Malvertising, a type of malware spread through ads, is becoming increasingly common. You might encounter these malicious ads on social media, various websites, and even in Google search results.

Two factors are making malvertising more threatening: the use of AI by hackers to create very convincing ads and a significant rise in occurrences. Reports from Malwarebytes show a 42% increase in malvertising incidents from month to month in the fall of 2023.

Educating yourself about malvertising is crucial. Knowing more about this threat empowers you to protect yourself from cybercriminals. We’ll explain what malvertising is and provide guidance on how to recognize and avoid it.

Understanding Malvertising

Malvertising involves using online advertisements to carry out malicious activities. A notable instance occurred during the release of the PlayStation 5, a time when the console was scarce and in high demand. Hackers took advantage of the situation by creating malicious ads that appeared in Google searches. These ads mimicked official sites, but instead led to fake websites designed to steal user credentials and credit card information.

While Google actively monitors and removes such ads, hackers can sometimes keep their malvertising running for hours or even days before detection. These deceptive ads blend in with other sponsored ads on Google.

However, Google isn’t the only platform vulnerable to malvertising. This type of threat can also be found on well-known websites that have been compromised and on social media feeds.

How to Protect Yourself from Malicious Online Ads

So how can you avoid these threats if they’re becoming more common? We’ve got seven tips for you to help spot bad ads and manage the risks they present.

Check URLs Closely

Be vigilant about slight misspellings or oddities in URLs found in online ads. Malvertising, like phishing, often uses fake websites that mimic legitimate ones. Always inspect the links carefully for any discrepancies.

Access Websites Directly

The safest strategy is to avoid clicking on ads altogether. Instead, type the website address into your browser to visit the official site directly. This way, if there is a legitimate sale or offer, you will see it on the brand’s actual website. This approach is a strong defense against various types of phishing attacks—simply avoid clicking on links and visit the source directly.

Implement a DNS Filter

A DNS filter acts as a safety net against accidental clicks on harmful links. It redirects your browser to a safe page if it detects a risky website. DNS filters actively block access to known malicious sites, providing an extra layer of protection.

Avoid Logging in Through Ads

Malvertising often leads to fake sites designed to mimic legitimate ones. These sites aim to steal login details. Even if the site appears authentic, avoid entering your login information if you’ve arrived there via an ad. Instead, open a new tab and visit the official site directly to ensure you’re in a secure environment.

Ignore Phone Numbers in Ads

Phishing scams can extend beyond the internet. Some malicious ads might prompt you to call a phone number. These numbers often connect to scammers pretending to be customer service. Avoid calling any numbers from online ads.

If you do end up on a call, never share personal information. Hang up immediately! Scammers use tactics like creating urgency or invoking fear to manipulate and deceive.

Avoid Downloading from Ads

Be skeptical of ads offering free software like “Get a free copy of MS Word” or “Download a Free PC Cleaner.” These ads often lead to downloads that can install malware on your device, giving hackers access to harm your system. Always avoid downloading files directly from advertisements, as they’re typically scams.

Inform Others About Malvertising

When you encounter a suspicious ad, share your findings to protect your friends, family, and colleagues. If you’re uncertain about an ad’s legitimacy, a quick online search can often confirm whether it’s a known scam. By spreading awareness and encouraging vigilance, you contribute to a cyber-aware community that’s better equipped to recognize and respond to new threats.

Boost Your Online Security Now

Is your device fully updated with the latest security patches? Do you use effective anti-malware software? Is your DNS filtering active to keep you off of risky websites?

If you’re unsure about any of these, get in touch with us. Our cybersecurity team is ready to assist you in finding cost-effective ways to protect your online activities.

Contact us today to discuss how we can enhance your online security.

Book My 17-Minute Call