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'''Cloudmark, Inc''' is a [[privately held company]], [[San Francisco]]-based, providing protection against spam, viruses, phishing, and similar threats that affect [[email]].

Cloudmark claims to protect about one billion subscribers for the world's largest carrier networks, including over 75 percent of all major service providers in the United States and Japan.<ref name="Patrick Hoge">{{Cite web |url=http://sanfrancisco.bizjournals.com/sanfrancisco/stories/2010/02/15/daily33.html?jst=cn_cn_lk |title=Cloudmark to buy Bizanga|author= Patrick Hoge |date=2010-02-17 |publisher=[[San Francisco Business Times]] |accessdate=2010-05-28 }}</ref>  Its client reference list includes: [[Cablevision]], [[Comcast]], [[Cox Communications]], [[EarthLink]], [[Rackspace]], Reliance Connects, [[Swisscom]], [[TDC A/S|TDC]], [[Orange (telecommunications)|Orange]], [[XS4ALL]] (KPN), as well as social networkings companies [[MySpace]] <ref>{{Cite web |url=http://techcrunch.com/2010/03/03/cloudmark-funding/ |title=Messaging Security Company Cloudmark Raises $23 Million From Nokia, Others |author= Robin Wauters |date=2010-03-03 |publisher=[[TechCrunch]] |accessdate=2010-05-30 }}</ref> and probably [[Facebook]].<ref>{{Cite web |url=http://www.businessweek.com/magazine/content/10_48/b4205050135485.htm |title=Dear E-Mail: Die Already. Love, Facebook |author= Brad Stone |date=2010-11-18 |publisher=[[Bloomberg Businessweek]] |accessdate=2010-02-05 }}</ref>

==Company activity==
Cloudmark was founded in September 2001 by [[Vipul Ved Prakash]] and [[Jordan Ritter]].<ref>{{Cite web |url=http://www.wired.com/wired/archive/10.09/start_pr.html |title=Spam-Haters of the World Unite! |author=[[Chris Anderson (writer)]] |date=2002-09-01 |publisher=[[Wired (magazine)]] |accessdate=2009-10-25 }}</ref><ref>{{Cite web |url=http://www.usenix.org/publications/login/2005-04/pdfs/haskins0504.pdf |title=Interview with Vipul Ved Prakash |author=Robert Haskins |date=2005-03-11 |publisher=[[USENIX]] |work=ISPadmin |accessdate=2009-10-25 }}</ref>

Cloudmark sits on the board of directors of the [[Messaging Anti-Abuse Working Group]], and the steering committee of the [[Anti-Phishing Working Group]],<ref>{{Cite web |url=http://www.openpr.com/news/9744/direct-Cloudmark-Stops-Viruses-Before-They-re-Even-Named.html |title=Cloudmark Stops Viruses Before They're Even Named |author=Brenda Ropoulos  |date=2006-06-26 |work=Press release from Cloudmark, Inc |publisher=OpenPR |accessdate=2009-10-25 }}</ref> it also works with [[Sendmail]],<ref>{{Cite web |url=http://news.cnet.com/Sendmail,-Cloudmark-team-against-spam/2100-1032_3-5101065.html |title=Sendmail, Cloudmark team against spam |author=Stefanie Olsen  |date=2003-11-02 |publisher=[[CNET Networks|CNET]] |accessdate=2009-10-25 }}</ref> Habeas,<ref>{{Cite web |url=http://www.mobilemarketer.com/cms/news/email/560.html |title=Habeas, Cloudmark partner for certified mobile email delivery |author=Mickey Alam Khan |date=2008-02-20 |publisher=Mobile Marketer |accessdate=2009-10-25 }}</ref> [[IBM]],<ref>{{Cite web |url=http://www-03.ibm.com/systems/industries/telecom/partners/cloudmark.html |title=Cloudmark and IBM BladeCenter |author=Keith R Hutchinson |date=2009-05-25 |publisher=IBM Corporation |accessdate=2009-10-25 }}</ref> ReturnPath and [[Yahoo!]].<ref>{{Cite web |url=http://directmag.com/email/news/yahoo_cloudmark_0129/ |title=Yahoo!, Cloudmark Implement Return Path Certification Scheme |author=Ken Magill |date=2008-01-29 |publisher=DIRECT |accessdate=2009-10-25 }}</ref>

In 2005, Cloudmark franchised some companies worldwide to deploy its anti-spam and anti-phishing products, among which [[SynapseIndia]] targeted 50,000 mailboxes in one quarter.<ref>[http://www.ciol.com/ciol/news/97565/synapse-targets-mailboxes-cloudmark-products Franchisee Hired]</ref>

In February 2010, Cloudmark acquired Bizanga Ltd., the developer of a message processing platform.<ref name="Patrick Hoge"/>

==Process Overview==
Cloudmark claims to be "a comprehensive global sender monitoring and analysis system that delivers timely and accurate reputation on good, bad, and suspect senders."  Cloudmark provides an extensive overview of the approach it uses to make various determinations of "reputation" quality. Spam filtering is collaborative. Cloudmark users practically "vote" what’s spam and what not. The method is known as ''[[Vipul's Razor]]''.

However, Cloudmark does not disclose which specific criteria were applied in its determination of “reputation” quality related to a discrete email sender.  Nor does Cloudmark make available a discrete list of email senders which are subject to an adverse reputation determination.  As a result, the administrators of a Cloudmark blocked email server have no opportunity to determine whether or not Cloudmark may have unjustly assigned a less than acceptable reputation to the email server.  Many other providers of reputation assessments do have this feature.  

Once Cloudmark assigns an adverse determination to a sending email server, the entire stream of email sent from it to a server get blocked from delivery, if the receiving server applies Cloudmark's reputation assessment in its email acceptance rules.  The recipient sends a generic message back to the sending server for each rejected message indicating that a transmission to a Cloudmark-designated recipient was refused.  The message doesnot disclose the specific reason for the rejection.  The intended recipient is not notified that email from the server is being uniformly blocked. This operation is typical of reputation-based services.

Cloudmark does provide a link to an on-line form to potentially unblock a mail sender (“reset”), subject to Cloudmark's review process and approval.  However, it can take up to 48 hours for the block to be removed.spear phishing and similar threats that affect email and mobile messaging threats.

Cloudmark protects more one billion subscribers for the world's largest carrier networks and ISPs worldwide, safeguarding 12 percent of email accounts and 20% of mobile accounts around the globe. Its clients include more than 100 Tier 1 carriers and ISPs around the globe, including Comcast, GoDaddy, 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. It also provides messaging security solutions for 70,000 enterprises.

==Company activity==
Cloudmark was founded in September 2001 by [[Vipul Ved Prakash]] and [[Jordan Ritter]].<ref>{{Cite web |url=http://www.wired.com/wired/archive/10.09/start_pr.html |title=Spam-Haters of the World Unite! |author=[[Chris Anderson (writer)]] |date=2002-09-01 |publisher=[[Wired (magazine)]] |accessdate=2009-10-25 }}</ref><ref>{{Cite web |url=http://www.usenix.org/publications/login/2005-04/pdfs/haskins0504.pdf |title=Interview with Vipul Ved Prakash |author=Robert Haskins |date=2005-03-11 |publisher=[[USENIX]] |work=ISPadmin |accessdate=2009-10-25 }}</ref> The company was initially built on Prakash's open source anti-spam solution Vipul's Razor.

The company 

Cloudmark sits on the board of directors of the [[Messaging Anti-Abuse Working Group]] and the steering committee of the [[Anti-Phishing Working Group]],<ref>{{Cite web |url=http://www.openpr.com/news/9744/direct-Cloudmark-Stops-Viruses-Before-They-re-Even-Named.html |title=Cloudmark Stops Viruses Before They're Even Named |author=Brenda Ropoulos  |date=2006-06-26 |work=Press release from Cloudmark, Inc |publisher=OpenPR |accessdate=2009-10-25 }}</ref> 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, which was fined XXXX.

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

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.

Product History

Cloudmark's approach was the first to utilize peer to peer collaborative filtering in anti-spam with the debut of its first product SpamNet, released in 2001. 

The product name was later changed to DesktopOne. While consumers represented its first market, by 2002, Cloudmark's anti-spam product line had branched out into the enterprise market. As of 2004, its SpamFighter community had grown to one million contributors.

in 2004, Cloudmark released Cloudmark Authority, an enterprise gateway anti-spam system, and SafetyBar, a consumer facing anti-phishing solution adopted by PayPal to protect consumers in online financial transactions. SafetyBar quickly grew to more than one million users in 150 countries in its first year. 

In 2005, the company launched its first products for ISPs.

In 2006, the company launched Cloudmark Authority Anti-Virus, providing zero-hour protection against message-borne viruses. The company's Cloudmark Authority product grew to become the leading carrier-grade messaging security solution, serving 7 out of the top 12 ISPs in North America and 8 out of the top 10 ISPs in Japan. Its solutions were frequently adopted on the basis of superior efficiency, enabling clients to run Cloudmark solutions with 1/10th as many servers as competitors' solutions.

In 2007, the company introduced its first anti-spam product for mobile carriers, Cloudmark Authority for Mobile, along with Cloudmark Authority for SpamAssassin. In the same year, Earthlink selected Cloudmark to protect its 5 million users from spam, bringing the total number of email inboxes Cloudmark protected to 250 million email accounts.

In 2009, Cloudmark turned its attention to protecting social media users; the giant social media network MySpace became a client as did Comcast, which added another 25 million subscribers. Within a year the Cloudmark Global Threat Network grew to top 1 billion user accounts.

After acquiring Bizanga in 2010, in 2011 Cloudmark joined forces with the GSMA, the largest mobile carrier organization in the world. to launch a global spam reporting service, the GSMA SRS, which was used by carriers around the world.

In 2014, the company launched Cloudmark Security Platform for DNS, enabling clients to detect malicious messaging in DNS networks, infrastructure and traffic.

In 2016, as email threats become more targeted, Cloudmark launched an anti-spear phishing solution, Cloudmark Trident, to detect highly targeted attacks, including text only attacks that carry no malicious link or attachment. The product won a CRN Top 100 Security solutions award.

In addition to its solutions, Cloudmark also markets a data feed from its Cloudmark Global Threat Network, which it licenses to a number of vendors, including Symantec. The Cloudmark Global Threat Network encompasses 1 billion endpoints worldwide, making it the single largest commercially available source of global threat intelligence in the marketplace. The network detects more than 50,000 unique, malicious domains daily.⏎
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==See also==
*[[Vipul's Razor]]
*[[Certified e-mail]]

==References==
{{Reflist}}

== External links ==
* [https://www.cloudmark.com/ Cloudmark website]

[[Category:Spam filtering]]