Breaking

Claude Code Reportedly Leaked User Email Addresses to Websites It Visited

November 6, 2026 at 06:18 EST

Security
Software Dev & Coding

Anthropic's coding tool Claude Code was reportedly attaching users' email addresses to web requests, exposing them to the sites it contacted, according to a social media post that has circulated among developers and users.

Claude Code · Reported data exposure

Claude Code reportedly attached users' email addresses to outbound web requests

When the tool searched the web or fetched a page, the user's email address was reportedly included in every request, exposing it to the sites it contacted. Anthropic has not yet confirmed the behavior or its scope.

1,184

Figure cited on the bug report. It is unclear whether this counts comments, reactions or subscribers.

Dozens

Scam and phishing emails per day, per one user's account. Not independently verified.

Official statements from Anthropic found in the research for this report.

What the available evidence includes

Count of each item found in the research (one block = one item)

Official Anthropic statement

Confirmed traffic analysis

Receiving sites identified

Individual user account

The only concrete account is a single user's report. Every structural question remains open.

How the reported leak would work

User's email address

→

Web search or page fetch

→

Email included in every request

→

Third-party sites may use it for spam or phishing

Why it matters

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