"Malvertising" Is on the Rise - Watch Out on the Web
Online threats are becoming more sophisticated every day, and malvertising is one of the fastest-growing dangers. Short for "malicious advertising," malvertising is a type of cyberattack where hackers use online ads to trick users into visiting harmful websites or downloading malware.
In the fall of 2023, malvertising incidents increased by 42% month over month, according to Malwarebytes. Two factors are driving this rise: hackers’ use of AI to craft convincing ads and the sheer volume of ads appearing across platforms like Google and social media.
Understanding malvertising is the first step to protecting yourself. Below, we’ll explain how malvertising works and share tips to help you stay safe online.
What Is Malvertising?
Malvertising involves using fake online ads to carry out malicious activities. These ads often appear in Google search results, on hacked websites, or even in social media feeds.
For example, when the PlayStation 5 was first released, hackers capitalised on its popularity. They ran fake Google ads claiming to sell the console. These ads redirected users to fraudulent websites designed to steal credentials and credit card details.
While platforms like Google work hard to monitor and remove malicious ads, some slip through the cracks. They can remain live for hours or even days before detection.
Tips to Protect Yourself from Malvertising
Staying safe online requires vigilance. Here are some key tips to help you avoid falling victim to malvertising:
1. Review URLs Carefully
Malvertising often uses slightly misspelled or altered URLs to mimic legitimate sites. Before clicking, double-check the URL for inconsistencies.
2. Visit Websites Directly
Rather than clicking on ads, go directly to the brand’s website. If there’s truly a sale or promotion, you’ll find it there. This approach works for all types of phishing and malvertising.
3. Use a DNS Filter
DNS filters (like Cisco Umbrella) add an extra layer of protection. If you click a malicious link, the filter will redirect you to a warning page before any harm is done.
4. Don’t Log in After Clicking an Ad
Malvertising often leads to fake login pages designed to steal your credentials. If you click an ad, avoid entering login details on the resulting site—even if it looks authentic. Open a new browser tab and visit the official site instead.
5. Don’t Call Numbers from Ads
Some malicious ads include fake phone numbers, connecting you to scammers posing as customer service representatives. If you’ve called a number from an ad, hang up immediately and avoid sharing any personal information.
6. Avoid Downloading from Ads
Common malvertising scams entice users to download "free" software, such as antivirus tools or popular programs. These downloads often inject malware into your system. Never download anything directly from an ad.
7. Warn Others About Suspicious Ads
If you encounter a suspicious ad, share your findings with colleagues, friends, or family. A quick Google search can often confirm whether the ad is part of a known scam. Creating a cyber-aware community helps everyone stay safer online.
Why Malvertising Is More Dangerous Than Ever
Two trends are making malvertising increasingly threatening:
AI-Powered Ads: Hackers are using artificial intelligence to craft highly convincing ads that mimic legitimate brands.
Rapid Growth: As malvertising becomes more common, it’s harder for platforms to catch and remove every harmful ad.
These factors make it essential to stay informed and proactive about your online security.
Improve Your Online Security Today
Are your devices up to date with the latest security patches? Do you have a reliable anti-malware solution? Is DNS filtering set up to block malicious websites?
If you’re unsure, we can help. At Pulse4, our cybersecurity experts provide affordable and effective solutions to protect your online world.
Contact us today to schedule a consultation and fortify your defences against malvertising and other cyber threats. Stay safe online - don’t let hackers get the upper hand.
Licencing and Attribution: Image licensed under Adobe Stock standard licence. Created using Generative AI.
Image Source 1: https://stock.adobe.com/uk/images/glowing-antivirus-programs-battling-malicious-code-on-a-digital-battlefield-cybersecurity-concept/1076522444