| 2010 | May | LAC moved its headquarters to Chiyoda-ku, Tokyo, Japan. |
| 2009 | December | LAC established a subsidiary, LAC CHINA CORPORATION Co., Ltd., in Shanghai, China, to expand into Chinese market in the field of network security services. |
| 2009 | October | LAC established Cyber Emergency Center, which specializes in responding to cyber emergency incidents. |
| 2009 | July | LAC concluded a general agent contract in Japan with (ISC)², Inc. (Florida, U.S.A.), not-for-profit organization certifying information security professionals. |
| 2009 | April | IT Professional Group Co., Ltd. (IT Professional Group Japan) was made LAC's subsidiary to support growing IT infrastructures through development of professional human resources, for example, by the achievement of globally-recognized security certifications such as CISSP. |
| 2009 | February | LAC started offering Web Application Security Evaluation (Service Plan: Focused) through Amazon.co.jp. It is LAC's first service which became available on Amazon.co.jp. |
| 2009 | January | LAC launched Web Application Security Evaluation (Service Plan: Focused), which specially focuses on prevalent Web application vulnerabilities (SQL injection and cross-site scripting) and is available at a lower price. |
| 2009 | January | LAC launched MSS All-In-One Service, which is to outsource security monitoring by a set of IDS/IPS security appliance(s) and security monitoring service with a monthly fee. |
| 2008 | October | LAC launched CIO Advisory Services to solve organizations' challenges such as IT governance. |
| 2008 | July | LAC's branch in South Korea became LAC's subsidiary, which is incorporated as Cyber Security LAC Co., Ltd. |
| 2008 | June | LAC rolled out IT Implementation Consulting Services, Integrated Log Management System Deployment and Operations Support Services, and Application Security Implementation Services, which provide security countermeasures against internal threats. |
| 2008 | April | LAC became a dedicated security company by consolidating its systems integration business into A&I System Co., Ltd., a group company of LAC, through restructuring of businesses across the group companies. |
| 2007 | November | LAC entered into a partnership with KDDI CORPORATION in the security solutions. |
| 2007 | October | LAC merged with A&I System Co., Ltd. and established a holdings company, LAC Holdings, Inc. (JASDAQ: 3857) |
| 2007 | September | LAC opened a branch (Nagoya Office) in Nagoya, Japan. |
| 2007 | April | LAC concluded a share transfer contract with A&I System Co., Ltd. |
| 2006 | August | LAC announced UTM24+, a Cisco certified new service, which represents the next generation of security, for small and medium-sized enterprises. |
| 2006 | February | LAC launched Security Management Service (SMS) that meets the human resource needs of enterprises. |
| 2005 | December | LAC launched Managed Security Services (MSS), which are provided by LAC's Japan Security Operation Center (JSOC) as a Cisco certified security operations center. |
| 2005 | October | LAC was granted the METI Minister Award for FY 2005 Informatization Month for contributions to informatization promotion. (METI: Ministry of Economy, Trade and Industry) |
| 2005 | April | LAC launched Personal Information Emergency, a new service to provide emergency responses for security incidents involving personal information leakage. |
| 2005 | February | LAC entered into capital and business alliances with A&I System Co., Ltd. in the information security services business. |
| 2005 | February | LAC contributed for establishment of a private organization, DataBase Security Consortium (DBSC), in cooperation with leading database companies in Japan, including Oracle Corporation Japan, for information sharing, community outreach and awareness about database security. LAC's Database Security Laboratory (DBSL) is in charge of managing the front office operations. |
| 2004 | December | LAC established Database Security Laboratory (DBSL). DBSL started research and development in the database security. |
| 2004 | October | LAC's Japan Security Operation Center (JSOC) completed the periodical surveillance and re-assessment process under the Information Security Management Systems (ISMS) Conformity Assessment Scheme and the process for the transition of the certification to Ver. 2.0. |
| 2004 | September | LAC entered into a partnership with Oracle Corporation Japan in the database security. |
| 2003 | July | LAC entered into a partnership with NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION and Sumitomo Corporation in the field of advanced information security services. |
| 2003 | May | LAC's Japan Security Operation Center (JSOC) joined Forum of Incident Response and Security Teams (FIRST). |
| 2002 | October | LAC's Japan Security Operation Center (JSOC) achieved Information Security Management Systems (ISMS) certification. |
| 2002 | July | LAC entered into a technology partnership with Microsoft Corporation in providing security solutions. |
| 2002 | June | LAC entered into a partnership with Cisco Systems Japan in the network security business. |
| 2002 | April | LAC was listed on the JASDAQ (Company Code: 4359). |
| 2002 | March | LAC concluded an enterprise security partnership contract with Symantec Corporation. |
| 2002 | February | LAC established Japan Security Operation Center (JSOC), in Tranomon, Minato-ku, Tokyo, Japan, with security administration functions enhanced by replacing existing systems and facilities. |
| 2001 | May | LAC launched SecureNet Service DataBase (SNSDB), a database of the latest information on security vulnerabilities. (SNSDB is a registered trademark of LAC.) |
| 2001 | May | LAC conducted capital increase through third-party allocation of new shares to Mitsubishi Corporation, to expand its security business. |
| 2001 | January | LAC established Computer Security Laboratory (CSL) for research and development in the security technologies. |
| 2000 | June | LAC supported a G8 Summit, Kyushu-Okinawa Summit, in providing security monitoring and response services against unauthorized access to the official Web site. |
| 2000 | May | LAC established its Security Operations Center (SOC) to enhance and strengthen its security monitoring and incident response businesses to protect against unauthorized access. |
| 2000 | February | LAC entered into a partnership with Net One Systems Co., Ltd. in providing SecureNet Service (SNS). LAC launched a 24/7 emergency response service for security measures against unauthorized access. |
| 1998 | April | LAC launched a unified security service, SecureNet Service (SNS). |
| 1995 | April | LAC entered into network security business, and began research on the techniques to protect against unauthorized access and launched security consulting services on security measures. |
| 1986 | September | Little eArth Corporation Co., Ltd. (LAC) was founded in Minato-ku, Shimbashi, Tokyo, Japan, for the purpose of providing computer system development services. (Founder: Gen Mishiba, Capital: 20 million yen) |
