Just had this pop up.

[Mr Ripple]

Anything to be concerned about?
Never had it before.

 

[mattyk2010]

@junglist do you still look in on stuff like this?

 

[Tazd]

Working fine here on Firefox on android 10. May be worth checking that the time and date are correct on your pc as seen stuff like that when cmos battery dies or gets low.
Will try on the laptop later see if I get the same popup

 

[Miss Pepper]

@OccultScientist

 

[nwhornet]

Likely to be security certificates on the device are out of date.

 

[OccultScientist]

Thanks @Miss Pepper, I updated the SSL certs the other day.
I'll double-check them

 

[OccultScientist]

@StrawberryRipple - you need to just close and open your browser, caching perhaps?

 

[Mr Ripple]