uk 1982 headquarters theale berkshire uk number of locations uk usa germany japan australia area served worldwide products secure email gateway secure web gateway secure file gateway secure icap gateway secure exchange gateway critical information protection server & agent argon for email services product support security consulting revenue 20.8 m 2012 1 owner lyceum capital number of employees 170 slogan adaptive cyber protection website http www.clearswift.com clearswift is an information security company based in the uk . it provides cyber security solutions to protect business s data from internal and external threats . contents 1 history 2 research & development 3 external links 4 references history edit clearswift was originally founded as net tel in 1982 . 2 3 one of the co founders john horton had previously worked at gec and acorn computers . 4 in 1988 net tel launched route400 the world s first mail client for ms dos using the x. 400 protocol . it was later ported to other platforms . 5 6 1998 net tel switched its main business to content filtering as the popularity of the microsoft exchange client took away the mail client market . 6 2001 net tel was rebranded as clearswift after a round of venture capital fundraising . 7 2002 clearswift acquired content technologies from baltimore technologies along with the mimesweeper brand . 8 clearswift extended the mimesweeper line to include web and instant messaging filtering . these were marketed as protecting against the leakage of confidential company information on social networking sites clearswift argues that instead of banning web 2.0 sites and services entirely businesses can actually gain a competitive advantage by making use of them provided their use is monitored . 9 10 2003 the company received 6.07 million from its shareholders including venture capital funds managed by amadeus capital partners ba capital partners cazenove private equity and kennet partners . 11 also it was reported that clearswift were the providers of a new email filtering system at the house of commons responsible for blocking welsh language emails as inappropriate content and preventing mps receiving copies of a sexual offences bill . 12 clearswift would not confirm that the house of commons was a customer citing customer confidentiality reasons . 7 april 2005 clearswift began to market an smtp appliance email gateway based upon the technology . 13 january 2008 failure to renew a domain name caused loss of email services to 5 % of clearswift s customers . 14 dec 2009 clearswift sold the deep secure bastion and flashpoint products in to a spin off company deep secure . 15 november 2011 clearswift was sold to lyceum capital . 16 august 2012 clearswift acquired jedda systems pty ltd. 17 in order to provide endpoint dlp in conjunction with its gateway based network dlp and provide growth . 18 february 2013 clearswift acquired microdasys in order to strengthen its web product line . 19 research & development edit clearswift has its main engineering office based in arlington business park 20 theale uk . a smaller engineering office is in adelaide australia which was part of the jedda acquisition . 21 external links edit http www.clearswift.com references edit annual report net tel computer systems ltd news net tel computer systems ltd company profile the security of mutual support net tel computer systems ltd products messaging clients a b ft.com services & tools search a b lyceum continues it sector interest fortune favours bold clearswift information age don t ban social networking sites bbc radio 4 in business clearswift secures 6.07 million in funding ; email management leader moves into significant stage of growth http www.theregister.co.uk 2003 02 05 plaid up in arms as clearswift news & events domain name gaffe deep secure lyceum acquires clearswift clearswift extends delivery data leak prevention strategy cybersecurity ventures top 500 clearswift strengthens commitment to safeguarding critical information clearswift contact us . retrieved 2016 09 03 . clearswift jedda acquisition press release retrieved from https en.wikipedia.org w index.php title clearswift & oldid 737524339 categories companies established in 1982companies based in berkshireprivately held companies of the united kingdom1982 establishments in the united kingdom navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 3 september 2016 at 11 25 . text is available under the creative commons attribution sharealike license ; 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