CKingX maintains a focused catalog built around a single, highly specialized security utility: a command-line wrapper for the HaveIBeenPwned breach-alert service. The tool is aimed at power-users, system administrators, and privacy-minded individuals who need to check large sets of e-mail addresses or account identifiers against public data breaches without exposing that data to third-party web forms. By pulling breach metadata directly from HaveIBeenPwned’s v3 API and storing it locally in a compressed Binary Fuse filter, the program shrinks multi-gigabyte breach lists into a memory-efficient snapshot that can be queried offline in milliseconds. Typical workflows include scheduled audit scripts that scan corporate address books, CI pipelines that fail a build when developer e-mails appear in new breaches, or portable “breach-kit” flash drives used by incident-response teams during on-site assessments. Because the filter is incremental, it can be refreshed nightly with delta downloads, keeping bandwidth low while ensuring the latest breach additions are recognized immediately. The utility is cross-platform, requires only a minimal C++ runtime, and can be piped into PowerShell, Bash, or batch scripts for automated reporting. CKingX’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always install the newest release, and support batch installation alongside other applications.

haveibeenpwned

haveibeenpwned is a command-line application that uses HaveIBeenPwned service and can create and use Binary Fuse filter (which is smaller than Bloom filter or Cuckoo filter for the same false positive ratio) for efficient query at cost of false positives.

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