The company estimates that Internet Security 2010 runs 60 per cent faster, and uses 70 per cent less memory, than the previous version.
Other features include a new user interface, the ability to automatically diagnose and remove possible threats, and a new Exploit Shield to help prevent attacks targeting application vulnerabilities.
"F-Secure has responded with an improved overall experience including major performance gains and a great new user interface," the firm said.
"At the same time we provide even better security with innovative features like Browsing Protection. The result is a security product that sets new standards in the safe use of computers and the internet."
Reducing the installation and memory requirements of security software has become a trend within the industry. Vendors such as Trend Micro have cited customer feedback and the emergence of web services as helping to keep footprints down.