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Phishing Campaign Exploits Cloudflare and ZenDesk to Steal User Credentials

First seen 10 Nov 2025, 11:52 UTC • Cyberpress

•72% similarity •11.0

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A new phishing campaign is targeting customer support channels by abusing Cloudflare Pages and ZenDesk. Attackers have registered over 600 typosquatted domains to mimic legitimate support portals, aiming to steal user logins. This incident highlights the vulnerabilities in even well-protected platforms.

ThreatCluster AI

Attack Flow

14 entities, 25 inferred relationships (STIX 2.1).

Technique (4)

Data Breach
Malware
Phishing
T1566 - Phishing

Organization (3)

Cloudflare
Zendesk
AWS

Affected Platform (4)

Cloudflare Pages
Pages.dev
Workers.dev
ZenDesk Pages

Tool (2)

Google Cloud
Rescue

Vulnerability (1)

HTTP/2 Rapid Reset

Relationships

Google Cloud exploits HTTP/2 Rapid Reset
Rescue exploits HTTP/2 Rapid Reset
HTTP/2 Rapid Reset targets Cloudflare Pages
HTTP/2 Rapid Reset targets Pages.dev
HTTP/2 Rapid Reset targets Workers.dev
HTTP/2 Rapid Reset targets ZenDesk Pages
Data Breach targets Cloudflare Pages
Data Breach targets Pages.dev
Data Breach targets Workers.dev
Data Breach targets ZenDesk Pages
Malware targets Cloudflare Pages
Malware targets Pages.dev
Malware targets Workers.dev
Malware targets ZenDesk Pages
Phishing targets Cloudflare Pages
Phishing targets Pages.dev
Phishing targets Workers.dev
Phishing targets ZenDesk Pages
T1566 - Phishing targets Cloudflare Pages
T1566 - Phishing targets Pages.dev
T1566 - Phishing targets Workers.dev
T1566 - Phishing targets ZenDesk Pages
HTTP/2 Rapid Reset related to Cloudflare
HTTP/2 Rapid Reset related to Zendesk
HTTP/2 Rapid Reset related to AWS

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Phishing Campaign Exploits Cloudflare and ZenDesk to Steal User Credentials

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