How do you know if you’ve been hacked?
Cyberattacks don’t always come with a warning message. Often, the signs are subtle — until it’s too late. Whether it’s your personal account, business website, or server, early detection is critical.
In this post, we’ll cover the 10 most common warning signs of a cyberattack and explain how you can respond fast and stay protected.
If your accounts are accessed from locations you’ve never been to or at odd hours, someone may have your credentials.
Login attempts from foreign IP addresses
Unexpected password reset emails
Locked accounts or access denied messages
🔗 Check if your email or password has been leaked
What to do:
Change your password immediately and enable multi-factor authentication (MFA).
On platforms like WordPress, hackers often create new admin users to maintain control over your site without your knowledge.
Admin dashboard shows unfamiliar users
New users with suspicious email addresses
Changed user permissions or roles
What to do:
Delete the unknown users, scan your site for backdoors, and update your CMS and plugins.
If your site redirects to random ads, adult content, or foreign e-commerce sites, it may be infected with malicious code or a redirect script.
Google Chrome shows “This site may be hacked” warning
Users report unexpected redirects
Sudden traffic spikes from shady referrers
🔗 Use Google Search Console to check security issues
What to do:
Use a malware scanner like Sucuri or Wordfence to identify and remove the redirect.
Have you noticed changes in your home page, missing files, or unknown scripts in your website directory? Hackers may have gained backdoor access.
Modified .htaccess or index.php files
Strange plugins or extensions installed
New files you didn’t upload
What to do:
Compare your files with a clean backup and remove any unauthorized changes. Use file integrity monitoring tools.
Compromised email accounts are often used to send spam or phishing emails, leading to your domain being blacklisted.
Friends or clients report strange emails from your address
Your emails bounce or go to spam
Increased email server load
🔗 Check your domain’s spam reputation
What to do:
Change your email password, check your SMTP settings, and run a malware scan on your device.
If your antivirus, firewall, or endpoint protection tools have been disabled without your knowledge, it’s likely that malware is trying to avoid detection.
Antivirus is turned off and won’t restart
Unable to access your firewall or security dashboard
Alerts and logs are missing or wiped
What to do:
Boot into safe mode and run a full malware scan using trusted tools like Malwarebytes or Microsoft Defender.
If your server or site suddenly uses more resources than usual, hackers could be using it to host spam files or run bots.
Unusual CPU or RAM spikes
High bandwidth use with no increase in traffic
Your hosting provider flags your site
What to do:
Check your server logs for unknown scripts or traffic sources. Use tools like Netdata or your hosting dashboard to investigate.
SEO spam hacks often inject hidden links into your website to promote shady sites (pharma, gambling, adult content).
Hidden links in your site footer or posts
New pages indexed by Google that you didn’t create
Unexplained changes in search rankings
🔗 Learn about SEO spam on Sucuri
What to do:
Scan your site for malware, check your sitemap and robots.txt, and clean the code manually or restore a clean backup.
If you see unauthorized popups or ads on your website, it’s a sign of injected JavaScript or adware.
Your site loads extra pop-ups
Ads appear in areas you didn’t configure
Visitors report sketchy behavior
What to do:
Use the browser Developer Tools to inspect injected code. Replace infected templates and clean your themes.
If you can no longer access your dashboard or system even after a password reset, hackers may have completely taken over.
Your credentials stop working
Recovery emails go to an unknown address
The site shows a ransom message or is offline
What to do:
Contact your hosting provider immediately. If available, restore from a clean backup and reset all admin access.
If you notice any of the signs above, take these steps immediately:
Disconnect from the internet to stop data leaks
Change all passwords (email, CMS, FTP, databases)
Scan your system and site with trusted security tools
Restore from backup if available
Hire an expert if you’re unsure how to clean the hack
At Slickhacker, we help website owners and businesses:
Detect and remove hidden malware
Perform full security audits
Secure and harden WordPress, Joomla, and custom sites
Prevent future attacks with 24/7 monitoring
👉 Contact us today for a free website health check before the damage spreads.
