^{† Denotes update to the article}

CME Group is committed to information security. To deliver the best security and customer experience, we are eliminating support of the RC4-based cipher suites for CME Group web-based applications, APIs, and service in Certification, New Release, and Production environments.

As of this change, customers relying on RC4 cipher suites will no longer have access to these web-based applications, APIs, and services.

Please note: CME Group strongly encourages customers to verify connections so those environments continue to function properly.

RC4 cipher suites support will be removed as follows:

• † Production: Saturday, June 6, 2015 at 6:00 a.m. (CT)

Customers following CME Group Web Browser Standards should not be impacted by this change. However, if customers connect through a proxy, they should ensure their proxy utilizes one or more of these CME Group supported ciphers:

• TLS_RSA_WITH_AES_256_CBC_SHA256
• TLS_RSA_WITH_AES_256_CBC_SHA
• TLS_RSA_WITH_AES_128_CBC_SHA256
• TLS_RSA_WITH_AES_128_CBC_SHA

The change in Certification and New Release environments is complete.

Starting Monday, June 15, 2015, CME Clearing will begin a phased approach to automating the account set-up process. Benefits include:

• Decreased turnaround times for setting up new OTC accounts.
• Eventual removal of the Consolidated Account Sheet.
• Increased Clearing Firm control of the account set-up process.

Please note: This change does not affect Portfolio Margining, CME Clearing Europe, or New Release account set-ups. These processes will continue to require a Consolidated Account Setup Sheet.

CME Clearing will implement this upgrade in two phases:

Phase 1: Monday, June 15, 2015

CME Clearing will no longer provide mapping documentation to affirmation platforms.

• Clearing Member Firms will need to communicate account/alias mappings to the desired platforms. To assist with this change, CME Clearing publishes account-level mapping data in the PlatformMapping_XXX_YYYYMMDD.csv file, where “XXX” is the Clearing Member Firm ID. This file is published daily between 5:00 and 5:30 pm Central Time (CT) to the secure FTP.
• CME Clearing also publishes the Account Reconciliation file, AccountRecon_XXX_YYYYMMDD.csv, which contains all details needed for platform account setups.

Phase 2: Monday, June 29, 2015

CME Clearing will no longer require Clearing Member Firms to send the Consolidated Account Setup Sheet for OTC account creation.

• Information formerly communicated through the Consolidated Account Setup Sheet will now be entered directly into CME Account Manager.
  • CME Clearing will finalize the account creation within 24 hours of the account being entered into CME Account Manager.
• Once the account is fully setup, it will display in your "Platform File" as eligible to be mapped and will be marked as complete on your Account Reconciliation file.

Please Note: The process of adding new accounts to CME Account Manager will not change. The procedure is outlined within the CME Account Manager WebHelp.

Additional information including platform mapping file examples is available here.

If you have any questions, please contact Client Services at +1 312 338 7112.

CME Clearing House processing will be paused from 18:55 - 19:05 Central time (CT) on Tuesday, June 30, for the leap second, including CME Account Manager. CME Group strongly recommends customers finish their processing prior to 18:55 CT and do not access any CME Clearing House systems during this window.

CME Group uses Network Time Protocol (NTP) to synchronize time and maintain time accuracy. On Tuesday, June 30 (trade date Wednesday, July 1), a positive leap second will be added after 18:59:59 CT. A leap second is a one-second adjustment that is added to Coordinated Universal Time (UTC) to account for variability of the earth’s rotation.

Please contact the Global Command Center (GCC) in the U.S. +1 800 438 8616, in Europe at +44 800 898 013 or in Asia at +65 6532 5010.

Additional information is available at cmegroup.com/leapsecond