Phishing and scams
Fake bank logins, parcel delivery texts, too-good-to-be-true deals. Known scam and phishing domains are blocked before the page loads on devices using Koru Shield.
The internet, minus the dangerous parts.
Known scam, malware, ad and tracker domains are blocked on devices using Koru Shield. Set it up once. It quietly does the rest.
- Free plan, no credit card
- 30-day money-back on paid plans
Free plan, always onProtection never silently switches off
About a minuteGuided setup per device
Private by designYour data is never sold
US-firstServers in Northern Virginia and Oregon
What it blocks
Known bad stuff gets stopped.
Koru Shield checks domains against threat intelligence before your device connects, and known dangerous, annoying, or creepy domains are stopped at the door on devices using Koru Shield.
Protection applies only on devices set up with Koru Shield. A VPN that routes DNS through its own servers bypasses filtering. Android Private DNS uses DNS-over-TLS, which Koru Shield does not offer, so Android needs a compatible DNS-over-HTTPS app or profile. Devices without Koru Shield configured are not filtered.
Malware and ransomware
Sites that distribute malware. Known malware domains are blocked on devices using Koru Shield.
Creepy trackers
The invisible trackers that follow you from site to site, building a profile on you. Known tracker domains are blocked on devices using Koru Shield.
Annoying ads
Pop-ups, auto-play video ads, and the ad networks that make every page slower. Known ad networks are blocked on devices using Koru Shield.
Adult content
An optional family filter keeps known blocked adult and gambling domains off devices in the house using Koru Shield.
Fake stores
Lookalike shops built to steal your card number at checkout. Known phishing and scam domains are blocked automatically on devices using Koru Shield.
How it works
Protected in four small steps.
No apps to babysit, no settings to memorize. Here is the whole thing.
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Create your free account
One email, about thirty seconds. No credit card, no commitment.
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Point your devices at Koru Shield
Follow the guided setup for iPhone, Android, Windows, Mac, or Linux. About a minute each.
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Every destination gets checked first
Each time a device asks to visit somewhere, Koru Shield checks it against live blocklists in milliseconds, over encrypted DNS.
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Known bad stuff is stopped
Known blocked scam, malware, and tracker domains are stopped before a connection is made on devices using Koru Shield. Protection applies only on devices set up with Koru Shield. A VPN that routes DNS through its own servers bypasses filtering. Android Private DNS uses DNS-over-TLS, which Koru Shield does not offer, so Android needs a compatible DNS-over-HTTPS app or profile. Devices without Koru Shield configured are not filtered.
See it in action
What protection looks like.
Illustrative examples of the Koru Shield experience on a protected device.
This site was blocked
fake-bank-login.com was stopped because it appears on a known phishing list. Nothing on this page was allowed to load.
Honest block pages. When something is stopped, you see what it was and why, with a way to allow it if you choose. No silent failures, no mystery.
Without Koru Shield
Auto-play video ad
Pop-up: you won a prize
Loaded in 6.2s · 14 trackers
With Koru Shield
Ads and trackers removed
Loaded in 1.8s · 0 trackers
Faster, cleaner pages. Blocking ads and trackers at the DNS level means pages load noticeably faster and there is simply less junk on them. Times shown are illustrative.
For families
Protection for devices set up with Koru Shield.
Turn on the family filter to block known adult, gambling, and scam domains on devices set up with Koru Shield, at home and on the go. Protection applies only on devices set up with Koru Shield. A VPN that routes DNS through its own servers bypasses filtering. Android Private DNS uses DNS-over-TLS, which Koru Shield does not offer, so Android needs a compatible DNS-over-HTTPS app or profile. Devices without Koru Shield configured are not filtered.
- Blocks known adult and gambling domains on devices using Koru Shield
- Stops known phishing domains on devices using Koru Shield
- Separate profiles per device as the kids grow
Use cases
See what it does for your house.
Real situations, not feature bullets: bedtime and homework schedules, and known scam domains stopped on devices using Koru Shield.
For parents
Bedtime and homework schedules that apply themselves, a profile per kid (Family Space), and one-rule blocks for the viral app of the week.
For seniors
Known phishing and scam domains blocked on devices using Koru Shield, with setup and management handled by someone they trust.
For everyone
Known phishing, malware, ad, and tracker domains blocked quietly in the background on devices you set up with Koru Shield.
Pricing
Free to start. Fair to upgrade.
Start free with always-on protection, upgrade only if you want more. No hidden tiers, no sales calls.
Free
$0
Available now
Core protection for everyday browsing.
- Blocks malware, phishing, and scams
- Blocks ads and trackers
- Family content filter
Guardian
$5/ month
Available now
More history, rules, and priority support.
- Everything in Free
- 30-day query history and analytics
- Priority support from real humans
- 100 custom rules
Family Space
$8/ month
Available now
Healthy screen habits for the whole household.
- Everything in Guardian
- Per-child profiles and time limits (homework, bedtime windows)
- Calendar exceptions on schedules
- Multiple caregiver accounts with roles
- 500 custom rules
Prosumer
$15/ month
Available now
Pro-grade defense for home labs and offices.
- Everything in Family Space
- 2,000 custom rules
- REST API and MCP automation
- Policy simulator, revisions, and audit trail
- Local DNS records
- Canary rollout of profile revisions; fleet promotion and rollback managed by system operators
Not sure which plan fits? Take the 30-second quiz
No credit card required. 30-day money-back guarantee on every paid plan.
Referrals
Give a month, get a month.
Share Koru Shield with someone you care about. They get their first month of Guardian free, and you earn a free month for every friend who joins — up to 12 free months.
Why Koru Shield
Built like it should be.
Private by design
We never sell your data, and we never will. Your browsing history is yours alone.
Fast by architecture
Checks run in milliseconds on servers in Northern Virginia and Oregon, so browsing stays fast with no noticeable slowdown for most sites.
Honest blocking
When something is stopped, you see a clear page that says what and why, with a way to allow it if you choose.
FAQ
Questions, answered plainly.
What exactly does Koru Shield do?
Every time you visit a website, your device first asks for directions to it. Koru Shield is the service that gives those directions, and it simply refuses to point you toward places known to be dangerous: scam sites, malware, trackers, and ads. Safe sites load exactly as normal.
Do I need to install an app?
Usually not. On most devices you change one setting, and our guided setup walks you through it in about a minute. See the setup guides for your device.
Will it slow down my internet?
No. The safety check happens in milliseconds before a page starts loading, and blocking ads and trackers often makes pages load noticeably faster.
Is my browsing data sold or shared?
Never sold, never shared for advertising. We keep only the minimum needed to run the service and show you your own activity. Read the privacy policy.
What is the catch with the free plan?
There is none, and unlike some competitors we never silently switch your free plan to unfiltered resolving. Free covers the core protection most people need, always on.
Which devices are supported?
iPhone, iPad, Android, Windows, Mac, Linux, most routers, and anything else that connects to the internet. If a device has network settings, Koru Shield can protect it.
Get the internet you always wanted.
Koru Shield is live. Create your free account and protect your first device in minutes.
30-day money-back guarantee on every paid plan. Refer friends, earn free months.