Welcome back, my rookie hackers! As hackers, we are often faced with the hurdle of cryptography and encryption. In some cases, we use it to hide our actions and messages. Many applications and protocols use encryption to maintain confidentiality and integrity of data. To be able to crack passwords and encrypted protocols such as SSL and wireless, you need to at least be familiar with the concepts and terminology of cryptography and encryption.
The U.S. Postal Service has been in trouble for quite some time. With more and more people choosing to go digital to take care of bills, legal documents, and pretty much all other forms of correspondence, they haven't exactly kept up with the times. I mean, let's be honest—when was the last time you sent snail mail?
Don't think because your MacBook is using FileVault disk encryption your device is secure or immune to hackers. Here's how to find out if that FileVault password is strong enough to withstand an attack from a motivated attacker.
Apple has seemingly always made it a priority to show how much it cares about user security and privacy — enough that it has a page dedicated to it, proclaiming that "privacy is a fundamental human right." It's true that there are few issues more important than user privacy when it comes to technology, and Apple only makes things better in iOS 13.
Switching phones has never been easier. Google backs up most of your app data on the cloud, which can then be restored onto your new phone. Sadly, Signal doesn't use this feature since it could compromise your security. Instead, Signal stores encrypted backups locally, requiring a bit of work to restore these messages.
While it may not sound scary right off the bat, Blue Coat Systems now has an intermediate certificate authority. If you don't know what a certificate authority (CA) is, or who Blue Coat is, who cares, right? But you should... whether you use Mac or Windows.
Cryptography is the science of keeping secrets, or more specifically, the science of disguising them. As a point of fact, cryptography has progressed quite a bit farther and now encompasses file and message integrity, sender authentication, and pseudo-random number generators.
Welcome back, my greenhorn hackers. When Wi-Fi was first developed in the late 1990s, Wired Equivalent Privacy was created to give wireless communications confidentiality. WEP, as it became known, proved terribly flawed and easily cracked. You can read more about that in my beginner's guide to hacking Wi-Fi.
If you've read anything in the news about Skype recently, it probably hasn't been good. First, there was the controversy over the company listening to and recording users' conversations. Now, there's a new spam tool for Skype that can harvest usernames, see whether or not you're online, and even parse your log files. Image by Lloyd Dewolf
Smartphones are inherently bad for privacy. You've basically got a tracking device in your pocket, pinging off cell towers and locking onto GPS satellites. All the while, tracking cookies, advertising IDs, and usage stats follow you around the internet.
Whether you are sending your phone in for repairs or finally selling it to upgrade to a new flagship, you are going to need to make sure all of your personal data is removed from your device.
It has been a long while since I last came here to write an article. Graduate school keeps you busy. After I looked over what I had written previously, I decided that I should introduce another fun topic from cryptography. In this case, steganography.
The new operating system for your Mac is here, and it looks fantastic—OS X Yosemite. At Apple's WWDC presentation, we were shown the new iOS-like aesthetics, as well as other awesome enhancements to the operating system. Improved Aesthetics
When you post something online, it pretty much stays there. So it's no surprise that Snapchat, the self-destructive photo-sharing app, became such a huge hit, boasting an estimated 50 million users. Its ephemeral nature has proven popular, especially with teenagers—who are now well aware of the burden that permanence on the internet has.
The first step to getting your life together? Getting your online security together. After all, security when you're shopping, video calling, and more means more than ever in a digital age when anyone can copy your info or try to pose as you on the web. This Premium Privacy Bundle featuring Zenmate and StartMail will give you a secure VPN and encrypt your emails, all at a bundled price. The security duo is on sale for 60% off for a limited time, which means it's just $44.99 (regularly $113).
You may be familiar with image-based or audio-based steganography, the art of hiding messages or code inside of pictures, but that's not the only way to conceal secret communications. With zero-width characters, we can use text-based steganography to stash hidden information inside of plain text, and we can even figure out who's leaking documents online.
Nearly every connection to the internet is dependent on the Domain Name System. DNS, as it's more commonly called, translates domain names like gadgethacks.com into IP addresses, which is what network devices use to route data. The problem with DNS servers is that they don't have your privacy in mind.
Apple's latest updates to its operating systems add another security feature to its Find My service, so you have an even better chance at locating your lost iPhone, iPad, or Mac should it ever happen. As long as you have the option enabled, you can leverage other Apple users' devices to find yours on the map.
After reviewing the international plans for major US wireless carriers, it became obvious they're all pretty bad. Your data is heavily restricted, requiring a daily fee which can cost an extra $100+ on a seven-day vacation. That's when I learned about Google Fi, and how for most travelers, it's the best option.
While it's easy enough to take a screenshot of an end-to-end encrypted Telegram chat thread using an iPhone, it's an entirely different story on Android phones. Telegram disables screenshots for Secret Chats by default on Android, and not everyone can turn it on.
Telegram routinely boasts about its secure messaging for truly private conversations between two parties. However, default cloud chats in Telegram are only encrypted between client and server, not client and client, which means you have to be a little proactive in making sure your private conversations on Telegram are really private.
If thieves, hackers, law enforcement, or other would-be enemies should ever gain entry to your smartphone, they could also access conversations you've had in Signal Private Messenger. To better secure your encrypted communications, you can password-protect the whole app and its contents — but only on Android. Even then, it's necessary to perform data deletion on a periodic basis, if not immediately.
Google, the company that rules the internet, is now testing a method to leverage its machine learning with its ubiquitous presence on mobile devices. The new model they're employing is called Federated Learning, and it hopes to apply artificial intelligence to Google's services on Android without compromising user privacy.
When Android Nougat is released sometime this fall (or sooner), a new feature called "Quick Reply" will allow users to respond to incoming text messages directly from the notification. It will definitely be nice to carry on a conversation without leaving the screen you're currently viewing, but unfortunately, most of us won't get that Android Nougat update for quite some time.
A VPN service is almost an essential these days. Good ones can block ads, prevent tracking cookies, encrypt your internet traffic for better security, and even spoof your device's location to bypass geo-restrictions — all things you should be concerned about in the age of NSA snooping and Facebook data mining.
With the FBI getting access to iPhones, and apps like Waze being used to track people's locations, you've got to wonder just how safe and secure your smartphone is... or isn't. When you consider everything you do on your phone, from taking and sharing pictures to mobile banking, keeping your information safe is a crucial step that may seem out of your hands.
I wrote this about two years ago to help people make realistic passwords. The best part was while writing it I realized I encrypted the list in a manner only the maker would know.... on to the show
When browsing the web, you may not be quite as anonymous as you think, especially if you are using public WiFi. The easiest way to stay as anonymous and safe as you are going to get, is to use a VPN (there are a number of great free ones). In this tutorial, we will show you how to set up a VPN on Android, and how this protects you.
Last week, Apple issued an iOS 7.0.6 update that fixed a serious security vulnerability that could allow hackers to steal passwords, read emails, and get info from other SSL-encrypted communications.
Let's be honest for a second; we all have sensitive material on our phones that we wouldn't want anyone else to ever see. Maybe it's to protect ourselves or someone else, or maybe it's none of your business why I don't want you to see pictures of my bachelor party. Regardless, sometimes we need to keep things hidden and safe.
Social media is where we post our thoughts for the world to see, but sometimes a little more exclusivity is needed. And that's where Scrambls comes in.
Most of us have some sort of malware scanner or antivirus program on our computers, but what about our smartphones? A lot of people don't realize that computers aren't the only devices that are susceptible to malicious software and apps—they can follow you on your smartphone or tablet, too.
We use smartphones for just about everything, and while that may be beneficial to us in our day-to-day lives, it can also be used against us in the court of law.
Call any number you like and have any number show up on that person's caller ID. You can call from any phone in the World! Great for calling someone who does not want to answer the phone, checking up on your boyfriend or girlfriend, or just having fun with practical jokes. Learn how to change your phone number on caller ID to prank call your friends by watching this video tutorial.
When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we're going to look specifically at how to encrypt data in Python with dynamically generated encryption keys using what is known as the Diffie-Hellman key exchange.
While it's a more secure platform for messages and calls, Signal's job isn't to prevent unknown users from contacting you, so you run into the same issues you would with a regular phone number. People you know that you don't want to talk to may try to strike up a conversation and you'll still get spam messages. Luckily, it's easy to block these suckers.
These days, that pocket-sized computer we call a smartphone is home to your entire digital life. But with the onset of mobile payments and online banking, the line between your virtual world and the physical realm is becoming increasingly blurred.
An internet connection has become a basic necessity in our modern lives. Wireless hotspots (commonly known as Wi-Fi) can be found everywhere!
Want to hack a LAN? Well, hacking local area networks is easier than you'd think. And by watching a few short videos, you can become a master hacker, something every techie wants to achieve. And what's the best way to hack a LAN? Ettercap, a password sniffing program.
