Input sanitization

The goal of this talk is to educate developers on common security vulnerabilities, how they are exploited, and how to protect against them. We'll explore several of the OWASP Top 10 attack vectors like SQL injection, XSS, CSRF, session hijacking, and insecure direct object references. Each topic will be approached from the perspective of an attacker to see how these vulnerabilities are detected and exploited using several realistic examples. Once we've established an understanding of how these attacks work, we'll look at concrete steps you can take to secure web applications against such vulnerabilities. The knowledge gained from this talk can also be used for participating in "Capture the Flag" security competitions.

The document discusses various PHP security vulnerabilities like code injection, SQL injection, cross-site scripting (XSS), session hijacking, and remote code execution. It provides examples of each vulnerability and methods to prevent them, such as input validation, output encoding, secure session management, and restricting shell commands. The goal is to teach secure PHP programming practices to avoid security issues and defend against common attacks.

A lunch lecture was given at Differ (www.differ.nl) about another method of sequestering CO2. Olivine is one of the minerals that can be used for the application. It details three routes for CO2 sequestration. A focus is given on the development of a process intensification. This would increase the geological reaction rate to process engineering time scale. The proposed process has got a parallel in the "VerTech process" as established in the 1990's in Apeldoorn (the Netherlands). The lecture was from global scale (focussing on amounts of CO2 involved) down to atomic scale.

تفسير العشر الأخير من القران الكريم ويليه احكام تهم المسلم http://www.islamic-invitation.com/book_details.php?bID=706

This talk educates developers on common security vulnerabilities, how they are exploited, and how to protect against them. We'll explore several of the OWASP Top 10 attack vectors like SQL injection, XSS, CSRF, and more. Each topic will be approached from the perspective of an attacker to see how these vulnerabilities are detected and exploited using several realistic examples. We'll then apply this knowledge to see how web applications can be secured against such vulnerabilities.

The document discusses techniques for validating SSL certificates to prevent man-in-the-middle attacks. It describes reference certificates, where the client bundles the server's certificate and compares it to the one presented. It also covers certificate fingerprinting, where the client compares the certificate's fingerprint to a trusted reference. Both approaches aim to detect if a rogue certificate is intercepting the connection between client and server. The document cautions that certificate changes over time could break validation and recommends updating apps and references in a timely manner.

The document discusses various topics related to Ruby on Rails including SQLite3-Ruby, ERb, and Rack. It provides an overview of how SQLite3-Ruby works with Rails as the default database adapter. It also discusses how to use SQLite3-Ruby outside of Rails, including establishing connections, making queries, and preparing statements. The document then summarizes how ERb works as the template language in Rails and how to use it outside Rails. It ends with a brief mention of Rack.

This document describes a user authentication module created using PHP. It includes pages for sign up, login, password reset, and a user inbox. The sign up page collects user details and validates the information before inserting a new user record into a MySQL database. The login page authenticates users by matching their user ID and password. Password and security answers are encrypted before storage. The module provides functionality for common authentication tasks.

The document discusses principles of clean code, including: - Functions should be small and focus on doing one thing. - Use intention-revealing names for variables, functions, etc. - Avoid comments when possible by making code self-documenting. - Prefer exceptions over returning error codes to indicate problems.

Mugdha and Amish from OSSCube present on Php security at OSSCamp, organized by OSSCube - A Global open Source enterprise for Open Source Solutions To know how we can help your business grow, leveraging Open Source, contact us: India: +91 995 809 0987 USA: +1 919 791 5427 WEB: www.osscube.com Mail: sales@osscube.com

Why are most code bases bad? Why is it, that, despite our best intentions, code rots between our fingers? The answer is that most of us still think of code as merely a technical tool to reach a goal: implementing a feature, fixing a bug. While it certainly is that, it’s also a written medium for communicating with (other) people.

This document provides an overview of the ACC Europe's 2005 Annual Conference, including summaries of presentations on common differences between civil and common law jurisdictions and comparisons between common law systems. The conference featured presentations from legal experts on topics such as distinguishing features of various European legal systems and procedural rules. One presentation provided a high-level summary of 501 differences between civil and common law jurisdictions. Another presentation compared common law systems, noting differences in sources of law, roles of judges, and approaches to precedent between countries like England, Ireland, and local systems. The conference offered opportunities for lawyers to learn and discuss diverse international legal practices.

PHP has its own treasure chest of classic mistakes that surprises even the most seasoned expert : code that dies just by changing its namespace, strpos() that fails to find strings or arrays that changes without touching them. Do that get on your nerves too ? Let’s make a list of them, so we can always teach them to the new guys, spot them during code reviews and kick them out of our code once and for all. Come on, you’re not frightening us !

The document contains code snippets for making API calls to PayPal to facilitate different parts of an Express Checkout transaction flow. The code handles setting up an Express Checkout transaction, getting details of an Express Checkout transaction, and completing payment for an Express Checkout transaction. It also includes code for setting up a billing agreement and reference transactions.

The document discusses a new service being launched by Moie Serv to provide document summarization in 3 sentences or less. The service aims to extract the key details and essential information from documents in a concise manner. It can summarize documents from legal, medical, academic and news domains. Customers will be able to access the summarization tool through Moie Serv's website.

Security is an enormous topic, and it’s really, really complicated. If you’re not careful, you’ll find yourself vulnerable to any number of attacks which you definitely don’t want to be on the receiving end of. This talk will give you just a taster of the vast array of things there is to know about security in modern web applications, such as writing secure PHP web applications and securing a Linux server. Whether you are writing anything beyond a basic brochure website, or even developing a complicated business web application, this talk will give you insights to some of the things you need to be aware of.

BioPerl is an open source toolkit for bioinformatics data manipulation written in Perl. It contains modules for reading and writing sequence data in common formats, manipulating sequences, parsing BLAST reports and multiple sequence alignments. BioPerl objects represent sequences, features, annotations and search results in a flexible and extensible way. The toolkit is widely used for tasks like sequence analysis, parsing bioinformatics software output, and accessing biological databases.

This document discusses Boomerang, a JavaScript tool that measures web page performance from the end user's perspective. It works by including a small snippet of JavaScript on web pages that measures load time, latency, and bandwidth and sends the results back to the server. It provides more accurate real-world performance metrics than lab testing alone. The document explains how Boomerang specifically measures latency by downloading small images repeatedly, bandwidth by progressively larger images, and load time using timestamps. Contributing code or plugins to the Boomerang open source project on GitHub can help improve it.

This document is a presentation about javascript charting with YUI-Flot. It introduces YUI-Flot as a port of the Flot charting library to the YUI framework. It discusses charting options for the web, demonstrates basic chart types with YUI-Flot like scatter plots and time series, and covers how to include the library, get data, and instantiate charts. It also outlines future plans like supporting newer Flot features and contributions from the community.

The document discusses boomerang, a JavaScript tool for measuring web page performance from the end user's perspective. It works by measuring latency, bandwidth, and page load times and sending that data back to the developer. The collected data can be analyzed to identify outliers, trends over time, and opportunities for performance improvements based on factors like user location and ISP.

Setting up MySQL for near 100% application uptime is not hard, but does require enough hardware redundancy and some smart planning.

A survey found that 35% of viewers blame the operator when video streaming is not working properly, while 70% of subscribers consider TV Everywhere an important offering provided by their provider. The survey also found that gaining 50,000 additional subscribers can generate $50 million in annual revenue for providers.

The document discusses improving website performance. It notes that performance depends on bandwidth and latency. Bandwidth refers to the maximum data transfer rate, while latency refers to delays in data transfer. The document suggests concentrating optimization efforts on improving either bandwidth or latency based on individual website needs. Faster load times can positively impact user experience and business metrics like conversion rates.

This document discusses techniques for improving the performance of D3 visualizations. It begins with an overview of D3 and some basic tutorials. It then describes issues with performance for force-directed layouts and edge-bundled layouts as the number of nodes and links increases. Solutions proposed include using canvas instead of SVG for rendering, reducing unnecessary calculations, and caching repeated drawing states. The document concludes that the number of DOM nodes has major performance implications and techniques like canvas can help when exact mouse interactions are not required.

This document summarizes common web application vulnerabilities like SQL injection and cross-site scripting (XSS) for PHP applications. It provides examples of each vulnerability and discusses mitigation strategies like input sanitization, encoding output, and using security frameworks. It also covers other risks like cross-site request forgery (CSRF) and the importance of secure server configurations.

Some basic security controls you can (and should) implement in your web apps. Specifically this covers: 1 - Beyond SQL injection 2 - Cross-site Scripting 3 - Access Control

These are the slides from a talk "Spot the Web Vulnerability" held at Hacktivity 2012 conference (Hungary / Budapest 12th–13th October 2012) by Miroslav Stampar.

This document contains sample questions for the Zend Certification PHP 5 exam. It includes multiple choice questions testing PHP 5 language features and best practices related to topics like XML processing, database access, regular expressions, and security. The questions cover syntax, functions, patterns and other PHP concepts that could appear on the certification exam.

This document provides an overview and examples of using PHP for various purposes including as a templating system, scripting language, and for generating dynamic images and PDFs. It discusses PHP's widespread use based on statistics and provides code examples for creating graphs, charts and invoices using PHP's gdchart and PDF extensions.

Presented at #PHPLX 11 September 2013 The 2013 edition of OWASP (Open Web Application Security Project) top 10 has just been released and unfortunately Injections (not only SQL injection) is still the most common security problem. In this talk we will review the top 10 list of security problems looking at possible attack scenarios and ways to protect against them mostly from a PHP programmer perspective.

This document discusses strategies for dealing with legacy PHP code, including separating controllers and views, removing dependencies on global variables, refactoring procedural code to be object-oriented, and untangling nested require statements. Specific problems in legacy PHP code are said to include mixing of PHP and HTML, overuse of requires instead of method calls, and excessive use of global variables. The document provides examples of refactoring code to address these issues.

The document discusses new features introduced in C# 7 and C# 7.1-7.2, including tuples, pattern matching, out variables, discards, numeric literals, local functions, generalized async return types, inferred tuple element names, default literals, async Main method, non-trailing named arguments, and leading separators for numeric literals. It provides links to Microsoft documentation and proposals for each new feature.

The document summarizes best practices for WordPress development. It recommends leveraging WordPress core functionality through APIs and hooks, contributing to core, internationalizing code, and following coding standards to write clean, readable code. It also emphasizes allowing others to hook into code through actions and filters and the importance of sanitization, escaping and security.

Ruby on Rails is a web application framework that is designed to make programming web applications easier. It uses conventions over configurations and includes features like ActiveRecord for object-relational mapping, ActionPack for building web applications, and ActionView for rendering views. Rails emphasizes convention over configuration and aims to provide a full stack framework that makes it easy to build database-backed web applications by following its conventions.

This document outlines three "creeds" or principles for front-end engineers according to Morgan Cheng. Creed I states that performance is a key feature and outlines best practices like minimizing HTTP requests and assets. Creed II discusses progressive enhancement and building web pages that degrade gracefully across browsers. Creed III states the importance of being paranoid about security vulnerabilities like SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF) by never trusting user input.

This document discusses error management in ZIO compared to Future. It begins with an overview of ZIO and Future effects before comparing how each handles errors. Key differences noted are that Future throws errors away on a side channel while ZIO composes errors. The document recommends best practices for error handling in ZIO like extending exceptions in sealed traits and avoiding reflexive logging. It concludes by discussing how ZIO enables next-generation debugging by tracking fibers and continuations during asynchronous execution.

Dan Kaminsky introduces his new company Recursion Ventures and discusses session management on the web. He explains that the web was not designed for authenticated resources and credentials are easily accessible across sites due to issues with cookie-based session management. Kaminsky proposes using smarter string interpolation to allow developers to write code inline while preventing injections. He demonstrates a prototype called Interpolique that uses base64 encoding to sanitize variables before insertion into queries. This approach aims to make secure coding easier and mistakes immediately apparent.

Overview of HTML5 and other modern browser game technologies. Presented at Game Developers Conference 2011 by Vincent Scheib

Every software developer enjoys finding new and clever ways to solve problems. Writing code using his/her wits, intelligent and creativity. However, sometimes being too clever can lead to hard to track bugs, maintainability issues and impossible to understand code. Is all cleverly written code good code, or is it a problem just waiting to happen? In this session, I will show you real world examples of cleverly written code. And show you how we can use clean code principles, refactoring and design patterns, to transform that code from clever code to good code – one that your peers and future self would thank you for writing.

This document discusses various techniques for HTTP response splitting and cache poisoning attacks. It provides examples of exploiting HTTP response splitting vulnerabilities to inject additional headers and responses. It also covers ways to poison caches by manipulating headers like Content-Length and Last-Modified to influence caching behavior. The document examines defenses implemented in modern browsers and web servers as well as mitigation techniques. It raises questions about the potential for these attacks to impact other protocols beyond HTTP.

The document discusses refactoring legacy PHP code, specifically dealing with code that has no separation between PHP and HTML. It recommends separating code into controllers and views by gathering all code, separating controller and view code, assigning variables to a view object, changing variable references in the view code, and splitting the files. Specific problems in legacy PHP code like no separation of concerns, global variables, and reliance on includes can be addressed through techniques like creating view classes, encapsulating logic in objects, and wrapping includes in functions to untangle dependency webs. The goal is to safely change code implementation without changing behavior through refactoring.

This document introduces Interpolique, a new approach to string interpolation that aims to prevent SQL injection and other injection attacks. It demonstrates how Interpolique works by rewriting inline SQL queries to use parameterized queries behind the scenes. Interpolique uses base64 encoding to safely pass variable data into queries. It allows developers to write queries inline while still protecting against injection. The goal is to let developers write code as they normally would but make injection attacks much harder to perform.

A talk about the current state of java enterprise development, evaluation of the available alternatives to conventional enterprise solutions, tools and languages for the JVM, and possibly beyond. JUG-Roma meeting 16 Sept 2014

The document summarizes the OWASP Top 10 security risks and provides prevention techniques. It discusses injection, cross-site scripting (XSS), insecure deserialization, XML external entities (XXE), and other risks. For each risk, it recommends validating, sanitizing, and escaping user input, using prepared statements, and other best practices to prevent security vulnerabilities.

There’s no such thing as fast enough. You can always make your website faster. This talk will show you how. The very first requirement of a great user experience is actually getting the bytes of that experience to the user before they they get tired and leave.In this talk we’ll start with the basics and get progressively insane. We’ll go over several frontend performance best practices, a few anti-patterns, the reasoning behind the rules, and how they’ve changed over the years. We’ll also look at some great tools to help you.