When you run multiple eCommerce accounts on platforms like Amazon, eBay, or Shopify, being detected logging into several accounts from the same device can quickly trigger platform risk controls. Mild penalties might be throttled traffic; severe penalties can include account suspension. That’s why using an anti-detect browser is essential for sellers.

A proper anti-detect browser helps sellers safely manage multiple shops, minimizes penalties from account linkage, and improves the efficiency of multi-account operations. This article summarizes the best free anti-detect browsers and practical tips for 2025 aimed at cross-border (international) eCommerce sellers.

Why an anti-detect browser matters for international eCommerce sellers

International sellers often run multiple storefronts and accounts across different platforms, while also managing ad campaigns and analytics. Major eCommerce platforms (Amazon, eBay, Shopify, etc.) maintain strict security and anti-fraud systems that use browser fingerprinting, IPs, cookies, and other signals to detect whether multiple accounts are operated by the same person.

Using a regular browser can lead to problems such as:

Account linkage risk: If a platform finds multiple accounts originating from the same IP, device, or browser fingerprint, it may flag those accounts as linked and restrict or ban them. For cross-border sellers, that can mean shops shut down or ad accounts disabled—direct hits to the business.

Ad account restrictions: When multiple accounts run ads and the platform detects the same source, it can trigger reviews or suspend ad accounts. That breaks data collection and optimization, reducing ad effectiveness.

Blocked market testing: Sellers need to test pricing, ad creatives, and product strategies in different regions. If you can’t simulate different environments or devices, platforms may treat your tests as suspicious behavior.

Team collaboration headaches: Small teams or agencies working from the same machine are quickly identified by platforms, lowering operational efficiency and raising security risks.

Core roles of an anti-detect browser

Secure multi-account management: Each account runs in its own isolated browser environment so the platform can’t link them.

Fingerprint spoofing: Customize Canvas, WebGL, timezone, system info, and more to emulate different devices.

Proxy support: Bind different IP addresses to browser profiles to further reduce suspension risk.

Automation compatibility: Some anti-detect browsers support Selenium, Puppeteer, RPA, etc., for scalable operations.

Best free anti-detect browser pick: MostLogin

MostLogin is a browser tool built for privacy protection and multi-account isolation. It integrates anti-fingerprinting measures, identity isolation, and virtual environment configuration. These features reduce cross-site tracking and browser fingerprint recognition, helping users fully isolate accounts across platforms. MostLogin is widely used in cross-border eCommerce, social media management, ad operations, and cryptocurrency scenarios—anywhere privacy and multiple identities matter.

Best suited for: 

international/cross-border eCommerce, social media managers, advertisers, crypto operators, and teams trying to avoid platform risk.

Key features：

Anti-fingerprinting: Hides real device information to lower detection risk.

Isolated multi-account environments: Each profile runs independently with no cross-contamination.

Cloud configuration sync: Team support and consistent environments across devices.

Simulated realistic behavior: Helps avoid triggering platform anti-fraud systems.

Smart proxy integration: Easy switching across global IP nodes.

Free and usable: Apart from cloud-phone/mobile virtualization services, the anti-detect browser features are free to use.

Whether you’re a corporate team or an individual seller, MostLogin can build a secure, stable, and efficient multi-identity workspace to improve account safety and operational efficiency.

FAQ

Q1: Can I achieve anti-detection with a normal browser—e.g., incognito/private mode?

No. Regular browsers (including private/incognito modes) still expose many device signals and can leak information that leads to account linkage. Professional anti-detect browsers like MostLogin provide advanced anonymity and anti-detection features that normal browsers do not.

Q2: Will an anti-detect browser still leak my information?

High-quality anti-detect browsers significantly reduce information leakage. They typically block ad trackers, third-party cookies, and fingerprinting scripts, and offer true privacy/stealth browsing features—greatly lowering the chance of data being exposed.

Q3: Can MostLogin log into multiple accounts at the same time? Will the accounts interfere with each other?

On a standard browser, multiple tabs or windows share cookies and caches—accounts can bleed into one another. Anti-detect browsers like MostLogin let you create multiple independent profiles; each profile behaves like a separate machine, enabling true multi-account protection without cross-account interference.