Behavior-based detection · No blocklists · 100% local

Stop phishing
before it lands.

Sentinel Pro analyzes attacker behavior in real time — catching phishing pages, lookalike domains, and credential traps that blocklist-based tools miss entirely.

https://your-bank-login.secure-auth.co/signin
Phishing detected
Sentinel Pro · 12ms
Lookalike domain
98%
Credential form mimic
94%
Brand impersonation
91%
Behavior signature matched in real time. Page blocked before input.
LOCAL · 0 NETWORK
< 50ms
Detection latency
0
Network calls per scan
40k+
Phishing variants caught
None
Blocklists required
How it works

A new way to catch phishing

Blocklists are always one step behind. Sentinel Pro watches for the techniques attackers use, not the domains they happen to use today.

01

Behavior, not blocklists

Sentinel watches how a page behaves — DOM mutations, form patterns, brand mimicry — to recognize phishing the moment it happens. No waiting for a domain to be reported.

02

Real-time analysis, locally

Every signal is processed inside your browser or desktop app. Pages, links, and clipboard contents never leave your device.

03

Block, warn, or allow

When a threat crosses the threshold, Sentinel blocks the page before any input reaches the attacker — and explains exactly why.

What's inside

Six layers of phishing defense

Each one runs locally and works the moment you install.

Real-time link scanning

Hover-preview every link. Sentinel inspects destination, redirects, and behavior signals before the click — and intercepts the navigation if it's malicious.

Gmail scanning

Inline analysis of inbox messages. Sender reputation, lookalike domains, urgency cues, and credential-grab patterns flagged before you open them.

Clipboard protection

Detects address-swap malware, suspicious payment URLs, and crypto address tampering at paste-time — protecting transactions from silent rewrites.

AI assistant

Ask Sentinel to explain why a page was flagged, walk through suspicious headers, or assess a link you're unsure about — all in plain language.

Desktop app sync

The Windows companion mirrors detections across browsers and apps, scans email clients beyond the browser, and keeps your protection consistent.

100% local processing

No cloud lookups. No telemetry. No URLs leaving your machine. Sentinel was built privacy-first — and stays that way.

Privacy by design

Your browsing
never leaves your device.

Other phishing tools rely on cloud lookups — meaning every URL you visit gets shipped to someone else's servers. Sentinel runs the entire detection pipeline on your machine. No hashes phoned home. No "anonymized" telemetry. Nothing.

  • No URLs sent to remote servers
  • No usage tracking or telemetry
  • No cloud-based blocklists
  • Works fully offline
0
Network calls
per scan
42ms
Avg latency
local inference
None
Data shared
ever
< 2%
CPU overhead
background
Pricing

Pick what fits

One-time purchase or monthly subscription. Both come with every feature, every update.

Monthly

$9.99/ month

Cancel anytime. Best to try it out.

  • All detection features
  • Gmail & clipboard scanning
  • AI assistant
  • Desktop app sync
  • Priority email support
Subscribe
Most popular

Lifetime

$149one-time

One payment. Forever updates. Best value.

  • Everything in Monthly
  • All future updates included
  • No subscription, ever
  • Lifetime priority support
  • Early access to new features
Buy Lifetime

Want to test before you pay? Install the free Chrome extension.

For teams

Business plans

Roll out Sentinel Pro across your organization. One-time purchase, lifetime updates, transferable seats.

Small teams
5 seats
$999one-time
  • All Pro features
  • Centralized licensing
  • Priority support
  • Lifetime updates
Get 5 seats
Most teams
10 seats
$1,499one-time
  • All Pro features
  • Centralized licensing
  • Priority support
  • Lifetime updates
Get 10 seats
Growing orgs
25 seats
$2,999one-time
  • All Pro features
  • Centralized licensing
  • Priority support
  • Lifetime updates
Get 25 seats
Need more seats or custom rollout? Talk to us →
FAQ

Common questions

How is this different from Safe Browsing or my antivirus?+
Both rely on blocklists — once a phishing site is reported and added. Sentinel Pro recognizes phishing techniques themselves, so brand-new attack pages (which is most of them) get caught the first time someone visits.
Does Sentinel really not send any data to the cloud?+
Correct. The detection model and behavior heuristics live entirely in your browser and desktop app. URLs, page content, clipboard data, and email contents never leave your device.
What's the difference between the Chrome extension and the desktop app?+
The extension protects your browser. The Windows desktop app extends that protection to system-wide email clients, links opened from outside the browser, and clipboard activity across applications. They sync detection state when both are installed.
Lifetime vs. monthly — what should I pick?+
Monthly is a low-risk way to try it. Lifetime pays for itself after about 15 months and includes every future update. Most users go lifetime once they trust it.
Can I deploy it across my company?+
Yes. The Business plans include 5, 10, or 25 lifetime seats with centralized licensing. Need more? Reach out via Gumroad and we will arrange a custom plan.

Stop reacting. Start catching.

Install in 30 seconds. No account. No telemetry. Just protection that actually works.