PRESS RELEASE

San Francisco, CA — April 10, 2012 — Lookout Inc., the leader in mobile security, today announced a new feature to enhance Lookout’s award-winning antivirus and mobile security service to T-Mobile’s Android customers. Mobile devices are an essential part of people’s lives making it more important than ever for customers to take steps to safeguard their data and privacy, and the Lookout app serves as a lifeline for mobile devices, protecting against malware, spyware, data loss and device loss. Since launching a partnership in 2011, Lookout Mobile Security has been available as a preload on most of T-Mobile’s Android smartphones and tablets, including the new Samsung Galaxy S® Blaze™ 4G.

With Lookout, T-Mobile customers can pinpoint a missing smartphone or tablet on a Google map and use SCREAM™ Tones, a new feature that sounds a loud noise, to help identify a lost device nearby. T-Mobile customers can choose from six tones of animated sounds, including wolf howl, train whistle, euro siren, beam me up, the T-Mobile jingle, and Lookout’s original siren, to help locate a lost phone or tablet.

“Smartphones and tablets are our most personal devices and as consumers store more information on them, there’s an elevated interest to protect them,” said Torrie Dorrell, vice president of application, content and games, T-Mobile USA. “Lookout is a great fit for T-Mobile because the app is powerful yet easy to use, and it gives our customers protection across a range of mobile security threats.”

“T-Mobile is a leader in mobile communications and we’re thrilled to work together on enhancing mobile security,” said John Hering, CEO and co-founder, Lookout. “Having the Lookout app preloaded on T-Mobile devices means customers can quickly and easily access content that helps them feel safe and confident to do more with their phones.”

Available in Google Play, the Lookout app is a free download that enables people to find a missing device when it is lost or stolen, manage phone security, and easily backup precious data. From a single online destination at mylookout.com, people can manage multiple mobile devices and locate a phone or tablet on a Google map. Lookout makes automatic updates over-the-air, making data and device protection simple for users. The Lookout Premium app includes the essential security in the free Lookout app, in addition to enhanced security with Remote Lock & Wipe, Safe Browsing, and Privacy Advisor.

Lookout has more than 15 million users in 170 countries across 400 mobile networks and is continuing to add a million new users every month. The top-rated security app available, Lookout was recently awarded PC Magazine’s Editors’ Choice award and has a five-star rating from CNET. To learn more or download Lookout, please visit www.mylookout.com.

About Lookout

Lookout is a mobile security company dedicated to making the mobile experience safe for everyone. Lookout delivers award-winning protection from the growing threats facing mobile users today, including malware, phishing, privacy violations, data loss, and loss of the phone itself. Cross-platform, Lookout is designed from the ground up to provide advanced mobile protection while remaining lightweight and efficient on the phone. With 15 million users across 400 mobile networks in 170 countries, Lookout is the world leader in smartphone security. Headquartered in San Francisco, Lookout is funded by Accel Partners, Andreessen Horowitz, Index Ventures, Khosla Ventures and Trilogy Equity Partners. For more information and to download Lookout, please visit www.mylookout.com.