PRESS RELEASE

San Francisco, CA - November 9, 2011 - Lookout Mobile Security, the leader in mobile security, today announced its international expansion starting with Australia, Canada and the United Kingdom, where it will be delivering a product experience adapted for those markets. As part of Lookout's growth abroad, the company is announcing its relationship with mobile operator Telstra, Australia's largest telecommunications company. With more than 12 million users, Lookout plays an instrumental role in protecting mobile devices from malware and spyware, phishing scams, data loss and loss of the device itself.

International Expansion Globally, people are spending more time on smartphones and tablets than computers, making it more important than ever that people take the steps to protect their devices. By 2015, Gartner estimates tablet sales will total near 326 million , and smartphone sales will reach one billion . As mobile devices become more prevalent worldwide, attackers will increasingly target them regardless of location, making mobile security an issue faced in every country. In fact, in the last four months Lookout found mobile malware instances have more than doubled, reaching nearly 1000 infected apps.

"Mobile threats don't discriminate based on where you are. They tend to be global, affecting people around the world," said Lookout CEO and co-founder, John Hering. "We are providing a simple way for people to protect their most personal devices. Australia, Canada and the UK will be the first of many countries where Lookout will deliver an adapted experience."

Telstra Partnership Lookout provides Telstra's customers with a simple way to protect themselves against mobile threats and to keep the important information stored on their mobile devices safe. Telstra customers can easily download Lookout from the Telstra section in the Android Market.

"As Telstra customers increasingly rely on their smartphones and tablets, we want to ensure that security options are in place to ensure the safest possible experience for our customers," said Freddie Jansen Van Nieuwenhuizen at Telstra. "We've chosen Lookout Mobile Security to provide a simple application our customers can download to their smartphone or tablet that helps protect them against malware-infected apps, privacy violations and data loss."

About Lookout's Mobile Threat Network The Lookout Mobile Security app is powered by Lookout's Mobile Threat Network, a cloud-based network which constantly analyzes global threat data to identify and quickly block new threats with over-the-air app updates. Threat detection that would have taken days now happens in minutes, effectively protecting users before they even know a threat exists. - Lookout's Mobile Threat Network scans billions of apps per month and is the largest database of smartphone applications available. - Lookout blocks thousands of malicious links daily; Lookout has seen a doubling of malicious links blocked month over month as more people protect their phones. - Lookout currently backs up 6.5 billion contacts and finds 5 phones every minute.

Lookout has also extended the protection available to mobile devices to any app store or download site through the newly released Lookout API. Lookout is a free app available to download from the Android Market and App Store.

About Lookout Mobile Security 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 12 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 the application, please visit www.mylookout.com.