Last year, we raised the minimum TLS Diffie-Hellman group size from 512-bit to 1024-bit. As mentioned then, 1024-bit is insufficient for the long-term. However, metrics report that around 95% of DHE connections seen by Chrome use 1024-bit DHE. This, compounded with how DHE is negotiated in TLS, makes it difficult to move past 1024-bit. Servers should upgrade to ECDHE if available. Otherwise, ensure a plain-RSA cipher suite is enabled.