Around 241,000 threats a week, stopped on hospital guest WiFi
Patients and visitors bring devices onto hospital WiFi that nobody has checked, on a site where nothing can afford to go wrong. At St George's Healthcare NHS Trust, Shield blocks around 241,000 threats a week on the guest WiFi. Threats means malware, phishing and command-and-control lookups stopped by Shield.
What is at stake
Unchecked devices on a critical site
Infected visitor devices
A device calling home to its command-and-control server shares the network with everyone else.Patients and families
Guest WiFi still needs family-safe content.Ageing firewalls
A layer behind the firewall closes the gaps hardware leaves.
How Shield fits
Guest, staff and clinical networks kept apart
- Patient and visitor WiFiThreat defense and family-safe categories, with ad blocking to keep it fast.
- Staff WiFiThreat defense first, with its own allow and block lists.
- Devices and IoTxPSK networks on their own VLANs, each with its own policy.
- Fails closedAn outage never opens the network up.
See everything Shield stopsSecure staff networks on Purple Access
- OpenGuest WiFi through a captive portalStrict, family-safe
- SecurePasspoint and OpenRoaming, staff on EAP-TLS with MDMThreat defense first
- xPSKThings, communities and concessionsSafeguarding per group
Proof
Around 241,000 threats a week, stopped
- 241k
- threats blocked a week on guest WiFi at St George's Healthcare NHS Trust
- 10 days
- earlier warning of new threats than standard blocklists
- ISO 27001certified, alongside GDPR, CCPA and Cyber Essentials
FAQ
Questions we hear from teams like yours
Does Shield replace the hospital firewall?
No. It is an extra layer behind it that blocks lookups before a connection starts and covers guest devices a firewall agent never touches.
What happens if Shield goes down?
It fails closed, across multiple data centers, so the network is never left unfiltered.
Other industries
Public sector
Public WiFi that is safe for everyone who walks in
Family-safe WiFi for councils, libraries, airports and public spaces, with threat defense per site and per network.Offices
Protective DNS: a threat layer behind the office firewall
Threat defense behind the firewall, with staff and guest networks kept apart.Hospitality
Family-safe, faster guest WiFi with protective DNS for pubs, hotels and venues
Family-safe guest WiFi and faster pages for pubs, hotels and family venues.
Decide what your WiFi reaches, free for 30 days
Tell us which networks you run and who is on them. We map a policy to each one: guests, staff, students, residents and paid tiers. Then point one network at Shield and see what it stops for 30 days, before you pay anything. Running change control? We plan a pilot on one SSID with your team instead. No hardware, no agents on devices.
- We map your networksA Purple expert maps your networks, your venues and the people on each, and answers your questions on bypass, outages, data handling and integrations.
- You get a policy for each oneGuests, staff, students, residents and paid tiers, each with the policy it needs.
- You prove it, then get your tailored quote30 days free on one network, or a pilot on one SSID planned with your team, then Shield priced standalone or as an add-on to your Access plan.
Your policy map
Tell us your networks. We map a policy to each one.
A Purple expert comes back with a policy for every SSID you run, from the team that has run content filtering on WiFi since 2012 and runs WiFi for 80,000+ venues in 90 countries.