This August, Microsoft will issue an update, which will block the use of cryptographic keys shorter than 1024-bit.
Modification is for Windows Server 2008 R2, Windows 7, Windows Server 2008, Windows XP, Windows Server 2003 R2, Windows Server 2003 and Windows XP. The update will exclude using only those websites, platforms, applications and files that were signed with keys less than 1024-bits prior 1st January 2010.
Change should not be perceptible to internet users, because SSL certificates are issued for a specific period, after which it is necessary to renew the product according to current standards. It is estimated that nowadays most web applications and sites use encryption keys at least 2048-bit.
NIST (National Institute of Standards and Technology) is responsible for setting new safety on-line standards. Organization has announced that the next update for keys will be held at the end of 2013. This will be the moment of cancelling a 1024-bit keys.
Today, the only encryption key recognized by NIST is 2048-bit. Popularize the use of the key length it has been carried out for over 3 years, and from approximately 2 most CAs do not accept CSR files generated under this standard.
Source: Windows PKI blog
If you run a online business, you are sure to use Google AdWords. Perhaps this is one of the main traffic sources on your site, so the last message you want to see is "Your account has been suspended ...". And yet, you can expect it if your site is not SSL-secured.
Starting 1st of August 2016, Comodo and DomenySSL will no longer offer SGC variants of certificates. As your account has a valid SGC certificate which will be up for renewal in the future, the company has prepared a list of recommended alternatives.
Thawte is only one of the few vendors outside of the United States. As the main competitor of American vendors quickly gained a 40 % share of the market SSL certificates.