사용자별 브라우저들의 자동업데이트 시기에 따라서 https 보안접속으로 사이트 접속시 뜨는 메시지입니다.
https 암호화 보안 접속시 TLS 구버전을 앞으로 지원안하겠다는 안내문이므로 그냥 일단 주소줄이 암호화 보안 접속 경로인 https로 시작하는 경우 일반 접속 경로인 http 로 접속하시거나 브라우저의 보안관련 항목의 체크를 해제하는 방법 정도가 있겠습니다.
TLS 1.2로 올리는 작업을 해야하긴 하는데 그건 각 사이트 관리자분들의 여건(시간, 예산 등)에 따라 적용 여부 및 시기 등의 변수가 좀 다양할 수 있습니다.
CHROME REMOVES TLS 1.0 AND TLS 1.1
Google has now removed support for the TLS 1.0 and TLS 1.1 ciphers. These two ciphers are considered insecure. Websites that load via HTTPS and use these two ciphers will be blocked in Chrome by default and users will see an error message like the one below.
Chrome and all other major browsers have announced plans to dump TLS 1.0 and TLS 1.1 since 2018, so most websites have already updated their HTTPS certificates. However, there's always sites that lag behind. Users should expect some of these messages to pop up once in a while as they try to access older or unmaintained websites.
Just like many recent Chrome features, this was actually scheduled to go into effect earlier this year, in Chrome 81, but Google delayed its rollout because of the coronavirus pandemic. Google believed this would have resulted in extra work for webmasters and system administrators who were already busy dealing with new work-from-home schedules.
https://www.zdnet.com/article/chrome-84-released-for-blocking-notification-popups-on-spammy-sites
