What Is a User-Agent?
A User-Agent is a string sent by your browser or application when making requests to websites, indicating your device type, operating system, and browser version.
Websites use User-Agent information to optimize page display, ensure compatibility, and enhance security.
Uses of User-Agent
- Device identification – Helps websites distinguish between operating systems, browsers, and device types.
- Content optimization – Adjusts layout or features based on device capabilities.
- Security checks – Detects automated scripts or suspicious activity.
Risks in Multi-Account Operations
- Using identical or default User-Agent for multiple accounts can be detected as automation or the same user, increasing the risk of bans.
- Accounts without customized or randomized User-Agent are easier to be linked.
Example:
A social media manager handling 10 Facebook accounts using the same default browser User-Agent may trigger Facebook’s anti-fraud system.
With MasLogin Antidetect Browser, each account can have a unique User-Agent, ensuring environment isolation and anti-detection, reducing the risk of bans.
Who Should Care About User-Agent?
- Social media managers – Managing multiple accounts on Facebook, Instagram, TikTok
- Cross-border e-commerce sellers – Operating multiple Amazon, Shopee, eBay stores
- Affiliate marketers – Running multiple promotional accounts
- Privacy-conscious users – Wanting to stay anonymous online
Key Takeaway
User-Agent is a critical identifier used by websites to recognize users.
With MasLogin Antidetect Browser, users can customize or isolate User-Agent for each account, prevent account linking, and safely manage multiple accounts while protecting privacy.
