What are malicious websites and how to spot them?

What is a malicious website?

A malicious website is a webpage designed to harm visitors or steal information. Often designed to feel trustworthy and legitimate, they can be used to trick users into making fraudulent payments, revealing sensitive information, or installing spyware or other types of malware. They can be difficult to spot without careful inspection or security tools that can detect threats automatically.

In some cases, cybercriminals compromise legitimate sites and use them to distribute malware, steal information, or launch scams. That means even familiar, trusted websites can sometimes become part of an attack.

The recent GrayCharlie campaign, in which attackers hijacked vulnerable WordPress sites to inject hidden code that attempted to install Remote Access Trojans (RAT), underscores the fact that no website is inherently safe.

The rise of AI-powered tools has made it easier than ever for bad actors to create convincing fake websites at scale, making malicious sites increasingly difficult to identify. In fact, when TIME analyzed reports from the AI Incident Database — a crowdsourced repository of AI-related failures and misuse — it found that reported AI-related incidents increased by 50% year over year between 2022 and 2024.

Types of malicious websites

Malicious websites come in many forms, each designed to exploit trust, curiosity, or a moment of inattention. Here are some of the most common types to watch out for:

• Phishing sites: These websites imitate trusted services, such as banks, online stores, or login pages, to trick you into revealing sensitive information. Phishing attacks often arrive through emails, text messages, or social media posts containing convincing-looking links.
• VibeScam websites: VibeScams are malicious sites made using AI-powered website builders. They can be built in a matter of minutes, and they often look and feel highly convincing.
• Drive-by downloads: Some sites attempt to install malware on your device as soon as you visit them, often by exploiting browser or software vulnerabilities. Because such drive-by downloads require little or no interaction from the user, they can be especially dangerous.
• Scareware sites: So-called scareware sites use alarming messages, fake security alerts, or pop-ups claiming your device is infected. The goal is to pressure you into downloading a supposed fix or security tool that’s actually malware.
• Malvertising: Attackers can embed malicious code hidden within online advertisements. As a result, even legitimate and reputable websites can unintentionally expose visitors to security threats through compromised ads.
• QR code phishing: This attack method uses malicious QR codes to direct users to fraudulent websites. Because people often trust QR codes in physical locations, attackers can exploit them to steal personal information or distribute malware.
• Typosquatting sites: Attackers register domain names that closely resemble legitimate websites, such as “arnazon.com” instead of “amazon.com.” They rely on typing mistakes to lure users to fraudulent or malicious pages.

Where might you encounter a malicious website?

Malicious websites can appear almost anywhere online. Attackers often use trusted platforms and everyday browsing habits to lure people into visiting dangerous pages. Common sources include:

• Phishing emails: Fraudulent emails – sometimes conflated with spam – can contain links to fake login pages, scam websites, or malware-hosting sites.
• Text messages and messaging apps: Smishing attacks use scammy text messages to direct users to malicious websites. Messaging apps like WhatsApp and Telegram are another vector.
• Social media posts and ads: Attackers may share malicious links through fake accounts, sponsored posts, or compromised profiles.
• Search engine results: Some malicious websites abuse search engineering optimization tactics (SEO poisoning) or paid ads to appear in search results for popular topics or brands.
• Online advertisements: Malvertising campaigns can redirect users to dangerous websites after clicking a compromised ad. Threat researchers at Gen, the company behind Norton, have found evidence that malvertising is a significant problem on Meta platforms, for example, with nearly one in three Meta ads in Europe apparently pointing to a scam, phishing, or malware-laden website.
• QR codes: Malicious QR codes on posters, restaurant menus, or bus stations can send users to fraudulent or malware-infected pages.
• Compromised legitimate websites: Even trusted websites can sometimes be hacked and used to distribute malware or redirect visitors to malicious destinations.

What happens if you visit a malicious website?

Visiting a malicious website can have serious consequences. Depending on the type of attack, malware may be installed on your device, sensitive information could be stolen, or attackers may gain unauthorized access to your accounts or systems.

Some attacks happen almost instantly, while others unfold over days or even weeks. In many cases, victims don’t realize anything is wrong until they notice unusual activity, missing data, or security alerts.

A high-profile example of a major malicious website-enabled attack occurred in late 2025, when an employee at a global infrastructure company visited a compromised car dealership website. A fake CAPTCHA prompt tricked the employee into downloading a Remote Access Trojan (RAT), giving attackers a foothold inside the organization’s network.

Over the following 42 days, the attackers moved through the company’s systems, stole credentials, exfiltrated nearly 1 TB of data, and ultimately deployed ransomware that disrupted operations across the business.

While incidents of this scale are uncommon for individual users, they demonstrate how a single visit to a malicious website can lead to significant security breaches when attackers successfully gain access to a device or network.

How to spot a malicious website

Malicious and counterfeit websites often leave clues — you just need to know where to look. Warning signs can range from suspicious URLs and missing security certificates to poor design and aggressive pop-ups.

Here are the red flags worth watching for:

• Suspicious URLs: Before clicking a link or entering any information, examine the domain carefully. Typosquatted websites, unusual domain extensions, and URLs with extra characters or hyphens are common indicators that something may be wrong.
• Missing HTTPS: A padlock icon in your browser’s address bar indicates that your connection to the site is encrypted. If a website uses HTTP instead of HTTPS, proceed with extreme caution. Just remember that the padlock icon may still appear for malicious websites.
• High-pressure tactics: Malicious websites often rely on urgency to manipulate visitors. Countdown timers, “act now” warnings, and pop-ups claiming your device is infected are designed to trigger panic and encourage hasty decisions
• Poor grammar and design: Spelling errors, inconsistent fonts, blurry logos, and unprofessional layouts can signal that a site was created quickly — often as part of a phishing campaign designed to imitate a legitimate brand. Unfortunately, AI is making it easier for scammers to create websites that look and sound more professional.
• Browser or antivirus warnings: If your browser displays a security warning or your antivirus software flags a website, take it seriously. These alerts are designed to protect you from known threats and should never be ignored.

How do I protect myself against malicious websites

While no defense is foolproof, the right combination of habits and security tools can make you a much harder target. Here are some practical ways to reduce your risk:

• Use software that detects scam websites: Cyber Safety software can help block malicious websites, prevent drive-by downloads, and warn you about threats that your browser may not catch on its own.
• Keep your software updated: Cybercriminals often exploit known vulnerabilities in operating systems, browsers, and apps. Installing updates promptly helps close those security gaps.
• Be cautious with email links: Instead of clicking links in unsolicited emails, type the website address directly into your browser or navigate to the site through a trusted source.
• Avoid unexpected downloads: Legitimate websites rarely require additional software or codecs just to view content. If a site unexpectedly prompts you to install something, leave the page and look for an alternative source.
• Check suspicious URLs before visiting: Free online tools such as Norton Safe Web can scan unfamiliar links and identify potential threats before you click.
• Trust your instincts: If a website looks suspicious, feels rushed, or behaves unexpectedly, close the page immediately.

Protect yourself from dangerous websites

Fake and malicious websites are becoming more convincing every day, making it easier than ever to click the wrong link. Staying safe starts with smart habits, like keeping your software updated and verifying websites before entering sensitive information.

For added protection, let Norton 360 Deluxe help do the heavy lifting. With real-time threat detection, malicious site blocking, and alerts for suspicious downloads, it can help stop online threats before they have a chance to compromise your device or personal data.

FAQs

How can I report malicious websites?

You can report malicious websites to services such as Google Safe Browsing, Microsoft Defender SmartScreen, or your country’s cybercrime authority. In the U.S., for example, suspicious websites can be reported to the FBI’s Internet Crime Complaint Center (IC3).

Most major browsers also include a built-in option for reporting unsafe websites. Reporting malicious sites helps security providers identify threats faster, warn other users, and, in some cases, facilitate takedown efforts.

What are the best tools to scan websites for malware?

Website scanning tools generally fall into two categories. The first includes URL scanners, such as Sucuri SiteCheck or VirusTotal, which compare links against threat intelligence databases and flag known malicious websites before you visit them.

The second category includes internet security software, such as Norton 360, which can help block access to malicious websites based on a wide range of trust signals, helping catch newly built malicious websites that haven’t yet been flagged as dangerous.

What’s the difference between a phishing site and a malware site?

Phishing sites impersonate legitimate brands to steal passwords, payment details, and other sensitive information. Malware sites aim to infect visitors with harmful software, such as spyware, ransomware, or keyloggers. Some malicious websites combine both tactics, stealing data while also attempting to compromise your device.

Can visiting a website infect you without clicking anything?

Yes. In some cases, simply visiting a malicious website can result in an infection through what’s known as a drive-by download. These attacks exploit vulnerabilities in browsers, plugins, or operating systems, allowing malware to install automatically when a page loads. While modern browsers have made drive-by attacks less common, keeping your software updated remains an important defense.

How do I check if a URL is safe before clicking?

Start by examining the URL carefully. Check that the domain name is legitimate and that the website uses HTTPS. If anything looks unusual, avoid clicking. For an additional layer of protection, paste the URL into a free service such as Norton Safe Web, which compares links against extensive threat databases and can help identify known malicious websites before you visit them.

Are HTTPS sites always safe?

No. HTTPS only means that the connection between your browser and the website is encrypted. It does not guarantee that the website itself is trustworthy. Many legitimate websites use HTTPS, but so do many malicious ones. While HTTPS is an important security feature, it should be considered one trust signal among many — not proof that a website is safe.

What should I do if I entered my information on a fake site?

If you believe you’ve entered information on a fake website, act quickly. Change any affected passwords immediately, especially if you reuse them across multiple accounts. Enable multi-factor authentication wherever possible.

If you entered payment card information or banking details, contact your financial institution right away to report the incident and discuss protective measures. It’s also a good idea to run a malware scan on your device to check for any threats that may have been installed.