Residential IP detection is the real-time proxy detection of identifying suspicious activity originating from residential internet connections. By leveraging residential IP addresses, cybercriminals and scalpers can obfuscate their activity, evade detection, and circumvent geo-blocking restrictions. Detecting and mitigating such activity is critical to protecting businesses from fraud and safeguarding their operations.

The popularity of residential proxies has increased in recent years, driven by the growth of the scalping market. Scalpers purchase limited-stock products in bulk and then resell them at inflated prices. To carry out their activities, scalpers rely on residential proxy networks that bypass anti-scalper checks on popular websites.

Blocking Residential Proxy Traffic: Best Practices for Stronger Security

To avoid detection, residential proxies are designed to look more legitimate than data center proxies. To do so, the proxies rotate IP addresses and mimic the behavior of genuine users to create a “user fingerprint.” To avoid detection, the proxies must be able to match the device time zone, browser settings, operating system, and other characteristics associated with a real user. To ensure a good user experience, modern security systems monitor these parameters to detect anomalies and flag a proxy connection.

However, advanced bots have evolved to elude detection by switching to different IP addresses and using sophisticated request patterns. To combat this, security engineers must integrate residential IP intelligence with other layers of multifaceted fraud prevention, such as behavioral analytics, device fingerprinting, and trusted proxies. By incorporating these features into their security stack, companies can protect themselves against residential proxy abuse and prevent cybercriminal activity such as click fraud and account takeovers.