LeakCheck

Windows software checking passwords against known data breaches locally

Desktopfreemiumglobal

LeakCheck is Windows desktop software that compares passwords and email addresses against known breach records (sourced from Have I Been Pwned) locally on the user’s PC. It helps security-conscious Windows users determine whether credentials have appeared in data leaks without sending sensitive information off the machine, and a Professional Edition adds automatic ongoing monitoring.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of LeakCheck - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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