A 33-year-old man has been arrested after allegedly hacking into his former employer’s computer system to plant ransomware.
Graham Cluley
Learn network penetration testing / ethical hacking in this full tutorial course for beginners. This course teaches everything you need to know to get started with ethical hacking and penetration testing. You will learn the practical skills necessary to work in the field. Throughout the course, we will develop our own Active Directory lab in Windows, make it vulnerable, hack it, and patch it. We’ll cover the red and blue sides. We’ll also cover some of the boring stuff like report writing :).
This course was originally live streamed weekly on Twitch and built from lessons learned in the previous week.
💻 GitHub repo (for homework): https://github.com/hmaverickadams/Beginner-Network-Pentesting
🎥 Course created by The Cyber Mentor. Check out his YouTube channel: https://www.youtube.com/channel/UC0ArlFuFYMpEewyRBzdLHiw
🐦 The Cyber Mentor on Twitter: https://twitter.com/thecybermentor
⭐️ Course Contents ⭐️
⌨️ (0:00) – Course Introduction/whoami
⌨️ (6:12) – Part 1: Introduction, Notekeeping, and Introductory Linux
⌨️ (1:43:45) – Part 2: Python 101
⌨️ (3:10:05) – Part 3: Python 102 (Building a Terrible Port Scanner)
⌨️ (4:23:14) – Part 4: Passive OSINT
⌨️ (5:41:41) – Part 5: Scanning Tools & Tactics
⌨️ (6:56:42) – Part 6: Enumeration
⌨️ (8:31:22) – Part 7: Exploitation, Shells, and Some Credential Stuffing
⌨️ (9:57:15) – Part 8: Building an AD Lab, LLMNR Poisoning, and NTLMv2 Cracking with Hashcat
⌨️ (11:13:20) – Part 9: NTLM Relay, Token Impersonation, Pass the Hash, PsExec, and more
⌨️ (12:40:46) – Part 10: MS17-010, GPP/cPasswords, and Kerberoasting
⌨️ (13:32:33) – Part 11: File Transfers, Pivoting, Report Writing, and Career Advice
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Reading Time: ~ 3 min.
Why do so many businesses allow unfettered access to their networks? You’d be shocked by how often it happens. The truth is: your employees don’t need unrestricted access to all parts of our business. This is why the Principle of Least Privilege (POLP) is one of the most important, if overlooked, aspects of a data security plan.
Appropriate privilege
When we say “least privilege”, what we actually mean is “appropriate privilege”, or need-to-know. Basically, this kind of approach assigns zero access by default, and then allows entry as needed. (This is pretty much the opposite of what many of us are taught about network access.) But by embracing this principle, you ensure that network access remains strictly controlled, even as people join the company, move into new roles, leave, etc. Obviously, you want employees to be able to do their jobs; but, by limiting initial access, you can minimize the risk of an internal breach.
If you haven’t already, now is the perfect time to take a look at your network access policies. After all, it’s about protecting your business and customers—not to mention your reputation.
Listen to the podcast: Episode 6 | Shoring Up Your Network Security with Strong Policies to learn more about implementing the Principle of Least Privilege and other network security best practices.
Navigating the difficult conversations around access control
It’s no surprise that employees enjoy taking liberties at the workplace. In fact, Microsoft reports that 67% of users utilize their own devices at work. Consequently, they may push back on POLP policies because it means giving up some freedom, like installing personal software on work computers, using their BYOD in an unauthorized fashion, or having unlimited usage of non-essential applications.
Ultimately, you need to prepare for hard conversations. For example, you’ll have to explain that the goal of Principle of Least Privilege is to provide a more secure workplace for everyone. It’s not a reflection on who your employees are or even their seniority; it’s about security. So, it’s essential for you, the MSP or IT leader, to initiate the dialogue around access control––often and early. And, at the end of the day, it’s your responsibility to implement POLP policies that protect your network.
Firewalls and antivirus aren’t enough
There’s a common misconception in cybersecurity that the firewall and/or antivirus is all you need to stop all network threats. But they don’t protect against internal threats, such as phishing or data theft. This is where access policies are necessary to fill in the gaps.
Here’s a prime example: let’s say you have an employee whose job is data entry and they only need access to a few specific databases. If malware infects that employee’s computer or they click a phishing link, the attack is limited to those database entries. However, if that employee has root access privileges, the infection can quickly spread across all your systems.
Cyberattacks like phishing, ransomware, and botnets are all designed to circumvent firewalls. By following an appropriate privilege model, you can limit the number of people who can bypass your firewall and exploit security gaps in your network.
Tips to achieve least privilege
When it comes to implementing POLP in your business, here are some tips for getting started:
- Conduct a privilege audit. Check all existing accounts, processes, and programs to ensure that they have only enough permissions to do the job.
- Remove open access and start all accounts with low access. Only add specific higher-level access as needed.
- Create separate admin accounts that limit access.
- Superuser accounts should be used for administration or specialized IT employees who need unlimited system access.
- Standard user accounts, sometimes called least privilege user accounts (LUA) or non-privileged accounts, should have a limited set of privileges and should be assigned to everyone else.
- Implement expiring privileges and one-time-use credentials.
- Create a guest network leveraging a VPN for employees and guests.
- Develop and enforce access policies for BYOD or provide your own network-protected devices whenever possible.
- Regularly review updated employee access controls, permissions, and privileges.
- Upgrade your firewalls and ensure they are configured correctly.
- Add other forms of network monitoring, like automated detection and response.
The post Shoring Up Your Network and Security Policies: Least Privilege Models appeared first on Webroot Blog.
Salut
Dans cette vidéo, je vais vous montrer comment pirater un ordinateur sur le même réseau local avec Kali Linux
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Hack any computer on same network with Kali Linux
NB: Cette vidéo est uniquement a but educatif
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Gagner l’argent avec adfly, s’inscrire ici : http://bit.ly/2nu2E5X
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Voir aussi :
1- Les commandes linux [partie 1] (cat, head , tail, useradd, userdel, paste) : http://bit.ly/2derS1z
2- Les commandes linux [Partie 2] (date , mkdir , rm , touch , cp , cd , su..) : http://bit.ly/2e6YHed
3- Les commandes linux [Partie 3] (tree ,cal, top, find ,sort , mv , who,..) : http://bit.ly/2efpLNe
4 – Comment envoyer un mail à plusieurs contacts au meme temps :http://bit.ly/2bBVMem
5 – Comment bien sécuriser son compte Facebook a 100% ? :http://bit.ly/2b5khkk
6 – La meilleure solution pour récupérer des données perdues sur une clé usb : http://bit.ly/2aMRpgX
7 – comment créer une clé usb multiboot (fedora+windows 8.1) : http://bit.ly/2bdYk3S
8 – Partager un dossier entre deux pc avec réseau sans fil (wifi) : http://bit.ly/2bxW6t4
9 – Comment mettre un mot de passe sur un fichier (word,excel, access…),image,vidéo : http://bit.ly/2b3Mtkw
10 – Récupérer le mot de passe d’ubuntu facilement: http://bit.ly/2c395Yl
11 – Récupérer le mot de passe de windows 7,8,8 1,10 facilement: http://bit.ly/2bYhFTJ
12 – Transformer votre PC en point d’accès WiFi Windows 7, 8, 8 .1, 10 : http://bit.ly/2brX3FP
13 – Partager des fichiers entre machine physique et machine virtuelle: http://bit.ly/2cy7OsJ
14 – Comment Publier sur Plusieurs Groupes Facebook en 1 Clic : http://bit.ly/2bCbYO1
15 – Formater une clé usb avec Msdos facilement: http://bit.ly/2cLiumJ
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Notre site : http://bit.ly/2b5Aog3
Notre page facebook : www.facebook.com/jesuisinfo
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Cloud services and networking are driving the concept of digital businesses, yet traditional networking and cybersecurity architectures are far from meeting the demands of the digital business. Gartner’s “The Future of Network Security Is in the Cloud” report spells out the potential for the transformation of networking and security in the cloud, built upon a new networking and security model
The Hacker News