2020-12-31 · 3 min read · Baidu PPC Pro Team

Baidu Click Fraud Protection Adds IPv4 Blocking: How to Stop Malicious Clicks

📊 The Click Fraud Problem on Baidu

Click fraud is a real and persistent issue on Chinese search platforms. Competitors click your ads to drain your budget. Automated bots crawl your landing pages through paid links. Every fraudulent click wastes money and distorts your campaign data — causing your oCPC algorithm to optimize toward phantom users.

Baidu's built-in click fraud protection tool, 商盾 (Shangdun), has long offered IP-based blocking. But until now, it only supported IPv6 addresses — while most websites (and most malicious traffic in China) still run on IPv4.

That meant a gap in protection. A significant one.

📊 What Changed (December 2020)

Baidu added IPv4 blocking to 商盾's manual impression blocking. You can now block:

🛡️
1,000 IPs
Combined blocking limit (IP + ID + real-time)
🌐
IPv4 + IPv6
Dual protocol coverage
⚡
Near Real-Time
Blocks take effect within minutes
How it works:

1. Identify suspicious IPs from your click data (repeated clicks, zero conversions, abnormal patterns) 2. Add them to 商盾's manual block list 3. Those IPs stop seeing your search ads — across both PC and mobile

Important limitation: 商盾 blocks based on the IP the user connects to Baidu with. Due to Baidu's IPv6 rollout (mandated by China's Ministry of Industry), there are edge cases where a user may access Baidu via IPv6 but your landing page via IPv4. In those cases, the block may not apply — use real-time IP click blocking as a supplementary measure for those gaps.
💡 Pro Tip: Don't wait for obvious fraud patterns. Set up a weekly audit of your IP click logs. Look for single IPs showing >5 clicks with zero conversions, or IPs from regions outside your targeting. Block early and proactively.

📊 The Barrier for International Brands

lives inside Baidu's advertising backend. Using it requires:

1. A Baidu advertising account 2. Access to the 商盾 tool (Chinese interface) 3. Regular monitoring of IP logs and knowledge of what patterns indicate fraud vs. genuine interest

For overseas teams running Baidu campaigns remotely, IP log analysis is rarely a priority — until the budget starts vanishing.

🔧 How BPP Protects Your Baidu Budget

🎯 How BPP Handles Click Fraud

    • ✅ We monitor your Baidu IP click logs weekly — identifying suspicious patterns before they drain your budget
    • ✅ We maintain and update your 商盾 block list proactively — adding IPv4 and IPv6 blocks as threats emerge
    • ✅ We combine manual IP blocking with real-time click protection for layered defense
    • ✅ You get a monthly click fraud report in English — with blocked IPs, saved budget estimates, and ongoing threats
Worried about competitors clicking your Baidu ads?

→ Contact BPP

📝 Key Takeaways

  • Baidu continues to evolve its advertising platform with user-friendly upgrades
  • Overseas advertisers benefit from simplified workflows and AI-powered tools
  • Working with an experienced partner ensures smooth campaign setup and optimization