PanicStation.org
UK USA
uk Technology & digital loss

What to do if…
your browser shows connection not private warnings on many trusted sites at once

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy UK guide

Short answer

Stop typing passwords, card details, or work logins into any site while the warnings are appearing. Move to a known-safe connection, such as mobile data, and check your computer’s date, time, and time zone before trying again.

Do not do these things

  • Don’t click through the warning to log in, pay, or enter personal information.
  • Don’t install any certificate, security update, browser fix, or remote-access tool offered by a pop-up or unfamiliar site.
  • Don’t call any phone number shown inside a warning page or pop-up.
  • Don’t keep testing banking, email, work, or shopping sites on public Wi-Fi while the warnings continue.
  • Don’t permanently disable security protections just to make the warning disappear.
  • Don’t assume you have been hacked before checking the common causes.

What to do now

  1. Stop the risky action. Close any tabs where you were about to sign in, pay, reset a password, or open work systems.

  2. Check your computer’s date, time, and time zone. Correct them if they are wrong, then close and reopen the browser and try one trusted site again. A wrong clock can make many valid certificates look invalid.

  3. Switch networks to test whether the connection is the problem.

    • If you are on public Wi-Fi, disconnect and try mobile data or a phone hotspot.
    • If you are on home Wi-Fi, try a phone hotspot briefly.
    • If the warnings stop on the hotspot, pause use of the original network for sensitive activity.

  4. If the Wi-Fi normally needs a sign-in page, try to reach the sign-in page safely.

    • Disconnect and reconnect to the Wi-Fi.
    • Open a simple non-sensitive website that starts with http rather than https.
    • If the login page does not appear, do not force your way through certificate warnings. Use mobile data or ask the venue for the correct network name and sign-in steps.

  5. Temporarily test connection-altering tools.

    • Turn off a VPN or proxy briefly, then retest one trusted site.
    • If antivirus or security software has an HTTPS scanning or encrypted web scanning feature, turn that feature off briefly only for the test, then turn it back on.
    • If this is a work, school, or managed device, do not change managed security settings. Contact the IT or service desk.

  6. If this is a work, school, or managed network, report it. Say: “I’m getting certificate or ‘connection not private’ warnings on multiple trusted sites at once.” Follow their instructions rather than installing certificates yourself.

  7. If you entered a password after the warnings began, secure the most important account first. From a known-good connection or device, change your email password first, then any banking, shopping, work, or reused passwords. Turn on two-step verification where available.

  8. If money, card details, or identity details may have been exposed, stop testing the site. Contact your bank using the number on your card or in your banking app, not a number from a message, advert, pop-up, or warning page.

  9. If you think the page was a scam website, report it when you are on a safe connection. You can report suspicious websites to the National Cyber Security Centre. If you have lost money or shared details, Report Fraud is the reporting route for England, Wales, and Northern Ireland; in Scotland, report fraud through Police Scotland routes such as 101.

What can wait

  • You don’t need to wipe your computer or reinstall everything right now.
  • You don’t need to decide whether you have been hacked before checking the clock, Wi-Fi, VPN, proxy, and security software.
  • You don’t need to contact every website individually when many trusted sites are failing at once.
  • You don’t need to solve router settings, browser extensions, or operating system updates before you have stopped sensitive activity and tested a safe second connection.

Important reassurance

This warning can appear for ordinary reasons, including a wrong clock, a Wi-Fi sign-in page, a VPN, a proxy, or security software inspecting encrypted traffic. Pausing is still the right move because the main risk is entering sensitive information while you do not know why the warning is appearing.

Scope note

These are first steps only, to reduce immediate risk and narrow the cause. If the warnings continue across more than one safe network after the clock and connection checks, get hands-on help from a trusted IT support person, your organisation’s service desk, or the device manufacturer’s support.

Important note

This is general information, not legal, medical, financial, therapeutic, security, or other professional advice. If you think you exposed passwords, payment details, or identity information, prioritise securing accounts and contacting the relevant provider.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

Support us