of identity attacks observed by Microsoft were password-spray attacks.
Attackers often try a few common passwords across many accounts.Microsoft Digital Defense Report 2025 ↗A privacy-first password security lab
One password can unlock more than one account.
Analyze password patterns, check known breaches privately, generate safer credentials, and learn how real attacks work—without giving FunPass your password.
The scale of the problem
Password risk is
measured in real incidents.
These findings come from Microsoft, Verizon, and IBM security research. Together, they show how stolen credentials, password reuse, and automated attacks can turn a single exposed login into a much larger problem.
of breaches reviewed by Verizon began with compromised credentials.
A stolen login can become the front door to a larger breach.Verizon 2025 DBIR research ↗of saved passwords were distinct for the median user in Verizon’s infostealer dataset.
In that dataset, password reuse was more common than uniqueness.Verizon credential research ↗of daily authentication attempts were credential stuffing in Verizon’s median SSO dataset.
Automated attempts can blend into ordinary sign-in traffic.Verizon credential research ↗was the global average cost of a data breach in IBM’s 2025 research.
The damage can include recovery, downtime, lost business, and response costs.IBM Cost of a Data Breach 2025 ↗was the average time to identify and contain a breach in IBM’s 2025 study.
A breach may remain an active problem long after the first access.IBM 2025 breach report ↗Sources are linked on every card and were reviewed on August 27, 2026. The statistics describe different research populations, so they should not be added together or treated as a single measurement.
How one leak becomes many risks
A password does not have to be guessed if it has already been stolen.
The danger is not limited to the breached website. Password reuse lets attackers carry one exposed login from service to service.
A login is exposed
A password can be stolen in a breach, captured by phishing, or taken by infostealer malware.
Automation tests it elsewhere
Credential-stuffing tools try the same email and password on other services at enormous scale.
Reuse opens another door
If the password was reused, an unrelated account may be taken over without the password being guessed.
Unique credentials break the chain
A different password for every account—plus MFA or a passkey—limits what one leak can unlock.
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