Certificates issued by GeoTrust, RapidSSL, Symantec, Thawte, and VeriSign are no longer considered safe because these certificate authorities failed to follow security practices in the past.
由 GeoTrust、RapidSSL、Symantec、Thawte 以及 VeriSign 颁发的证书已不再认为具有安全性，这些证书颁发机构过往未遵循安全准则。