Ahmed Mohamed

Ahmed Elhady Mohamed is a researcher at InfoSec Institute and an information security professional and author.

He focuses mainly in the areas of exploitation,reverse engineering and web security. He's the webmaster of www.ITsec4all.com

Articles from Ahmed Mohamed

PHP email injection example [Updated 2019]

September 2, 2019

Nowadays, internet usage is growing dramatically, but the vast majority of internet users don't have a security background. Most of people use the Internet f

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Password cracking using Cain & Abel

January 25, 2018

According to the official website, Cain & Abel is a password recovery tool for Microsoft Operating Systems. It allows easy recovery of various kinds of p

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Race condition (TOCTOU) vulnerability lab

March 14, 2016

[download]CLICK HERE TO DOWNLOAD THIS LAB AS A PDF[/download] Lab overview A race condition occurs when two threads access a shared variable at the same ti

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Invalid SSL certification exploitation

December 9, 2013

Internet usage is growing dramatically, but the vast majority of Internet users don't have any security backgrounds. Nor do a large majority of companies car

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Dictionary attack using Burp Suite

August 20, 2013

Nowadays internet usage is growing dramatically because of this, a vast majority of companies and individuals that provide services have a website so custome

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Phishing and social engineering techniques 3.0

June 19, 2013

This is the third part of the phishing and social engineering techniques series. In the first article we have discussed what phishing is and what the differe

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Phishing and Social Engineering Techniques 2.0

May 22, 2013

This is the second part of the phishing and social engineering techniques series. In the first article, we have discussed what phishing is, as well as differ

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Phishing and social engineering techniques

April 18, 2013

Internet usage is growing dramatically, but the vast majority of internet users don't have any security backgrounds. Neither do a large majority of companies

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Manual packet analysis

September 24, 2012

In this tutorial, we will learn how to read a packet header. It's not very common to inspect packet fields, but it is important to know how to read and inspe

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Complete file upload vulnerabilities

June 26, 2012

Allowing an end user to upload files to your website is like opening another door for a malicious user to compromise your server. However, uploading files is

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