Passwords: Reuse Pumps Up Crime
April 8, 2025
Cloudflare reports that password reuse is one of the biggest mistakes users make that compromises their personal information online. Cloudflare monitored traffic through their services between September-November 2024 and discovered that 41% of all logins for Cloudflare protected Web sites used compromised passwords. Cloudflare discussed why this vulnerability in the blog post: “Password Reuse Is Rampant: Nearly Half Of Observed User Logins Are Compromised.”
As part of their services, Cloudflare monitors if passwords have been leaked in any known data breaches and then warn users of the potential threat. Cloudflare analyzed traffic from Internet properties on the company’s free plan that includes the leaked credentials feature.
When Cloudflare conducted this research, the biggest challenge was distinguishing between real humans an d bad actors. They focused on successful login attempts, because this indicates real humans were involved . The data revealed that 41% of human authentication attempts involved leaked credentials. Despite warning PSAs about reusing old passwords, users haven’t changed their ways.
Bot attacks are also on the rise. These bots are programmed with stolen passwords and credentials and are told to test them on targeted Web sites.
Here’s what Cloudflare found:
“Data from the Cloudflare network exposes this trend, showing that bot-driven attacks remain alarmingly high over time. Popular platforms like WordPress, Joomla, and Drupal are frequent targets, due to their widespread use and exploitable vulnerabilities, as we will explore in the upcoming section.
Once bots successfully breach one account, attackers reuse the same credentials across other services to amplify their reach. They even sometimes try to evade detection by using sophisticated evasion tactics, such as spreading login attempts across different source IP addresses or mimicking human behavior, attempting to blend into legitimate traffic. The result is a constant, automated threat vector that challenges traditional security measures and exploits the weakest link: password reuse.”
Cloudflare advises people to have multi-factor authentication on accounts, explore using passkeys, and for God’s sake please change your password. I have heard that Telegram’s technology enables some capable bots. Does Telegram rely on Cloudflare for some services? Huh.
Whitney Grace, April 8, 2025
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