RC4 is an encryption cipher used in protocols such as SSL / TLS .
RC4 ciphers have long been considered problematic because of their vulnerability to
a number of cryptographic weaknesses that can be exploited. To
know more about RC4 vulnerabilities, have a look at the current IETF draft .
We wish to bring to your
attention that due to these security vulnerabilities, we will be
phasing out support for the RC4 encryption algorithm from 28th Oct 2015 .
We will stop extending
support to the following RC4 ciphers for our SSL / TLS protocols.
TLS _ RSA _ WITH_RC4_128_ SHA
TLS _ ECDHE _ RSA _ WITH_RC4_128_ SHA
Analysis of connections
to Site24x7 services show that only 0.1% of users utilize RC4
in their protocols. As a Site24x7 user, depending on how you
access Site24x7 service, there are two cases in which this can
affect you -
Site24x7 services through API calls:
If you have
configured your integration to
access Site24x7 services through API calls, you may need to
reconfigure your current integration so that it uses a more
secure alternative such as AES. If your integration was
provided by a third-party vendor please do get in touch with
them and re-configure your integration. If you are uncertain
of your current integration, please provide us the name of your
third-party vendor or a copy of your code snippet so that we can
- Accessing Site24x7 services through
If you are accessing Site24x7 services using
Internet Explorer(IE6 or less) on Windows XP(or lower) you will
not be able to access site24x7.com. Similarly, people who access
Site24x7 services through outdated browsers on devices such as
old mobile phones will not be able to access
As a workaround, we strongly
recommend Windows XP users to switch to a newer version of
Windows. If this is not possible, you will need to use updated
versions of browsers such as Firefox/ Chrome to access
Please keep in mind that
failure to make these changes before 28th Oct 2015 will
render you unable to access Site24x7 services.
Please write back to us
if you need any clarification.