# Why appear "connection lost" in browsers

**URL:** <https://discourse.nodered.org/t/why-appear-connection-lost-in-browsers/26907>\
**Category:** Dashboard\
**Created:** [19 May 2020 10:05 UTC](https://discourse.nodered.org/t/why-appear-connection-lost-in-browsers/26907 "2020-05-19T10:05:22Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [19 May 2020 18:16 UTC](https://discourse.nodered.org/t/why-appear-connection-lost-in-browsers/26907/8 "2020-05-19T18:16:54Z")

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Hi @TomLi the error you get - i get (when viewing your dashboard) too.

I dont know what is causing it but strongly suggest you [secure](https://nodered.org/docs/user-guide/runtime/securing-node-red) your installation ASAP...

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/4/d45d937af85da8a58fdd995920514aeb18913081.png)

... before it becomes a [cryptomining bot](https://discourse.nodered.org/t/about-unsecured-instances-of-node-red-having-a-crypto-mining-flow-automatically-deployed/6913)

You have no security on your broker or node-red (and who knows what else?)

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_[View the full topic](https://discourse.nodered.org/t/why-appear-connection-lost-in-browsers/26907)._