation, and sometimes your customers’ personal information all in one place. If it gets hacked, you could lose not only your data but also your visitors’ trust. And once trust is gone, it’s hard to get back.
Here’s a scary fact: 43% of cyberattacks target small businesses (Verizon Data Breach Investigations Report). Hackers know smaller sites often skip security measures, making them easy targets. And the damage? The average cost of a cyberattack for small businesses is $108,000 (Kaspersky). For many, that’s enough to shut the business down.
The worst part? Most breaches happen because of common website security mistakes that are avoidable. Let’s walk through them, so you can protect your site before it’s too late.
Common Website Security Mistakes that are Avoidable
Mistake 1: Using “admin” as Your Username
When setting up a site, especially on platforms like WordPress, the default username is often “admin.” Many people keep it because it’s quick and easy.
Why it’s risky:
Hackers already know your username. They have to guess the password. It’s like leaving your shop door unlocked and putting up a sign that says, “The key’s under the mat.”
Security researchers have found that “admin” is still one of the most common usernames across hacked WordPress sites. Automated bots try “admin” plus common passwords thousands of times a day.
How to fix it:
- Create a new admin account with a unique username (e.g., “Jess_Marketing01”).
- Log in with the new account.
- Delete the old “admin” account.
Mistake 2: Weak Passwords
Using simple or predictable passwords, such as “password123,” your birthday, or your pet’s name, is not safe at all.
Why it’s risky:
Hackers use “brute force attacks” that try millions of password combinations. Weak passwords are cracked in seconds.
In 2024, “123456” was still the most common password globally. It takes less than one second to crack.
How to fix it:
- Use at least 12 characters with upper/lowercase letters, numbers, and symbols.
- Avoid anything personally connected to you.
- Use a password manager (LastPass, Bitwarden, Dashlane) to store and generate passwords.
Mistake 3: Skipping Updates
Not updating your website’s CMS, plugins, or themes regularly is one of the most common website security mistakes that website owners make.
Why it’s risky:
Updates often patch security vulnerabilities. Skipping them is like ignoring a recall on your car’s faulty brakes.
Example:
The 2017 Equifax breach, affecting 147 million people, happened because they failed to update a known security flaw.
How to fix it:
- Turn on automatic updates where possible.
- Check for updates weekly.
- Remove unused plugins/themes to reduce update workload.
Mistake 4: No SSL Certificate
An SSL certificate encrypts the connection between your website and visitors. Without it, browsers show “Not Secure.”
Why it’s risky:
Hackers can intercept sensitive information like passwords and payment details. Also, Google ranks HTTPS sites higher.
A customer lands on your online store and sees “Not Secure” in red. Chances are, they’ll leave immediately.
How to fix it:
- Many hosts provide free SSL via Let’s Encrypt.
- Install it and force HTTPS on all pages.
Mistake 5: Ignoring Website Backups
Not keeping regular backups of your site is dangerous!
Why it’s risky:
If your site crashes or gets hacked, you could lose years of work and customer data.
How to fix it:
- Use plugins like UpdraftPlus or BackupBuddy.
- Keep multiple backup copies (cloud + local storage).
- Schedule automatic backups daily or weekly.
Mistake 6: Poor Hosting Security
Choosing the cheapest hosting provider without checking their security policies is not a wise action.
Why it’s risky:
Cheap hosting often means outdated software, weak firewalls, and shared servers, meaning you can be hacked if another site on the server is compromised.
How to fix it:
- Choose a reputable host with 24/7 monitoring, backups, and malware scanning.
- Consider managed hosting for extra security.
- See DigiFix’s secure website development options.
Mistake 7: Using Outdated Plugins/Themes
Leaving old or unused plugins/themes on your site is one of the most common website security mistakes.
Why it’s risky:
Hackers often target outdated code with known flaws. Even inactive plugins can be exploited.
How to fix it:
- Delete unused plugins/themes.
- Keep everything updated.
Mistake 8: Not Setting Proper User Permissions
What it is:
Giving all users full admin rights.
Why it’s risky:
The more admin accounts you have, the more opportunities hackers have.
How to fix it:
- Give users the least privilege needed.
- Delete accounts when they’re no longer needed.
Mistake 9: Ignoring Malware Scans
What it is:
Never scanning for malicious code.
Why it’s risky:
Malware can sit unnoticed for months, stealing data or redirecting visitors to scam sites.
How to fix it:
- Install security plugins (Wordfence, Sucuri).
- Schedule weekly scans.
Mistake 10: No Firewall Protection
What it is:
Not using a Web Application Firewall (WAF).
Why it’s risky:
A WAF blocks common attacks before they reach your site.
Example:
Think of it as a nightclub bouncer checking IDs before letting people in.
How to fix it:
- Use Cloudflare, Sucuri, or your host’s firewall services.
Mistake 11: Storing Sensitive Data Without Encryption
What it is:
Saving passwords or personal data in plain text.
Why it’s risky:
If breached, all data is exposed instantly.
How to fix it:
- Use hashing (bcrypt, Argon2) for passwords.
- Only store essential data.
Mistake 12: Lack of Two-Factor Authentication (2FA)
What it is:
Using only a password for login.
Why it’s risky:
If hackers crack your password, they’re in. 2FA adds a second verification step.
How to fix it:
- Enable 2FA on your CMS, hosting, and email accounts.
Mistake 13: Not Limiting Login Attempts
What it is:
Allowing unlimited password tries.
Why it’s risky:
Brute force bots can keep trying until they guess right.
How to fix it:
- Use plugins like Limit Login Attempts Reloaded.
Mistake 14: Default CMS Settings
What it is:
Leaving default configurations in place.
Why it’s risky:
Default settings are predictable, making attacks easier.
How to fix it:
- Change database prefixes, file permissions, and default URLs for admin pages.
Mistake 15: No Security Monitoring
What it is:
Not tracking site activity for suspicious behaviour.
Why it’s risky:
You might not notice a breach until it’s too late.
How to fix it:
- Use monitoring tools (Sucuri, Jetpack Security).
Beginner’s Website Security Checklist
Here’s a quick list to help you stay on top of security:
✅ Unique admin username
✅ Strong password (12+ characters)
✅ Regular updates
✅ SSL installed
✅ Automated backups
✅ Secure hosting
✅ Updated plugins/themes
✅ Limited user permissions
✅ Weekly malware scans
✅ Firewall active
✅ Encrypted sensitive data
✅ Two-factor authentication
✅ Login attempt limits
✅ Customised CMS settings
✅ Ongoing security monitoring
Why Website Security Matters: What the Numbers Tell Us
1. 43% of cyberattacks target small businesses
Small businesses often think, “Why would hackers bother with me? I’m too small to be a target.”
The reality? Hackers love small businesses because they know security budgets are low, defences are weaker, and owners are less likely to notice an attack right away. Your site might not hold millions of credit card numbers, but it can still be hijacked to send spam, host malware, or steal your customers’ information.
2. 60% of small businesses close within 6 months of a cyberattack
This is the most sobering statistic. Cyberattacks aren’t just an inconvenience — they can be a death sentence for a business. The financial hit comes from downtime, lost sales, cleanup costs, and potential fines. But the reputational damage can be even worse; customers are hesitant to come back if they think their data was at risk.
3. 94% of malware is delivered via email
This indicates that most cyberattacks start with something as ordinary as an email. All it takes is one employee or admin clicking a bad link, and malware can infect your website. That’s why security isn’t just about having good software — it’s about awareness and training for everyone involved in your business.
4. $108,000 — the average cost of a breach for small businesses
That’s just the average. Depending on the scale of your site, it could be much higher. This cost includes things like forensic investigations, restoring backups, security upgrades, lost business during downtime, and legal fees. And remember, this doesn’t even count the customers who never return after losing trust in your brand.
Bottom line:
Website security isn’t just about protecting code; it’s about protecting your money, your brand, and your ability to stay in business. Ignoring it is like leaving your shop unlocked overnight in a high-crime area and hoping for the best.
Conclusion: Make Website Security a Habit
The biggest common website security mistakes are not about forgetting complex tech settings — they’re about skipping the basics. The good news? Every single mistake in this list is fixable.
Think of security as a regular chore, like locking your shop at night. Do it consistently, and you’ll avoid most problems.
If you’re unsure whether your site is truly secure, getting expert help is worth it. Prevention costs far less than recovery.
Contact DigiFix today to protect your website and give your visitors the safe experience they expect.