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Cloudmark, Inc is a privately held company, San Francisco-based, providing protection against spam, viruses, phishing and spear phishing, threats that affect email and mobile messaging.

The company protects more than one billion subscribers for the world's largest carrier networks and ISPs worldwide, safeguarding 12 percent of email accounts and 20 percent of mobile accounts around the globe.

In addition to its San Francisco headquarters, it has offices in London, Paris and Tokyo and an international salesforce spanning additional countries.

On December 14, 2016, Cloudmark announced shutdown of DesktopOne after December 1, 2017.[1]

Company Activity[edit]

Cloudmark was founded in September 2001 by Vipul Ved Prakash and Jordan Ritter.[2][3] The company was initially built on Prakash's open source anti-spam solution Vipul's Razor.

Today Cloudmark's clients include more than 100 Tier 1 carriers and ISPs around the globe, including Comcast, GoDaddy, Rackspace, Verizon, Sprint, Cox and Time Warner in the U.S. International accounts include O2, EE Limited and Vodafone in the UK, Swisscom. Idea, RIL, Tata, and Aircel in India, Zain Nigeria in Africa, VimpelCom in Russia. Zain Saudi Arabia and South American carriers VIVO, TIM, OI and Telecom Personal. Cloudmark also provides messaging security solutions for 70,000 enterprises.

The Company[edit]

Cloudmark sits on the board of directors of the Messaging Anti-Abuse Working Group and the steering committee of the Anti-Phishing Working Group,[4] It also participates in industry collaborations with the Facebook Threat Exchange and the London Action Plan.

In February 2010, Cloudmark acquired Bizanga Ltd., the developer of a message processing platform.

RSA named Cloudmark one of the Top 10 Security Companies to Watch in 2013.

Long a foe of spammers, in 2015, the company helped the FTC stop an affiliate spam company promoting diet pills, Sale Slash; in 2016, the FTC fined Sale Slash $43 million under the CAN-SPAM Act.

Cloudmark's Director of Engineering Angela Knox was named One of the Top Five Women in Security in 2015, by CBR magazine.

Cloudmark publishes a quarterly threat report from its research team, sharing findings from the Cloudmark Global Threat Network, which encompasses 1 billion email accounts from around the globe.

See also[edit]


  1. Cloudmark DesktopOne is Being Discontinued
  2. Chris Anderson (writer) (2002-09-01). "Spam-Haters of the World Unite!". Wired. Retrieved 2009-10-25.
  3. Robert Haskins (2005-03-11). "Interview with Vipul Ved Prakash" (PDF). ISPadmin. USENIX. Retrieved 2009-10-25.
  4. Brenda Ropoulos (2006-06-26). "Cloudmark Stops Viruses Before They're Even Named". Press release from Cloudmark, Inc. OpenPR. Retrieved 2009-10-25.

External links[edit]

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