у меня из-за этого отвалились амазоновские сервисы
пруф: http://metadata.ftp-master.debian.org/changelogs/main/o/openssl/openssl_1.1.0...
[ Kurt Roeckx ]
* Disable TLS 1.0 and 1.1, leaving 1.2 as the only supported SSL/TLS version. This will likely break things, but the hope is that by the release of Buster everything will speak at least TLS 1.2. This will be reconsidered before the Buster release.