Major Credential-Stuffing Campaign Hits Cloud Environments — Millions of Logins Attempted
A large-scale automated credential-stuffing campaign is being observed across multiple cloud platforms, targeting reused usernames and passwords from past breaches.
🔍 What Happened?
Cloud Security Alliance reported an organized credential-stuffing campaign targeting Microsoft Azure environments. Reference: https://cloudsecurityalliance.org/articles/community-alert-organized-credential-stuffing-attack-observed-on-azure-cloud-environments
Fortinet notes that stolen valid credentials account for 86% of web-application breaches. Reference: https://www.fortinet.com/resources/articles/credential-compromise-attacks
Cloudflare explains credential stuffing as attackers using leaked username/password pairs with automation. Reference: https://www.cloudflare.com/learning/bots/what-is-credential-stuffing/
⚠️ Why This Matters
Credential stuffing succeeds only because people reuse passwords across websites.
Attackers don’t need advanced hacking — just old leaked credentials and automation.
Cloud services, email accounts, banking apps, and social media are primary targets.
Reference (CrowdStrike overview): https://www.crowdstrike.com/en-us/cybersecurity-101/cyberattacks/credential-stuffing/
Reference (Fortinet analysis): https://www.fortinet.com/resources/articles/credential-compromise-attacks
🛡️ What You Should Do Now
Enable Multi-Factor Authentication (MFA)
Use unique passwords for every service
Use a password manager
Check if your email/password combo appears in a breach Reference (Have I Been Pwned research PDF): https://www.usenix.org/system/files/sec19-thomas.pdf
Monitor login attempts and enable sign-in alerts
🧭 The Bigger Picture
Attackers increasingly rely on:
Password reuse
Automation
Massive login lists sourced from old breaches
Lack of MFA
This makes credential-stuffing one of the most common real-world attack methods today.
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