Day: October 24, 2010

JPEG JFIF

What is it JPEG (Joint Photographic Experts Group) is a lossy compression method standardised by ISO. JPEG JFIF, which is what people generally mean when they refer to “JPEG”, is a file format created by the Independent JPEG Group (IJG) for the transport of single JPEG-compressed images. Status The JPEG …

Continue Reading

PNG

PNG (Portable Network Graphics) What is it PNG is an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel …

Continue Reading

Cross-browser

Cross-browser refers to the ability for a website, web application, HTML construct or client-side script to support all the web browsers. The term cross-browser is often confused with multi-browser. Multi-browser means something works with several web browsers. Cross-browser means something works with all versions of all browsers to have existed …

Continue Reading

How to Spy on Computer Use

As a security administrator, auditor or “ethical hacker,” there are times when you will be tasked to monitor a person’s computer usage, including Internet sites visited, files created and/or modified and computer accounts created and/or modified. As a head-of-household, you face many of the same challenges, especially as a parent. …

Continue Reading