A subscriber of the Belarusian operator A1 reported a certificate error on the official Telegram website - t.me. Instead of the original GoDaddy certificate, a certificate is provided from a certain "OSOO Alternative Digital Network". In the course, it turned out that in this way A1 is unsuccessfully trying to show a stub about blocking a web resource.
Earlier in Belarus, the Nekhta channel was recognized as extremist and a resolution was adopted on the need to block it.
The error occurs due to the fact that the provider is trying to take secure traffic under its control: in order to view or modify the transmitted data, the provider must replace the legitimate certificate with its own, but modern browsers do not trust such certificates.
In this case, the error is harmless, but in the future, intelligence services may try to listen to traffic in a similar way, performing a so-called MITM attack. They tried to deploy such tactics in Kazakhstan , but after the failure the idea was abandoned.
Never install certificates on your device if the carriers convince you to do so: this directly gives your ISP access to all web traffic.
Correspondence in official Telegram clients remains secure, since Telegram uses its own protocol, independent of this wiretapping technique.
For Telegram links to work on Android again, you need to install Telegram as the default app to open such links:
- If, when you click on a link, you are prompted to open it in Telegram or a browser, choose Telegram.
- If the pop-up window does not appear: Hold down the Telegram icon and open the "About application" item. Select the "Default Actions" section. Under Open Supported Links, select Open or Allow.
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