Cloud physics vertically developed clouds, the cumulonimbus type is the tallest and can virtually span the entire troposphere from a few hundred metres above the ground up to the tropopause. It is the cloud responsible for thunderstorms. Some cirriform clouds can form at very high to extreme levels above the troposphere, mostly above the polar regions of Earth. Polar stratospheric clouds clouds are seen but rarely in winter at altitudes of 18 to 30 kilometers, while in summer, noctilucent clouds occasionally form at high latitudes at an altitude range of 76 to 85 kilometers. Homospheric types determined by cross-classification of forms and
Panda Cloud Antivirus Cloud Antivirus relies on its "Collective Intelligence" and the cloud for up-to-date information. It normally uses an Internet connection to access up-to-date information; if the Internet cannot be accessed, it will use a local cache of "the most common threats in circulation". An April 2009 review found Panda Cloud Antivirus 1.0 to be clean, fast, simple, easy to use, and with good detection rates. The same review scored Panda 100.00% in malware detection and 100.0% in malicious URL detection. Its overall score was 100%, a strong protection factor considering it is software. When version 1.0 was released on November 10,