Lawrence Perez, from Saddleback College, and his assistant Charlie, give this pre-algebra lesson on adding negative numbers together. You'll learn the easiest way to do it, and maybe even freshen up on your subtracting skills. Don't waste your time in summer school, learn it here.
Welcome to Google's Python Class – a seven-segment, two-part free virtual class for people with a little bit of programming experience who want to learn Python. The class includes written materials, lecture videos, and lots of code exercises to practice Python coding. The first exercises work on basic Python concepts like strings and lists, building up to the later exercises which are full programs dealing with text files, processes, and http connections. The class is geared for people who ha...
Okay, just to clear things up before you head over to watch the video, duct tape painting does not involve grinding up little pieces of duct tape to make paint.
In this video, Jim describes how a truncated version of an icosahedron looks like, with the help of a three dimensional soccer ball.
In this Fine Art video tutorial you will learn how to understand your lens and its effect on depth of field. The lens in the video has some inscriptions which are interpreted like this. 50mm is the focal length of the lens. The aperture is from f1.4, which is the widest lens opening to f16, which is the smallest lens opening. The higher the number the lesser the lens opening. Aperture determines the amount light that comes through the lens. Aperture also decides the depth of field. With a wid...
Today's post is a small go-to guide for beginner programmers in Null Byte. With many of our community members picking up programming from our Community Bytes, it only makes sense to lay out a one-stop guide for your reference. Hopefully this guide will help you make an educated and thoughtful choice on what programming languages you want to learn, and how you want to learn said languages.
With a simple social engineering trick, sudo passwords can be captured in seconds without the target's knowledge. The passwords can then be saved to a file or exfiltrated to another computer on the network.
Palmist and astrologer Peeter John explains the right, left, and active hand for palm-reading in this how-to video. The active hand is the dominant hand which is more important to be interpreted for palmistry. This video also suggests a method for determining which is the active hand. Watch this video palmistry tutorial from Peter John and learn how to distinguish the active hand for a palm reading.
Welcome back, my amateur hackers! Over the course of the next year, we will be developing our own zero-day exploits. In my first article in this series, I introduced you to buffer overflows, which are the source of some of the most lethal exploits, particularly the "remote code execution," so we are focusing our exploit development here on a buffer overflow.
Hi Folks. This is my first post. I will teach how to create a server and client python reverse shell using sockets and python language. The script i'll post here is going to be very simple, and from here you'll have the possibility to adapt to your own purpose. For example, my original script can download files, upload files, make changes to registry, create user accounts and more. I'm sure you could do it on your own too.
Unlike the realm of virtual reality, augmented reality is less about losing yourself in some fantasy environment, and more about getting things done in the real world. So while we've seen some great games that capture the imagination on devices like the Magic Leap One and the HoloLens, when it comes to real-world usage, the biggest developments coming for AR apps that are the more practical ones.
A development duo has concocted an iPhone app that displays related tweets based on objects recognized by the device's camera.
Our brains do a magnificent amount of work to process visual stimuli, but they aren't difficult to fool. Optical illusions can trick our minds into believing what we're seeing is real, even if it's not—and virtual and mixed reality technologies take advantage of this little loophole in our brain to help us accept the unreal.
The biggest hurdle faced when text messaging (besides more convincing lies) is accurately communicating our emotion and tone. Anything we say can be interpreted in various subjective ways by the recipient, and that's why we have emoji—to illustrate what we actually want to say.
After months of waiting, the iPhone 11 is here. At an event in Cupertino, Apple unveiled the iPhone 11, 11 Pro and 11 Pro max. You probably have a lot of questions after reviewing the specs sheet, including wanting to know more about the IP68 rating that all three phones have. We're here to clarify.
Move over whole wheat — white bread may be back in style after a new study shows that it may be your gut microbes that decide what kind of bread is best for you.
Google Assistant was just released for iOS today. You may know it as the AI-powered assistant that makes Google Home tick, or perhaps you've heard from one of many review sites about how much better it is than Siri. Well, before you run off to the App Store to install Google Assistant, let me save you some time: It sucks.
Samsung created quite a buzz when it debuted a built-in heart rate sensor on the Galaxy S5 back in 2014, but amazingly, not many other manufacturers decided to follow suit. It's really a shame, too, since data from a heart rate sensor would go perfectly hand in hand with the increasing fitness- and activity-tracking features that most smartphones sport these days.
Contrary to popular belief, taking someone's mind off their sadness and telling them to "cheer up" doesn't do much good. Misery loves company, and while it may be a tiresome cliché, there's actually some science behind it.
Phantom phone vibrations. You might feel them in the pocket of your jeans, or when your handbag is on your shoulder—even when you're holding your phone in your hand. When you do, you immediately wake it up to see who texted or what app just had an update—but there are no alerts.
As pentesters and hackers, we're going to be working with text frequently — wordlists, configuration files, etc. A lot of this we'll be doing on our machine, where we have access to whatever editor we prefer. The rest of it will be on remote machines, where the tools for editing will be limited. If nano is installed, we have an easy-to-use terminal text editor, but it isn't very powerful.
Hello everybody. I'm back with Part-2 of this series. In this part we will be programming in C our server and i will be explaining one more "key concept" so everybody got a better understanding on this.
What's up readers? Today I'll be introducing to you a new vulnerability called the Format String vulnerability (in case you missed the title). It won't be much, just a little motivation to keep you guys going. A little teaser, if you may.
Welcome back, my hacker novitiates! A short while ago, I introduced you to regular expressions. Regular expressions are a language that is particularly useful for finding complex text patterns in streams of data.
Welcome back, my hacker apprentices! To enter the upper echelons of hackerdom, you MUST develop scripting skills. It's all great and well to use other hacker's tools, but to get and maintain the upper hand, you must develop your own unique tools, and you can only do that by developing your scripting skills.
Welcome back, my novice hackers! There are SOOOO many ways to hack a system or network, which means you need to think creatively in order to be successful.
By using almost any packet-crafting tool, a hacker can perform denial-of-service (DoS) attacks. With the power to create just about any packet with any characteristics, a hacker can easily find one that will take down a host or network. Nmap and Hping are effective packet manipulation tools, but there's also Scapy, which is almost infinitely customizable.
When it comes to attacking devices on a network, you can't hit what you can't see. Nmap gives you the ability to explore any devices connected to a network, finding information like the operating system a device is running and which applications are listening on open ports. This information lets a hacker design an attack that perfectly suits the target environment.
If you use the Google Assistant on your Android device, you can easily send a text message to any one of your contacts. But even though that same Assistant is powering the Google Home, you can't use the smart speaker to accomplish the same task — at least, not without some tinkering.
When iOS 14 came out, Apple released Translate, an app for translating voice and text between several languages (even within Safari). Unfortunately, it's not as comprehensive as some third-party apps or even Siri. That's why Apple uses Microsoft's translation services within Shortcuts. It may sound surprising, but we're not complaining since you can do some pretty awesome things with it.
When it comes to washing clothes, the laundry symbols on your tags might as well be hieroglyphics. They're difficult to interpret, easy to forget, and even easier to ignore. But if you don't want to ruin expensive designer clothes, blankets, and other fiber-based materials, you need to figure out the meaning behind those tiny icons. Thankfully, your iPhone can help out.
It's a strange time for us iOS beta testers. While Apple prepares for the general release of iOS 13 on Thursday, it's also beta testing that software's successor, iOS 13.1. An iPhone updated to iOS 13 on Sept. 19 will only have 11 days before seeing 13.1 in its Software Update page on Sept. 30. To prepare for this release, Apple released the fourth iOS 13.1 public beta, just about the same time as its developer counterpart.
Apple's iOS 13 is nearly here. After four months of beta testing, the latest iPhone software update promises over 200 brand new features, like system-wide dark mode and an overhauled Reminders app. That said, it'll be shortlived, as Apple plans to release iOS 13.1 as a supplemental update just 11 days later. In fact, the company just seeded developers the fourth beta for iOS 13.1 today, Sept. 18.
Yesterday showed us our first look at the iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max. But it wasn't all about hardware. Apple also released the iOS 13 Golden Master, making iOS 13.1 the main focus for us beta testers. Now, Apple just seeded the third public beta, following yesterday's release of 13.1 dev beta 3.
It's a big day for Apple. First, the company announced its new suite of phones: iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max. Then, we get the iOS 13 Golden Master, the beta version of iOS 13 that will eventually release to the general public on Sept. 19. Now, it seems the company has dropped the third developer beta for iOS 13.1, set to release to all compatible iPhones on Sept. 30.
Apple has pulled quite the headscratcher in anticipation of its big iPhone unveiling next week. Its latest iPhone update, iOS 13.0, is just on the horizon, going through eight beta versions so far. And yet, before that software's official release, the company has started beta testing iOS 13.1, with no explanation why. And the second public beta for iOS 13.1 is now out, so let's see what's new.
When Apple takes the stage next week, we have no idea what version of iOS it will release. For months it seemed like a given that we would, of course, see iOS 13 seeded to our iPhones. Now, we aren't sure if Apple will tout iOS 13 or iOS 13.1, since the latter is now the focus of its beta testing. In fact, 13.1's second developer beta is now available to download and install.
Beta testing certainly has its perks. While you do need to deal with bugs, you're introduced to new features before the general community. And if we're talking iPhones, there are over 200 new features in iOS 13 beta. If you're already on board with iOS 13 public beta 6 for iPhone, you can get an upgrade on that firmware as Apple just released public beta 7 today.
Hackers often rely on lazy system admins and unpatched vulnerabilities to get access to a host. Keeping intruders off of our machines requires us to update daily, only run the services we need, and read the code, among other things, but we can still make mistakes. Luckily for us, we can limit the damage caused by those mistakes by running SELinux.
Apple shocked us all yesterday when it released iOS 13.1 developer beta 1. It was an unprecedented move since iOS 13.0 is still in beta testing and since Apple has never pushed out a "point" beta release before the stable base version. And now, you can get your hands on iOS 13.1 for iPhone if you're on the public beta.
