[Qihoo 360 Reports Unaudited Third Quarter 2011 Financial Results - Record Revenues of $47.5 million, up 207% Year-over-Year; - GAAP Net Income of $10.9 million, up 186% Year-over-Year - Record Non-GAAP Net Income of $19.5 million, up 306% Year-over-Year Qihoo 360 Technology Co. Ltd. BEIJING, November 16, 2011 — Third Quarter 2011 Highlights(1) · Revenues were a record $47.5 million,] [FORM 6-K 001-35109 Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza No.71 JianGuo Road, ChaoYang District Beijing 100025 People’s Republic of China (86-10) 5878-1000 Form 20-F x Form 40-F o o o QIHOO 360 TECHNOLOGY CO. LTD. Form 6-K TABLE OF CONTENTS]

[Qihoo 360 Launches Full Suite of Mobile Browsers Qihoo 360 Technology Co. Ltd. BEIJING, Sept. 20, 2011 /PRNewswire via COMTEX/ — The company launched its first mobile browser for the iPad on August 18, 2011, which is available for free download on Apple’s App Store under the name of “360 Browser (in Chinese characters) HD.” The Company also launched beta] [Qihoo 360 Technology Co. Ltd. Alex Zuoli Xu]

[Qihoo 360 Announces Change in Board of Directors Qihoo 360 Technology Co. Ltd. BEIJING, Sept. 19, 2011 /PRNewswire-Asia/ -- Ms. Chen has been a partner at CDH Venture since January 2006. From February 2001 to December 2005, she served as an assistant vice president of Walden International Investment Group. From February 2000 to January 2001, Ms. Chen served as an] [Qihoo 360 Technology Co. Ltd.]

[Qihoo 360 Reports Unaudited Second Quarter 2011 Financial Results Revenues Increase 177% Year-over-Year; Net Income Increases 411% Year-over-Year BEIJING, August 17 Qihoo 360 Technology Co. Ltd. , 2011 — 3 internet company in China as measured by active user base, today reported its unaudited financial results for the second quarter ended June 30 , 2011. Second Quarter 2011 Highlights (1)] [Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza No.71 JianGuo Road, ChaoYang District Beijing 100025 People’s Republic of China (86-10) 5878-1000 Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]

[Qihoo 360 Reports Unaudited First Quarter 2011 Financial Results BEIJING, May 24 , 2011 /PRNewswire via COMTEX/ — Qihoo 360 Technology Co. Ltd. (“Qihoo 360” or the “Company”) (NYSE: QIHU), the No. 3 internet company in China as measured by user base, today reported its unaudited financial results for the first quarter ended March 31 , 2011. First Quarter 2011] [Qihoo 360 Technology Co. Ltd. Block 1, Area D, Huitong Times Plaza No.71 JianGuo Road, ChaoYang District Beijing 100025 People’s Republic of China (86-10) 5878-1000 Form 20-F x Form 40-F o o o Qihoo 360 Technology Co. Ltd.]