July 3, 2026
WhatsApp's introduction of usernames is one of the biggest identity changes on the platform since its launch. Instead of sharing your phone number, you'll be able to connect using a username.
From a security perspective, this is both exciting and challenging.
3 Security Advantages
- Better Protection of Personal Data Your phone number is personally identifiable information (PII). Keeping it private reduces unnecessary exposure and strengthens your privacy.
- Less Spam and Social Engineering Businesses, strangers, and scammers won't automatically gain access to your phone number simply because they contact you on WhatsApp.
- Improved Separation of Identity Professionals, businesses, and content creators can communicate publicly without exposing the same phone number used for banking, MFA, or personal communications.
3 Security Concerns
- Username Impersonation Attackers will likely register usernames that resemble trusted individuals or organizations (for example, replacing an "l" with an "I"), increasing impersonation risks.
- Increased Brand Squatting Organizations that delay claiming their usernames could find them registered by impersonators, creating opportunities for scams and phishing.
- More Difficult Incident Attribution Phone numbers provide a stronger real-world identifier. Usernames are easier to create and change, making investigations and abuse tracking more complex.
Recommendations
For individuals:
❗️Reserve your username as soon as it becomes available.
❗️ Enable two-step verification.
❗️Never rely solely on a username to verify someone's identity.
For businesses:
✅ Claim your brand username immediately.
✅ Publish your official username on your website and social media.
✅ Update security awareness training to include this new attack vector.
