Instant Blocking
Bloom filter + Trie for sub-millisecond lookups. Blocks phishing before page loads.
Why OverPhish stands out
Daily Updates
Aggregates the top 5 phishing & malware blocklists — every 24 hours.
Zero-Trust Architecture
No accounts, no telemetry, no data ever leaves your browser.
Lightweight
Under 300KB. No performance impact — even on low-end devices.
Viewable Source
Fully auditable code. Verify everything yourself in a public repository.
Clear Warnings
Vivid block page with “Allow Once” and “Whitelist” options to tailor your experience.
Get in Touch
Questions, comments, or just want to say hi? We’d love to hear from you.
Frequently Asked Questions
It’s live right now! Install it directly from the Chrome Web
Store.
Nope! Core protection is free forever and fully auditable.
Chrome, Firefox, Edge, Brave, and all Chromium-based browsers at launch. Safari support
planned.
Absolutely not. OverPhish runs 100% locally and never phones home
except
for blocklist updates.