YDN Tuesdays are a way to meet and hear technical presentations from Yahoo experts for free. They will be held on the first Tuesday of every month throughout 2009. For the full listing of upcoming YDN events, click here.

The Yahoo! Developer Network offers Web Services and APIs that make it easy for developers to build applications and mashups. Yahoo! APIs let developers tap into Yahoo!'s world-class data and infrastructure to help power their businesses and integrate data sources in new ways, making the web a more useful and interesting place for everyone.

In this YDN Tuesday, Jose will be presenting a series of demos on how to exploit and prevent the most popular security flaws in web applications, such as SQL and blind SQL Injections, Cross Site Scripting, file uploads, file handling functions, global variables and, favorite of them all, programmers ingenuity!

	Re-writing Java classes in Scala - and m Colin Howe : 8th Feb 2010
	Using Cucumber for BDD and Agile accepta Gojko Adzic : 4th Feb 2010
	Rob Nicholson: Global Technology Outlook Rob Nicholson : 27th Jan 2010
	Dragonfly Mark Evans : 13th Jan 2010
	Redcar Daniel Lucraft : 13th Jan 2010
	Waking up to the New Economics of IT Emma McGrattan : 15th Dec 2009
	REAL-TIME APPLICATIONS WITH HTML5 Peter Lubbers : 9th Dec 2009
	DDD Alex Young : 9th Dec 2009
	Javascript Stories Rob Holland : 9th Dec 2009
	ParkBench Panel Discussion, Pizza & drin Russ Miles : 9th Dec 2009
	Groovy & Grails eXchange Keynote Guillaume LaForge : 9th Dec 2009
	Gant, the Groovy targeted scripting fram Russel Winder : 9th Dec 2009
	Easy & secure SOAPful Web Services Tareq Abedrabbo : 9th Dec 2009
	Building DSLs & Groovy Metaprogramming Venkat Subramaniam : 9th Dec 2009
	Building Killer RIAs with Flex and Grail Tomas Lin : 9th Dec 2009