Chinh Hang Search Results

How To: Check Your MacOS Computer for Malware & Keyloggers

While you might suspect your MacOS computer has been infected with malware, it can be difficult to know for sure. One way to spot malicious programs is to look for suspicious behavior — like programs listening in on our keyboard input or launching themselves every time we boot. Thanks to free MacOS tools called ReiKey and KnockKnock, we can detect suspicious programs to discover keyloggers and other persistent malware lurking on our system.

How To: Beat LFI Restrictions with Advanced Techniques

One of the most common web application vulnerabilities is LFI, which allows unauthorized access to sensitive files on the server. Such a common weakness is often safeguarded against, and low-hanging fruit can be defended quite easily. But there are always creative ways to get around these defenses, and we'll be looking at two methods to beat the system and successfully pull off LFI.

How To: Sick of Thumbs Up? Here's How to Change the Default Chat Emoji in Individual Messenger Threads

When you can't think of a way to respond in Messenger with words, emojis and stickers will do the trick. Since Facebook is all about the "likes," which use a thumbs-up icon, there's a shortcut to the symbol just to the right of the chat field. It's always there to send a quick like in response to something. But it doesn't have to be the standard Facebook thumbs-up sign — it can be any emoji you want.

How To: Use Snapchat to Figure Out What Song Is Playing Around You

Say you're sending a snap to a friend at a restaurant, bar, store, what have you, but you're curious about the song that's playing in the background. You could leave the app to Shazam it, or you could ask screen-hogging Siri or Google Assistant what the track is, but why not just have Snapchat do the work for you? With its built-in scanner, you can discover a song without ever leaving the app.

How To: Leverage a Directory Traversal Vulnerability into Code Execution

Directory traversal, or path traversal, is an HTTP attack which allows attackers to access restricted directories by using the ../ characters to backtrack into files or directories outside the root folder. If a web app is vulnerable to this, an attacker can potentially access restricted files that contain info about all registered users on the system, their permissions, and encrypted passwords.

How To: Chat with End-to-End Encryption Using Facebook Messenger's Secret Conversations

Traditionally, if you were looking for end-to-end encrypted messaging, you'd stick with something like iMessage, WhatsApp, or Signal. However, if you already use Facebook Messenger, you have all you need for truly private chats with its built-in E2E encryption. It's available to all users, on Android and iOS — you just need to know where to look.

How To: Use Command Injection to Pop a Reverse Shell on a Web Server

Command injection is a technique used by hackers to execute system commands on a server, usually via a web application or some kind of GUI. This can happen when an application provides some sort of functionality to the user involving the use of system commands. When the input is not properly sanitized, commands not originally intended to be run are allowed to be executed.

News: Microsoft Sets Developers Up for Success with the Windows Mixed Reality Academy Deep Dive

At Build 2017, the annual developer's conference, Microsoft featured a Windows Mixed Reality Academy. This class was designed to get a developer started creating Mixed Reality experiences quickly. For those of us already developing for the Microsoft HoloLens, while the class — which is now available on the Microsoft website — did offer our first real chance to work with the new Acer HMD, there was not much depth.

News: Scientists Show That the Earlier HIV Is Treated, the Better

HIV-infected people who are treated long-term with antiviral drugs may have no detectable virus in their body, but scientists know there are pools of the virus hiding there, awaiting the chance to emerge and wreak havoc again. Since scientists discovered these latent pools, they have been trying to figure out if the remaining HIV is the cause of or caused by increased activation of the immune system.

News: Another Reason to Wash Your Sheets—Deadly Hospital Fungus Linked to Moldy Linens

Six people have died from fungal infections in Pittsburgh hospitals since 2014—that fact is indisputable. The rest of the situation is much vaguer. A lawsuit has been filed against the hospitals on behalf of some of the deceased patients, alleging that moldy hospital linens are to blame. While the lawyers argue over who's at fault, let's look at how this could have happened.

How To: OSX VM Image Install Guide

I was on our new #nullbyte IRC channel when someone told me how tedious it is to install an OSX Virtual Machine on Virtual Box (I think it was wawa). We all know Linux rocks (gets acknowledgement from the crowd), but there are morons out there, multiplying at a never before seen rate, who use OSX. We at nullbyte should be prepared for anything and everything. So, in this guide I take you step by step to creating your OSX Yogemite VM.

How To: The Only 'Recipe' You'll Ever Need for Roasting Veggies

I've never had a problem with veggies—we've always been the best of friends—but I do have a lot of other people in my life that have been less than enamored with this basic food group in the past. Some cite the bitter flavor associated with veggies like Brussels sprouts, while others dislike the various consistencies that come with boiling or steaming vegetables such as broccoli or eggplant.

News: What Is a White Hat Hacker?

In recent weeks, some people have been shunned from the Null Byte community because they expressed "black hat" aspirations. This is because Null Byte is the "white hat" hacker training/playground. Although most of us think we know what that means, it does beg the question; "Who and what is a white hat hacker?"

How To: Take Better Photos with Your Phone

It's truly amazing how far smartphone camera hardware has come in such a short period of time. It took roughly 5 years to advance the image processing capabilities from a pixelated mess to the crisp and clear photos we can take today. This reaches well beyond the megapixel spec race, since camera modules these days sport vastly improved optics, wider aperture, and even larger pixel sensors that capture more light.

How To: Install Android 6.0 Marshmallow on Your Nexus Right Now

Google has finally released the next version of the world's leading operating system—Android 6.0 Marshmallow. This latest iteration isn't as much of a visual overhaul as Lollipop was, but it packs in more new functionality than almost any update before it. Awesome features like Now on Tap, granular permissions control, and a deep sleep battery-saving feature called Doze round out the highlights, but there is far more to it than that.