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Danger

Other B2B Software · Palo Alto, United States · Founded 1999

The software platform and hardware behind t-mobile’s sidekick phone MoreLess

Danger, Inc. was a company founded in early 2000 by Andy Rubin, Matt Hershenson, and Joe Britt. The founders, who had previously worked at companies like Apple and WebTV, networked and formed relationships before establishing the company. Their collective experience in hardware and software engineering was foundational to Danger's product development.

The company's core offering was a holistic mobile platform that included hardware design, the Danger OS operating system, and back-end services. This integrated approach provided services like email, instant messaging, web browsing, and a catalog of downloadable applications. Danger's business model focused on selling these services to wireless carriers, enabling them to offer the physical devices at a lower cost and generate revenue from ongoing service fees. Their primary client was T-Mobile, with whom they partnered closely to launch their flagship product.

Danger's most notable product was the Hiptop, famously marketed by T-Mobile as the Sidekick. Unveiled in 2001 and launched the following year, the device was recognized for its distinctive design, where the screen would swivel or flip to reveal a full QWERTY keyboard. This design made it particularly popular among younger, socially-inclined consumers for messaging and internet use. The Sidekick was one of the first smartphones to offer features like multitasking and a flat-rate data plan.

The company went through several product iterations, releasing updated versions of the Sidekick with manufacturers like Sharp and Motorola, which included improved cameras and 3G support. In 2002, Apple co-founder Steve Wozniak joined Danger's board of directors. A significant milestone occurred in February 2008 when Microsoft announced its acquisition of Danger for a reported $500 million. The acquisition was completed in April 2008, with co-founders Matt Hershenson and Joe Britt joining Microsoft's Premium Mobile Experiences team. Andy Rubin had already left Danger in 2003 to found Android Inc., which was later acquired by Google. The Danger data services for the Sidekick were ultimately discontinued on May 31, 2011.

Keywords: mobile platform, Sidekick, Hiptop, wireless data services, smartphone, Danger OS, QWERTY keyboard, mobile messaging, Microsoft acquisition, Andy Rubin

Company overview

Danger company information

The essential company record, classifications and operating signals in one place.

Status
Acquired
Founded
1999
Headquarters
Palo Alto, United States
Employees
64
Open positions
None listed
Dealroom signal
62.3
business modelSaaSsectorHard TechindustryEnterprise Softwareclient focusb2btechnologyHardware

Valuation & funding

Danger funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONOther financing Feb 2008 $500M $500M Microsoft
SERIES EOther financing Nov 2006 $10M $41M Undisclosed
SERIES DOther financing Jul 2004 $37M $148M Redpoint · IVP · Softbank Capital · Adams Street Partners
SERIES DOther financing Feb 2003 $35M $140M Softbank Capital
SERIES COther financing Jun 2002 Undisclosed
SERIES BOther financing Oct 2001 Redpoint
SERIES AOther financing May 2001 Mobius Venture Capital · Amidzad Partners
SERIES AOther financing Sep 2000 Mobius Venture Capital · Amidzad Partners
Showing 8 recorded eventsUnlock the complete deal history →

Growth signals

Danger website traffic

Latest recorded traffic for Danger is 390 monthly website visits, up 254.5% over the last three months. Danger's team declined 22% over the past year.

Latest monthly visits390 3-month web change+254.5% 1-year team growth-22%
Monthly website visits66 observations · Oct 2017–Aug 2025
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Danger compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

CompanyHeadquartersStatusEmployeesTotal fundingValuation
AHAD Information TechnologyPure-play Cybersecurity company known for its offensive security and intelligence capabilities while serving as an enabler providing strategic advisory, consulting, design, implementation and comprehensive security assessments to help organizations identify critical risks Dubai, United Arab Emirates Operational 47 $91K $5M
AlwaysAIEnterprise computer vision platform for edge devices Solana Beach, United States Operational
Raven TelemetryCollaborating with leading manufacturers, Raven offers changeover improvement programs, HMIs, gamification, and production monitoring software for boosting awareness and productivity on the shop floor Ottawa, Canada Operational
Kiwi Information Technology,Ltd.We believe software is driving the world, and we stick to one simple goal of building a world-class technology enterprise Dongcheng District, China Operational
Hefei City Cloud Data CenterHangzhou-based company specializing in cloud computing and big data technologies Hangzhou, China Operational
AmeriaAMERIA - PIONEERING TOMORROW | Connected Experience Heidelberg, Germany Operational
IndoorwayInternet of Things (IoT) technology company that provides Industry 4.0 companies with data and insights of moving assets based on its real-time indoor positioning system Warsaw, Poland Operational
IMeshup3D collaboration for game development teams Warsaw, Poland Operational
Showing 8 of the closest matchesCompare every metric →

Talent graph

Danger's talent

Book a demo to see the people
Team profiled 31 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

7 investors on Danger's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 3 investors entered at this stage
Mobius Venture Capital
Amidzad Partners
Redpoint
Series B+ 3 investors entered at this stage
Other known 1 additional known investor

Global footprint

Where Danger has talent and traffic

Workforce by country
2 countries with
team presence
🇺🇸 United States80%
🇷🇴 Romania20%
2 countries shown

In the news

Latest news about Danger

Recent press, funding announcements, and product moves mentioning Danger — open to read from the original sources.

See all news

Market sentiment

What the market is saying about Danger

An AI-synthesized read of the highest-engagement posts about Danger on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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