Philip Tellis

Insufficient input filtering is the largest cause of security issues on the web today. In this article, we look at input filtering in more depth while picking on a few real examples that we’ve seen around the web. As we’ll see, insufficient input validation can result in various kinds of code injection including XSS, and in some cases can be used to phish user credentials or spread malware.

As technologically aware humans, we communicate in a variety of ways. Face-to-face, through the grapevine, handwritten letters and post-it notes, instant messaging, SMS, telephone calls, email, discussion boards, twitter, blogs, smoke signals, morse code using signalling lights, semaphore flags and more. The groups we communicate with over these different media may not intersect, but the whole is a part of what defines us. The Stream of Collaboration is an interface to all our communication… Show more

As technologically aware humans, we communicate in a variety of ways. Face-to-face, through the grapevine, handwritten letters and post-it notes, instant messaging, SMS, telephone calls, email, discussion boards, twitter, blogs, smoke signals, morse code using signalling lights, semaphore flags and more. The groups we communicate with over these different media may not intersect, but the whole is a part of what defines us. The Stream of Collaboration is an interface to all our communication streams, providing each individual their own window to the groups they collaborate with. Show less

Web application developers today need to be skilled in a multitude of disciplines. It’s necessary to build an application that is user friendly, highly performant, accessible and secure, all while executing partially in an untrusted environment that you, the developer, have no control over. I speak, of course, about the User Agent. Most commonly seen in the form of a web browser, but in reality, one never really knows what’s on the other end of the HTTP connection.

Over the course of one week, we gathered data about the network connections used by visitors to the YUI blog. In particular, we collected information about bandwidth, network latency, geo location and ISP information. No personally identifiable information was collected. This report presents an analysis of the data and insights observed from it.

Webster defines collaboration as "working jointly with others or together especially in an intellectual endeavour".

In an increasingly online world, it is necessary to have tools that allow online teams to work with each other in a productive manner. When dealing with Online Learning as well, students need to be able to work together and with a teacher to extract the most out of their course. A suitable replacement for regular student-teacher contact sessions and group discussions needs… Show more

Webster defines collaboration as "working jointly with others or together especially in an intellectual endeavour".

In an increasingly online world, it is necessary to have tools that allow online teams to work with each other in a productive manner. When dealing with Online Learning as well, students need to be able to work together and with a teacher to extract the most out of their course. A suitable replacement for regular student-teacher contact sessions and group discussions needs to be employed.

In this report, we shall have a look at some existing tools for collaboration, at the various features supported, standards, if any, and what the future holds in store for users of collaborative technology. Show less

You connect to your ISP to send and receive mail. You have an email account with another email service provider (not your ISP). You want outgoing mails to appear to come from your other account, but you want to use your ISP's mail gateway to send the mail.

You must use your ISP's mail gateway, because you are not permanently connected to the Internet. Your ISP does not allow relay - i.e. only mail coming from or going to an email address in your ISP's domain will be allowed through… Show more

You connect to your ISP to send and receive mail. You have an email account with another email service provider (not your ISP). You want outgoing mails to appear to come from your other account, but you want to use your ISP's mail gateway to send the mail.

You must use your ISP's mail gateway, because you are not permanently connected to the Internet. Your ISP does not allow relay - i.e. only mail coming from or going to an email address in your ISP's domain will be allowed through their gateway.

You also want that mails sent out from the system do not have any local addresses in the header (To:, Cc:, From: lines), while mails between two local users always have the local addresses - i.e. you want rewrite to work only on mails leaving the system.

Finally, you want that local mails are delivered immediately, while remote mails are stored in a queue until you are connected to the Internet. Show less

The Yahoo Messenger Protocol is an application layer protocol running most of the time over TCP, but in some cases over HTTP as well. Throughout this document, we will speak about the YMSG packets, after stripping out any other protocol data, but will mention this other data if it is of
relevance.

The Internet and the World Wide Web are becoming popular as media for delivering instruction, resulting in the concept of asynchronous teaching and learning. In order to make this model of instruction successful, one must consider all aspects of instruction delivery, to ensure that students find this new medium, comfortable and effective. Although there are a plethora of instruction delivery tools available worldwide, few of them have put in significant effort to look at the real issues… Show more

The Internet and the World Wide Web are becoming popular as media for delivering instruction, resulting in the concept of asynchronous teaching and learning. In order to make this model of instruction successful, one must consider all aspects of instruction delivery, to ensure that students find this new medium, comfortable and effective. Although there are a plethora of instruction delivery tools available worldwide, few of them have put in significant effort to look at the real issues pertaining to instruction delivery. In this paper, we discuss "Vasistha", an Instruction Delivery Framework for online learning, which we are developing at NCST. Vasistha provides a framework to organise course content for online courses. It has been designed keeping in mind the core issues pertinent to Instruction Delivery. Show less