Comcast Selects Cloudmark Sender Intelligence to Enhance Protection against Messaging Abuse for 25 Million Email Boxes

SAN FRANCISCO--(BUSINESS WIRE)--Cloudmark, Inc., the global leader in carrier-grade messaging security, today announced that Comcast Corporation (Nasdaq: CMCSA, CMCSK), one of the nation?s leading providers of entertainment, information and communications products and services, has selected Cloudmark® to protect its 15.3 million High-Speed Internet customers and 25 million email boxes from messaging threats. Comcast selected and has completed deployment of Cloudmark Sender Intelligence? (CSI), a comprehensive global sender monitoring and analysis system, to augment its current Cloudmark Authority® messaging anti-abuse deployment, to provide its customers with increased protection against rapidly evolving spam, viruses and phishing attacks. CSI includes data regarding spam resulting from bot infections on Comcast's network, and serves as a component of Comcast's new Constant Guard(tm) security program. Comcast is a noteworthy addition to Cloudmark?s growing list of customers, which includes the top 12 North American service providers.

?Comcast?s deployment of Cloudmark Sender Intelligence is an important component of our recently launched Constant Guard(tm) security program, as well as our anti-abuse defenses for Comcast SmartZone(tm), and reinforces our commitment to providing customers with the best and safest email and Internet experience,? said Jason Livingood, executive director of internet systems engineering at Comcast. ?Cloudmark has enabled us to deploy accurate, constantly updated messaging-related security defenses that easily scale to protect millions of users and which delivered an immediate ROI by reducing the burden of spam coming into our network. This helps keep our customers more secure and satisfied with their Comcast High-Speed Internet experience.?

Working together, CSI and Cloudmark Authority provide cloud-based intelligence that combines timely and accurate reputation data on good, bad and suspect senders with the industry?s most accurate and highest performing message filtering capabilities. CSI leverages real-time data from Cloudmark?s Global Threat Network to create the industry?s most comprehensive sender IP reputation service. It analyzes traffic patterns, feedback and fingerprint correlation statistics to establish and adjust sender reputation scores in near-real-time. Data from CSI can be integrated into network perimeter devices to protect the messaging infrastructure against spam, phishing, zombies, botnets and advanced converged threats. Additionally, CSI provides significant additive security coverage to existing DNS-based Blacklists (DNSBLs) and reduces potential false positives.

Cloudmark Authority?s carrier-grade messaging security solution uses a unique combination of Advanced Message Fingerprinting? and real-time threat reporting from the Cloudmark Global Threat Network?, consisting of trusted users in 190 countries around the globe. Users are instantly protected from the latest attacks as Cloudmark Authority is automatically updated every 30-60 seconds with new threat data. Cloudmark Authority also requires significantly less processing power than competitive solutions and lowers CPU requirements by up to 90 percent.

?Leading ISPs like Comcast recognize the benefits of Cloudmark?s carrier-grade protection, which eliminates inbound messaging abuse before it impacts the email infrastructure and subscriber in-boxes,? said Hugh McCartney, CEO of Cloudmark. ?Cloudmark values the strategic relationship with Comcast and looks forward to continuing to work closely together on new messaging-related security initiatives.?

About Comcast Corporation

Comcast Corporation (Nasdaq: CMCSA, CMCSK) (www.comcast.com) is one of the nation?s leading providers of entertainment, information and communication products and services. With 23.9 million cable customers, 15.3 million high-speed Internet customers, and 7.0 million Comcast Digital Voice customers, Comcast is principally involved in the development, management and operation of cable systems and in the delivery of programming content.

Comcast?s content networks and investments include E! Entertainment Television, Style Network, Golf Channel, VERSUS, G4, PBS KIDS Sprout, TV One, ten sports networks operated by Comcast Sports Group and Comcast Interactive Media, which develops and operates Comcast?s Internet businesses, including Comcast.net (www.comcast.net). Comcast also has a majority ownership in Comcast-Spectacor, whose major holdings include the Philadelphia Flyers NHL hockey team, the Philadelphia 76ers NBA basketball team and two large multipurpose arenas in Philadelphia.

About Cloudmark

Cloudmark, Inc. is a global leader in carrier-grade messaging security, delivering the industry?s fastest, most accurate and comprehensive real-time spam, virus and phishing protection for fixed, mobile and social networks. The Cloudmark suite of security solutions simplifies and advances the management of messaging abuse, increasing network utilization and reducing infrastructure costs. Cloudmark?s patented solutions combine Advanced Message Fingerprinting^TM technology based on innovative, highly efficient algorithms, a Global Threat Network consisting of trusted reporters across the globe, real-time, automated analysis of traffic and content patterns, along with security research expertise, to provide real-time security intelligence and filtering across carrier networks. Cloudmark solutions protect more than 850 million subscribers for the world?s largest carrier networks, including over 75 percent of all major service providers in the United States and Japan. Cloudmark?s customers include Cablevision, Comcast, Cox Communications, EarthLink, NEC Biglobe, NTT OCN, Swisscom, Tele2, Thus, and XS4ALL (KPN) as well as leading hosting providers and global social networking companies such as MySpace. Cloudmark is a privately held company headquartered in San Francisco with offices in London, Tokyo, Beijing and Hong Kong. For more information, visit http://www.cloudmark.com

Cloudmark and the Cloudmark logo are registered trademarks Cloudmark, Inc. in the United States and certain other countries. All other trademarks mentioned in this document are the property of their respective owners.