Hack Network Security

Electronic warfare tactics work by jamming, disrupting, or disabling the technology a target uses to perform a critical function, and IoT devices are especially vulnerable to attacks. Wireless security cameras like the Nest Cam are frequently used to secure critical locations, ...more

In my previous article, I discussed installing and configuring OpenVAS on Kali Linux. Now it's time to start using OpenVAS with the Greenbone Security Assistant to audit networks for security issues. This can be extremely helpful when you are looking for vulnerabilities or mis ...more

Google recently released a new mesh router known as Nest Wifi. The updated and rebranded Google Wifi brought many improvements, such as faster processing power and an increased level of wireless security called WPA3. But while it's not enabled by default, you can still get the ...more

Last month, it was revealed that Juniper Networks' routers/firewalls were hacked. It was reported that a backdoor was implanted in the operating system of their routers/firewalls and that attackers could listen in on all encrypted communication. There are now fears that all co ...more

While the security behind WEP networks was broken in 2005, modern tools have made cracking them incredibly simple. In densely populated areas, WEP networks can be found in surprising and important places to this day, and they can be cracked in a matter of minutes. We'll show y ...more

Welcome back, my budding hackers! One of the keys to being successful as a hacker, pentester, or cyber warrior is the ability to find vulnerabilities or flaws in the target system, which are what we exploit when we hack. We have looked at several ways to do that including var ...more

Welcome back, my fledgling hackers! Nearly every commercial enterprise worth hacking has an intrusion detection system (IDS). These network intrusion detection systems are designed to detect any malicious activity on the network. That means you! As the name implies, a networ ...more

Welcome back, my greenhorn hackers! Before we attempt to exploit any target, it is wise to do proper reconnaissance. Without doing reconnaissance, you will likely be wasting your time and energy as well as risking your freedom. In previous guides, I have demonstrated multiple ...more

Welcome back, my fledgling hackers! One of the first issues any hacker has to address is reconnaissance. Before we even begin to hack, we need to know quite a bit about the target systems. We should know their IP address, what ports are open, what services are running, and wh ...more

Networking is built largely on trust. Most devices do not verify that another device is what it identifies itself to be, so long as it functions as expected. In the case of a man-in-the-middle attack, we can abuse this trust by impersonating a wireless access point, allowing u ...more

Welcome back, my novice hackers! My recent tutorials have been focused upon ways to NOT get caught. Some people call this anti-forensics—the ability to not leave evidence that can be tracked to you or your hack by the system administrator or law enforcement. One the most com ...more

The Deauther Watch by Travis Lin is the physical manifestation of the Wi-Fi Deauther project by Spacehuhn, and it's designed to let you operate the Deauther project right from your wrist without needing a computer. That's pretty cool if you want to do all the interesting thing ...more

Welcome, my neophyte hackers! The aspiring hacker needs to know a bit of Linux to be successful, and probably most importantly, Linux networking. To fill that knowledge gap, I'm offering this guide on Linux networking basics. I assume that you understand a small amount of net ...more

Welcome back, my greenhorn hackers! As expected with Null Byte's dramatic growth over the last year, we have added many new aspiring hackers who are still lacking in the basics of networking. In addition, with the new "White Hat" certifications coming out shortly, the exam wi ...more

Welcome back, my greenhorn hackers! In the first part of this series, I introduced you to the basics of networking including IP addresses, ports, NAT, and DHCP. In this lesson, I want to introduce you to the basics of TCP/IP, i.e., Transmission Control Protocol (TCP) and Inte ...more

Wi-Fi tools keep getting more and more accessible to beginners, and the LAZY script is a framework of serious penetration tools that can be explored easily from within it. This powerful and simple tool can be used for everything from installing new add-ons to grabbing a WPA ha ...more

Hashes containing login passwords are transmitted between Windows computers on local Wi-Fi networks. By intercepting and decrypting these hashes using Responder and John the Ripper, respectively, we can learn a target's login credentials which can be later used to gain physica ...more

Welcome back, my novice hackers! This new series on Bluetooth hacking was inspired by a recent episode of Mr. Robot (my favorite TV show). In episode 6, Eliot hacked the bluetooth keyboard of the police office in order to hack the prison and release his nemesis, Vera. This is ...more

What's your Twitter handle worth? If it's considered "desirable" (aka short and simple), it'll get you around 100 bucks, or, if you prefer, the affections of a teenage girl. A user with the handle @blanket found out the hard way that Twitter's security is atrocious when his a ...more

Welcome back, my hacker apprentices! I recently began a new series on digital forensics to show aspiring hackers what the forensic investigator can do and see while investigating a cyber attack. This is the second installment in that series and will focus upon network forensi ...more

Welcome back, my hackers apprentices! To own a network and retrieve the key data, we only need to find ONE weak link in the network. It makes little sense to beat our heads against heavily fortified systems like the file and database server when we can take advantage of the b ...more

Welcome back, my hacker apprentices! My recent posts here in Null Byte have been very technical in nature, so I thought that I'd have a little fun with this one. Have you ever had an annoying neighbor whose dog barks all night, who has loud parties that keep you awake, or who ...more

Your social security number, credit card information, and medical history can fall into the wrong hands if you're not careful about how and where you share your data online. If you really care about your data, there are tools and techniques you can utilize to protect yourself ...more

Apple's macOS operating system is just as vulnerable to attacks as any Windows 10 computer or Android smartphone. Hacker's can embed backdoors, evade antivirus with simple commands, and utilize USB flash drives to completely compromise a MacBook. In this always-updated guide, ...more

Welcome back, my fledgling hackers! Hacking has a long and storied history in the U.S. and around the world. It did not begin yesterday, or even at the advent of the 21st century, but rather dates back at least 40 years. Of course, once the internet migrated to commercial use ...more

The term "hacker" often has negative associations attached to it, yet the world is in dire need of professionals with hacking skills. White hat hackers are ethical computer hackers that use their hacking skills to pinpoint network vulnerabilities and patch them up before they ...more

Many of my aspiring hackers have written to me asking the same thing. "What skills do I need to be a good hacker?" As the hacker is among the most skilled information technology disciplines, it requires a wide knowledge of IT technologies and techniques. To truly be a great h ...more

Welcome back, my fledgling hackers! The database is the hacker's "pot-of-gold," as it contains information that is very valuable to both the business and the hacker. In this, the second of my series on hacking databases, we're on the "hunt" for Microsoft's SQL Server. Althoug ...more

Welcome back, my greenhorn hackers! Continuing with my Wi-Fi hacking series, this article will focus on creating an invisible rogue access point, which is an access point that's not authorized by the information technology staff and may be a significant security vulnerability ...more

Welcome back, my tenderfoot hackers! A number of you have written me telling me how much you enjoy the Mr. Robot series on USA Network. I am also a huge fan! If you haven't seen it yet, you should. It may be the best show on TV right now. Mr. Robot is about a young man with ...more

If you're an avid programmer or developer, your time is likely spent creating apps and perhaps the occasional website. And while these go-to coding endeavors are exciting and occasionally lucrative, more and more coding pros are turning to careers in cybersecurity and ethical ...more

The macOS 10.14 security update tried to make parts of the operating system difficult for hackers to access. Let's take a closer look at how its new feature works and what we can do to spoof the origin of an application attempting to access protected data. Apple introduced so ...more

Despite the security concerns that have plagued Facebook for years, most people are sticking around and new members keep on joining. This has led Facebook to break records numbers with over 1.94 billion monthly active users, as of March 2017 — and around 1.28 billion daily act ...more

It only takes a few commands to manipulate a MacBook's secure HTTPS traffic and pluck login passwords out of the encrypted data. Let's take Facebook and Gmail hacking to the next level by intercepting Safari and Google Chrome web traffic in real time. Both Facebook and Gmail ...more

After numerous scandals like the Equifax data breach and the 2016 US election, cybersecurity has become a significant issue for Americans. Unfortunately, anytime we use our devices, we're open to a cyber attack — especially when we browse the web. However, there are ways that ...more

Security awareness seems to be a hot topic these days on the web, with developers making apps and devices that can hack networks and machines with just a few clicks. But these applications aren't only exploiting security flaws in systems and networks, they're being used by ama ...more

Welcome back, my nascent Hackers! In my last blog, we looked at a passive way to gather information necessary for a hack. The advantage of using passive recon is that it's totally undetectable, meaning that the target never knows you're scouting them and you leave no tracks. ...more

The Play Store hasn't been the most secure place for apps lately. A quick Google search for "Play Store malware" will give you a taste of some of the malicious apps that snuck their way onto Android's official app store. Google is aware of the problem and they're tying to fix ...more

Welcome back Hackers\Newbies! Hey guys first of all I would like to explain my absence here in NullByte. I got a little "occupied" with "other things". When I got back, I saw all these HowTo's, articles, Help Questions, I decided, I need to share more of what I have, to you g ...more

Armis Labs has revealed eight vulnerabilities, called "BlueBorne", which put 5.3 billion Android, iOS, Windows, and Linux devices that use Bluetooth at risk. With it, hackers can control devices, access data, and spread malware to other vulnerable devices through networks. In ...more

Whether you miss the good old days of Telnet or you want to know what hacking was like when security was nothing but an afterthought, Telehack is the game for you. The text-based hacking game is a simulation of a stylized combination of ARPANET and Usenet, circa 1985 to 1990, ...more

Apple's Gatekeeper security software for macOS (Mac OS X) is vulnerable to remote attacks up to version 10.14.5. An attacker that's anywhere in the world can exploit MacBooks and other Mac computers by sharing a single ZIP file. The vulnerability was discovered by Filippo Cav ...more

While password cracking and WPS setup PIN attacks get a lot of attention, social engineering attacks are by far the fastest way of obtaining a Wi-Fi password. One of the most potent Wi-Fi social engineering attacks is Wifiphisher, a tool that blocks the internet until desperat ...more