Maintaining a clean and compliant ad supply chain is a constant battle. In this edition, we explore the significant surges in malvertising violations that appeared in Q2 2026. These increases are a critical warning for website performance and user safety, proving that cybercriminals are constantly refining their tactics to bypass basic filters.

In this report, we break down the most alarming increases in ad violations. Understanding these threats is the first step toward building a clean and compliant ad supply chain and ensuring a high Google ranking through superior web content performance.

Here are some of the Malvertising trends that saw the largest surges in Q2 2026.

  • Auto-Redirect (+118.13%): Forced auto-redirects more than doubled this quarter. This high-severity violation forcibly hijacks a user’s session, driving them away from your site to malicious or low-reputation third-party landing pages. It remains one of the most destructive threats to user retention and brand reputation.

  • Cryptocurrency Miner (+55.56%): Cryptojacking attempts are climbing back up. These unauthorized scripts hijack your users’ CPU power to mine cryptocurrency in the background, causing device overheating, sluggish browser performance, and massive resource drain.

  • Auto-Vibrate (+26.32%): Commonly used in mobile malvertising, this violation triggers the device’s physical vibration function without consent. It is typically paired with mobile-specific scareware to trick users into believing their phone has a critical virus.

IAB Standards & Technical Compliance

Maintaining IAB compliance is essential for ensuring your ads load quickly and perform effectively across all devices. Here are all the IAB-related violations that increased in Q2 2026.

  • IAB Ad Request Count (+77.17%): Excessive HTTP requests rose sharply. This technical violation drags down overall site speed, bloats network activity, and frequently leads to search engine ranking penalties.

  • IAB Ad Compression (+50.65%): Uncompressed ad creative assets saw a major jump. These bulky, unoptimized files delay rendering, eat up mobile bandwidth, and drive up bounce rates.

  • IAB Ad Dimensions (+33.70%): Non-standard ad sizes grew this quarter. These poorly formatted creatives disrupt native page layouts, overlay critical content, and hurt overall publisher conversions.

User Experience & Advisory Alerts

Deteriorating user experience is the fastest way to lose audience loyalty. AdSecure has detected a rise in intrusive behaviors that frustrate visitors.

  • Heavy Ads (+134.46%): Consuming excessive CPU, memory, and bandwidth, heavy ads skyrocketed this quarter. This directly triggers automated browser interventions (like Google’s Heavy Ad Intervention), where the ad slot is stripped entirely and replaced with an error.

  • Landing Page Errors (+23.39%): Broken outbound links, bad gateway errors, and 404s in ad campaigns increased. This leads to wasted ad spend, disrupted user flows, and poor overall campaign performance.

  • Threat Intelligence (+11.38%): A rise in creatives linked to known bad actors, suspicious networks, or blacklisted digital signatures flagged by global threat feeds.

  • Malicious URL (Sucuri) (+3.85%): A minor tick up in ad campaign URLs pointing directly to compromised websites flagged by website security providers.

  • Malicious URL (VirusTotal) (+2.37%): Steady, persistent attempts to sneak malicious landing pages past standard security filters.

Privacy & Content Risks

  • Unsafe Content(+28.74%): We observed a significant spike in ads containing inappropriate content. This poses an immediate brand safety crisis for publishers and violates mainstream ad network policies.

  • SSL Non-Compliant (+26.60%): A major jump in non-secure ad resources (HTTP mixed within HTTPS pages). This triggers intimidating “Not Secure” browser warning barriers, shaking user confidence and compromising overall data integrity.

Conclusion: Stay Vigilant to Protect your Reputation

Online advertising violations are not going away and continue to become more common and easier to create with AI integration. The surge in these violations highlights the need for a 360-degree ad security system. To protect your ad supply chain from bad actors, it is crucial to automate your verification process.

AdSecure’s industry-leading monitoring tools can help you identify these threats in real-time, allowing you to reject non-compliant creatives before they reach your audience. Don’t let malvertising affect your Google ranking or your bottom line. Ready to safeguard your platform? Sign up today and safeguard your brand in 2026.