1. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Rapid Workspace Secure Collaboration Rapid & Dynamic Networks E-mail Ease of Use

2. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Market Secure Collaboration $2.4 B* by 2004 Collaboration & Online Communication $10 B - $14 B Information Security (Worldwide) $21 B by 2004 E-Mail Users (Worldwide) 260,000,000 by 2004 Federal, State, & Local IT $96 B with 6% CAGR Fortune 1000 Pharmaceutical R&D IT $300 M Sensitive Research and Intellectual Property * Multimedia Telecommunications Market Review & Forecast: 219, February 13, 2001

3. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Remote Ops Field Crisis Response Secure, Dynamic, and Rapidly Formed Main Ops

4. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Landscape NonePasswordEncrypted Transfer Encrypted Storage Strong Authentication & Non-Repudiation ++ Platform Application Enterprise Workflow Target Market Application + Security Focus E-mail Rapid Workspace

5. Whirlwind Networks, Inc. October 2001 (650) 560-0131 1 1 E-Mail Communication not collaboration 3 2 2

6. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Rapid Workspace View Connections

7. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Plan: Start-up Phase Direct SalesWeb download, Enterprise, Government cycles Price$1000 per license, 20% maintenance (non ASP) Marketing & Sales41 people by year 4 Engineering24 people by year 4 Time to MarketVersion 1 within 9 months

8. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Plan: Seed Phase Resources  $600K seed funding  $60K / mo burn rate  4 – 5 people Goals  VP, Sales/Mkt/Biz Dev  Version 1  Customer contract

9. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Team Keith V. Lucas President & CEO Erik Cassel VP, Engineering Jeff Holt Director, Operations Charlie Minter Government Sales (contractor) Mario Rosati WSGR Dave Baszucki Founder & CEO, Knowledge Revolution Pete Goettner Founder & Chairman, DigitalThink Kevin Surace Founder & CEO, Perfect Commerce (B) (A)

10. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Questions

11. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Unique Proposition Strongest security Intellectual property management E-mail capture E-mail and data encapsulation Time-based project browsing Encrypted searches

12. Whirlwind Networks, Inc. October 2001 (650) 560-0131 SAM Calculation SAM estimated at $2.4 B  Groupware market size *  ~ 7% of the collaboration and security markets  ~ 2.5% of federal, state, and local IT budgets  ~ 1.5% of all e-mail users ( $50/user/mo) * Multimedia Telecommunications Market Review & Forecast: 219, February 13, 2001

13. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Income Statement

14. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Income Plot

15. Whirlwind Networks, Inc. October 2001 (650) 560-0131 Cash Flow Plot