Blogs – Page 2 – Pentest Craft

Cloud Misconfiguration: The #1 Cause of Data Breaches (and How to Prevent It)

pentestcraftfarakh
April 13, 2026
1 Comment

Cloud Misconfiguration: The #1 Cause of Data Breaches (and How to Stop It) Ask any security researcher what causes most cloud data breaches and you’ll get the same answer over and over: it’s rarely a genius hacker breaking through advanced defenses. It’s cloud misconfiguration. An open storage bucket. A firewall rule that was never hardened. An unclosed firewall rule. This one mistake is quiet, unglamorous and completely avoidable. Which is exactly why it’s the leading cause of breaches, year after year. In this guide we’ll dissect what this problem actually looks like, why it continues to happen even at well-funded companies, and the specific steps you can take to prevent it before it costs you. What Is Cloud Misconfiguration? Cloud misconfiguration occurs when cloud resources—such as storage buckets, databases, servers, or network settings—are incorrectly configured, exposing them to unauthorized access. The cloud provider’s software is not broken. It’s a mistake in how the person or team has set up their own environment. Think of it this way: you leave your front door open. AWS, Azure and Google Cloud all offer good security tools, but those tools are only effective if configured correctly. This is the sort of gap that can emerge when that configuration step is missed, hurried, or just plain incorrect. Why Cloud Misconfigurations Are the #1 Cause of Data Breaches It’s tempting to think that breaches happen as a result of sophisticated attacks. The truth is really a lot more simple and, frankly, a little maddening. This is why it keeps topping the list: Cloud environments are always changing. Teams move quickly, new services are created, and permissions are tweaked. Speed will often outrun careful review. The default settings are not necessarily secure. A lot of cloud services are not secure by default, and if you don’t lock them down, they remain open. People get confused about shared responsibility. Cloud providers can secure the infrastructure but customers have to secure what they put in it. This gap is always misunderstood. Multi-cloud makes it worse. It is really hard to keep the same security settings across AWS, Azure and Google Cloud at the same time and small gaps get through. You will make a mistake. Even experienced engineers make mistakes, especially when facing deadlines and forgetting checklists. None of these reasons is exotic. That’s the whole point. Cloud Misconfiguration Is Not Caused by Rare Advanced Threats. It’s the accumulation of everyday oversights. Typical Types of Cloud Misconfiguration Easier to catch them if you know what the most common mistakes are. Here are the ones security teams see over and over. 1. Publicly Exposed Storage Containers That’s the classic example of a security gap in the cloud. A storage bucket, such as an AWS S3 bucket, is marked “public” instead of “private” and suddenly anyone with the link can view or download sensitive files. 2. Excessively Permissive Access Controls One of the most common types of cloud misconfiguration is giving broad permissions “just to be safe.” If users or applications are given far more access than they need, a single compromised account can lead to the exposure of huge amounts of data. 3. Systems that are not patched or are out of date A great entry point is running outdated software or dependencies within cloud environments. This is the kind of oversight that often goes unnoticed because nothing appears “broken” on the surface. 4. Logging and Monitoring Disabled If logging is off or misconfigured, a breach could go undetected for weeks or months. This mistake isn’t going to directly cause a breach, but it sure makes recovery a whole lot harder. 5. Default or weak credentials One surprisingly common issue is leaving default passwords or API keys unchanged, especially in fast-paced development environments where security is an afterthought. 6. Network settings misconfigured Open ports, missing firewall rules, and overly permissive inbound traffic configuration can all be network configuration errors. These are often the easiest to discover for attackers using automated scanning tools. The Hidden Cost of Cloud Misconfiguration The fallout from this kind of exposure extends far beyond one leaked file. Depending on how bad it is, it can lead to: Theft of customer data and legal consequences Regulatory fines under laws such as GDPR or HIPAA Reputational damage, which can take years to recover from Direct financial loss due to exposure to fraud or ransomware The loss of customer trust – one of the hardest things to get back That’s why prevention is so much more important than damage control. Once sensitive data is out there you can’t unsend it. How to Avoid Cloud Misconfiguration: One Step at a Time The good news is that cloud misconfiguration is among the most preventable security risks out there. Here’s a practical roadmap. Step 1: Complete a Full Cloud Asset Inventory What does not know you exist can’t be secured. Begin by inventorying all the cloud resources, storage buckets, databases, and services your organization uses across all providers. Step 2: Implement the Principle of Least Privilege Review all user, application and service accounts and remove access they don’t strictly need. This one step removes a huge amount of possible exposure. Step 3: Enable encryption everywhere Default to encrypting data at rest and in transit. Encryption is a key layer of protection, even in case of data exposure due to misconfiguration. Step 4. Automate configuration checks Manual reviews can’t keep up with the speed of change in cloud environments. Use cloud security posture management (CSPM) tools to scan for misconfigurations automatically and flag them in real-time. Step 5: Turn on logging and ongoing monitoring It’s recommended to enable logging for all services and configure notifications for anomalous activity. Early detection can mean the difference between a minor incident or a full-blown breach. Step 6: Standardize Configuration with Templates Use infrastructure-as-code tools to provision resources with approved, secure configurations each time, instead of manual, person-to-person configuration. Step 7: Conduct Regular Security Audits Review your cloud

Advance Cloude Security

Identity and Access Management in the Cloud

Cloud Identity and Access Management: Securing Human and Non-Human Identities Image: Digital cloud with identity icons, representing both human and non-human accounts in the cloud. The cloud security conversation for years was about employees: who has the password, who forgot to log out, who clicked the phishing link. That world is over. Most of the “identities” logging into your cloud environment today aren’t people. They are service accounts, APIs, containers, AI agents, and there are many more of them than there are humans on your payroll. And that’s precisely why Identity and Access Management has become the most critical layer of cloud security. In this guide we’ll unpack what this framework actually means, why non-human identities have become such a massive blind spot, and the practical steps you can take to secure both sides of the equation. What Is Identity and Access Management? What is Identity and Access Management (IAM)? Identity and Access Management, also known as IAM, is the collection of policies and technology that controls who or what can access your cloud resources and what they can do with them. Every time you log in, make an API call, run an automated script against your cloud environment, you’re passing through some version of this framework whether you realize it or not. At the core of this discipline is the answering of two questions for each and every request: who are you and what are you allowed to do? Get either of them wrong and you’ve opened a door that should never have been opened. Why Identity and Access Management is More Important Than Ever The cloud used to be relatively easy to secure because there were fewer moving parts. That is no longer the case and IAM strategy has had to evolve quickly to keep up. Explosion of machine identities. Most cloud environments today have many more service accounts, APIs and automated workflows than human users. AI agents are a whole new category. These systems usually need broad access to do their job and, thus, are an attractive target if left unmanaged. Remote and hybrid work eliminated the perimeter. As people log in from personal devices, home networks and shared spaces, identity has become the real security boundary. Multi-cloud creates a lot more complexity. Trying to manage a consistent access policy across AWS, Azure and Google Cloud at the same time is actually hard without a strong Identity and Access Management strategy. Credential theft is still the primary attack vector. “Once they have stolen or leaked credentials, they can walk through the front door. That’s exactly what strong identity controls are designed to prevent.” Human vs Non-Human Identities: What’s the Difference? Most people think of identity only as employees logging in. The truth is that modern Identity and Access Management has two very different categories to consider. Human Identity These are your employees, contractors and partners. They log in with user names and passwords and more and more with multi-factor authentication. Needs for access are usually fairly predictable and related to a particular role or department. Non-Human Identifiers These include service accounts, API keys, bots, containers, microservices, and even AI agents. Unlike humans, these identities often run continuously, operate at machine speed and have standing privileges that are never reviewed. Most organizations now have far more machine identities than human employees and that gap is growing every year. The problem is that many security teams still build their Identity and Access Management strategy around humans first, leaving non-human identities under-monitored and over-privileged. Cloud Identity Security Core Principles Whether the identities are human or non-human, there are a few foundational principles that are the basis of a strong identity governance program. Minimum Privilege Access Every identity, machine or human, should have the least amount of access necessary to do its job. Nothing else. Continuous Validation Access must never be a one-off check. It’s important to continuously check sessions and permissions for things like non-human identities that are operating 24/7. Scalable Identity Governance Every identity, whether it’s an employee or an automated script, should be tracked in one system, not in different tools. Top Level Authentication This principle uses multi-factor authentication for people, and short-lived, automatically rotated credentials for machines. Perform Periodic Access Reviews Permissions drift over time . Regular reviews of accounts will catch those with more access than they should have, human or otherwise. How to Implement Identity and Access Management in Cloud: 2 step by step A robust access control strategy can be put in place in time. Break it down into doable, clear steps. Step 1: Make a List of All Identities Begin with a catalog of all human users and all non-human identities in your cloud environment, including forgotten service accounts and orphaned API keys. Step 2: Enforce least privilege everywhere Check each identity and remove any excess permissions. Just this alone takes a big chunk out of your attack surface. Step 3: Bring identity management in-house Manage permissions from a single Identity and Access Management platform instead of managing permissions separately for AWS, Azure, and Google Cloud. Step 4: Implement Strong Authentication Require multi-factor authentication for all human users, and use short-lived, automatically rotated credentials for machine identities instead of static API keys. Step 5: Watch out for Non-Human Identities Treat service accounts and AI agents the same way you would treat human users. Watch what they do, notice anything strange, and lay down the law about what they can and cannot get into. Step 6: Automate Access Reviews Manual reviews can’t keep up with the speed of change in cloud environments. Automated tools can constantly flag excessive permissions and inactive accounts. Step 7: Configure Access Expiration Temporary access should really expire. One of the biggest risks in any identity governance program is one-time standing privileges that are never revisited. Step 8: Develop Your Team Even the best access management tools are worthless if the employees don’t understand the importance of access controls and how to comply. Identity & Access Management Risks

Advance Cloude Security

OSI Model Explained: A Complete Guide to All 7 Layers

The OSI Model Explained: A Complete Guide to the 7 Layers If you have started learning networking, then you would have heard about the OSI Model within the first few days. You’ll see it in every textbook, on every certification exam, and in almost every networking interview question. And with good reason: it’s the most useful mental model for understanding how data actually travels from one device to another. In this guide we’ll walk through this framework one layer at a time, explain why it still matters even though real-world networks don’t follow it exactly, and show you how to actually remember all seven layers without just memorizing a list. The OSI model is the Open Systems Interconnection model. The OSI Model, which stands for Open Systems Interconnection Model, is a conceptual model that standardizes the way in which various network protocols communicate and interact with one another. It breaks the whole process of network communication into 7 different layers . Each layer has a specific job . Think of it like a mail system . A letter passes through several stages before it arrives at its destination: it is written, put in an envelope, addressed, sorted and delivered. This is the same idea as the framework, except instead of a letter you have data moving across a network, and instead of a mail carrier each layer passes the data to the next. The International Organization for Standardization (ISO) developed it to give network engineers a common language and standard way to design and troubleshoot systems, no matter the vendor or technology used. Why the OSI Model Still Matters Today Some students ask why they need to learn this framework, since real networks run on the simpler four-layer TCP/IP model. This is why it still deserves a place in every curriculum: It is the standard troubleshooting framework. When something goes wrong, network engineers will ask, “which layer is this happening at,” and that question alone quickly identifies the issue. It establishes a common language. It is this model that makes sense of terms like “Layer 2 switch” or “Layer 3 routing.” Engineers all over the world use the same reference points. It’s on all the major certifications. CCNA, Network+ and nearly every other entry-level IT exam tests your knowledge of it directly. It simplifies a very complicated thing. It’s much easier to learn than trying to understand everything at once when you break down the network communication to 7 more manageable parts. Although real hardware and software do not break down into exactly seven discrete layers, this model is still the best teaching tool in the industry for understanding how networks work. Understanding the 7 Layers of the OSI Model As data is sent, it passes down through the layers. As data is received, it passes back up through the layers. Lets look at each layer from the one closest to the user. Layer 7 Application Layer This is the layer you actually work with. It includes the protocols that permit applications to communicate over a network, such as HTTP (web browsing), FTP (file transfers), and SMTP (email). This is the layer you are working at when you open a browser and load a website. Layer 6: The Presentation Layer This layer handles formatting, encryption, and compression so that data sent by one system is correctly understood by another. Basically it converts the data to a format that both sender and receiver understand . It also does some other stuff like SSL/TLS encryption . Layer 5: Session Layer It is responsible for the establishment, management and closure of communication sessions between two devices. It keeps track of whose turn it is to send data. It keeps sessions in sync, which is very important for things like video calls and long file transfers. Layer 4: Transport Layer This is where the data is reliably delivered. TCP and UDP are live protocols here. TCP ensures data arrives in the right order, but UDP sacrifices this guarantee for speed, which is why it’s used for live streaming and online gaming. Layer 3 Network Layer The Network Layer takes care of logical addressing and routing . It finds the best path for data to travel through multiple networks . It is responsible for getting data from one network to another . At this layer IP addresses and routers are used . Layer 2: Data Link Layer This layer is responsible for formatting data for transmission, and detecting errors, between two directly connected devices. MAC addresses and switches are found here and this layer is also where Ethernet frames are created. Layer 1: The Physical Layer Here’s the groundwork: real cables, network adapters, radio frequencies, electrical signals. This is simply the transmission of bits, ones and zeroes, over a physical medium. Remembering the Layers of the OSI Model Most students use a mnemonic to cement the order in memory. One popular one going down from Layer 7 to Layer 1 is: “All People Seem To Need Data Processing” All = Application People = Presentation seem = session To = Transport Need = Network DataLink = Data Processing = Physical Choose your own poison or make your own. Whatever floats your boat. The exact wording of the mnemonic is much less important than the order. OSI Model vs TCP/IP Model: Significant Differences A lot of beginners get confused between these two so here is a clear side by side comparison. Factor TCP/IP Model This Framework Number of layers 4 layers 7 layers Origin ISO theoretical standard development Developed by the U.S. Department of Defense, based on actual protocols Usage Instruction and Troubleshooting Guide What real-world networks actually run Application, Presentation, Session Equivalent to Layer 7-5 Combined into a single Application layer Equivalent to Layer 4 Transport Transportation Equivalent of Layer 3 Network Internet Layer 2-1 equivalent Data Link, Physical Combined into one Network Access layer Real World Examples of OSI Model Knowing the layers in theory is one thing.

Devops

Types of Computer Networks Explained: LAN, WAN, MAN, and More

Computer Network Types LAN, WAN, MAN & Others Demystified If you are studying IT, preparing for a CCNA exam or just trying to understand how the internet actually connects your laptop to a server half way across the world, you have probably heard the term “network” a hundred times without a clear picture of what it means. This guide simplifies the major types of computer networks and explains them in plain language so that you walk away knowing exactly what a LAN, WAN, MAN and a few other network types are – and when each one is actually used. What is a network computer? A computer network is simply a group of two or more devices – computers, servers, printers, phones – that are interconnected so they can share data and resources. The connection can be a physical cable or a wireless signal, and it can be between one room or an entire continent. There are many different types of computer networks because “connecting devices” can mean very different things depending on the distance involved, the number of users, and the purpose. Both a home Wi-Fi setup and the network that runs a bank’s ATM system are networks, but they are built and maintained in very different ways. Why Knowing the Different Types of Computer Networks is Important Knowing about the different types of computer networks isn’t just exam trivia — it’s the foundation of nearly every IT career path, from network administration to cybersecurity to cloud engineering. Certifications such as CCNA and CCNP directly test this knowledge, as every troubleshooting decision, every security policy, and every infrastructure design starts with knowing what kind of network you have. Main Types of Computer Networks Geographic size is the easiest way to understand the different types of computer networks, and computer networks are usually classified by geographic size. This is what you will most often see, from smallest to largest. Local Area Network (LAN) A LAN is a network confined to a small physical space such as a single office, a home, a school lab, or one floor of a building. This is the most common of all the types of computer networks, as almost every home and business has one. A LAN is a network owned and operated by one company or person, and it typically uses Wi-Fi or Ethernet connections. Because the devices are close together, such as sharing files between office computers or connecting to a local printer, LANs have very high speed and low latency. To set up a network you will typically need a router, a switch, and network cabling or a wireless access point. WAN Wide Area Network A WAN connects devices over large geographical areas such as cities, countries, or continents. The biggest example of this type of network is the internet itself, but private companies also build their own wide area networks (WANs) to connect branch offices in different locations. Unlike a LAN, a WAN typically uses third-party infrastructure such as leased telecom lines, satellite links, or fiber-optic backbones since no single organization owns the cables stretching across entire countries. Speed and latency vary greatly depending on the type of connection. WANs also require more complex routing, security and management than a LAN. Of all computer network types, WANs are the type that enables remote work and worldwide business operations. MAN (Metropolitan Area Network) A MAN is somewhere in between a LAN and a WAN – it covers a city or a large campus, interconnecting multiple LANs in that area. City governments, multi-campus universities, and cable TV providers often use MANs to connect buildings without relying on the entire public internet. MANs are usually owned by one organization or an Internet service provider that provides metropolitan coverage. MANs use high speed fiber optic connections. It is not a very known member of the family of network types, but it has an important role in the urban infrastructure. PAN (Personal Area Network) PANs are the smallest network, centering on a single person’s immediate devices — say, a phone and wireless earbuds, a smartwatch or a laptop connected over Bluetooth. Its range is usually only a few meters. Most modern scenarios have PANs that are wireless by default and is used all the time without people knowing that it is technically a network. CAN (Campus Area Network) A CAN links together many LANs over a small geographical area, such as a university or corporate campus, but not across a city like a MAN. It’s basically a bridge between LAN scale and MAN scale. It’s common for educational institutions where several buildings need to share resources like a central server or library database. SAN (Storage Area Network) * A SAN is a high-speed, special-purpose network that connects servers to storage devices that is independent of the normal data network. SANs are used by businesses for centrally storing data, backups and disaster recovery because they deliver fast access to data at the block level without slowing down the main network. WLAN (Wireless Local Area Networking) A WLAN is just a LAN that connects devices using wireless technology (Wi-Fi) instead of physical cables. The convenience of not having to run cables to each device has made the setup the default in homes, cafes and offices, although it usually sacrifices a bit of speed and security compared to a wired LAN. Difference Between LAN and WAN and MAN Feature LAN MAN WAN Coverage area Single building/room City-wide Country/global Ownership One organization Single entity and/or ISP Several providers Speed Very fast Fast Varies (often slower) Setup cost Low Medium High Example Office network City gov network The net Seeing these three types of networks together makes it easier to understand why organizations use different types of networks depending on how far their data needs to travel. Computer Network Types by Architecture Besides geographical classification, network types can also be classified by the way devices communicate with each other: Client-Server Network: Clients request resources from

Advance Cloude Security

IP Subnetting Made Simple: A Step-by-Step Guide for Beginners

IP Subnetting Made Easy – A Novice’s Guide If you have ever opened a networking textbook, and run into a wall of binary math on the first page about subnetting, you are not alone. IP subnetting is the networking topic that scares the bejeebies out of beginners. But it’s really pretty simple once someone explains it in plain English rather than pure math. This guide will take you step by step, and with a real world example, so you can calculate subnets with confidence for your CCNA studies or your first office network. What is IP Subnet? IP subnetting is the technique of dividing a large network into smaller, more manageable sub-networks called subnets. Instead of having all devices on one flat network, subnetting lets you carve up that address space into logical chunks – one for each department, floor or purpose. Picture a company building with an open floor plan, and then the same building with private offices. Both are the same size in terms of people but breaking it down into rooms makes it much easier to manage where people go, control traffic and keep things organised. That’s precisely what subnetting does for a network. The significance of IP subnetting in networking Without subnetting, every device on a network is part of one big broadcast domain. As the number of devices on the network grows, this quickly becomes slow, messy, and insecure. Subnetting solves this by: Reduce network congestion by limiting broadcast traffic to smaller groups Improve security by isolating departments or types of devices from each other More efficient allocation of IP addresses and less waste of large address blocks Being able to localize problems to a particular subnet to aid troubleshooting This is one of the primary reasons why IP subnetting is one of the first practical skills tested in CCNA and other networking certifications – nearly all real-world network design decisions are based on it. Key terms you should know before There are some terms that come up over and over here, so it is helpful to define them clearly before we get into the steps: IP Address: A unique number assigned to each device connected to a computer network (e.g. 192.168.1.10) Subnet Mask: A number that divides the network part from the host part of an IP address (e.g. 255.255.255.0) CIDR Notation: A short form of a subnet mask, written as a slash followed by a number (e.g., /24) Network ID: Address that identifies the subnet, not a particular host Broadcast Address: This is the address used to send data to all devices on that subnet at once Host: Any device, such as a computer or printer, that has been assigned an IP address on the subnet How to Subnet IP Addresses (Step by Step) Here’s the real deal broken into five manageable steps. Step 1 — Know the IP Address Structure IPv4 address is 32 bits long, split into four groups known as octets (e.g. 192.168.1.10). Each octet can be from 0 to 255. An IP address is divided into two parts: the network part, which identifies the general network, and the host part, which identifies the particular device. Step 2 — Find the Subnet Mask The subnet mask tells you exactly where the network part ends and the host part begins. For example, a subnet mask of 255.255.255.0 (or /24 in CIDR notation) means that the first three octets are used for the network and the last octet is used for host addresses. This is the one number that the whole of every netting calculation is based on. Step 3 — Determine the Number of Subnets and Hosts Knowing the subnet mask, you can determine how many subnets and usable host addresses the subnet mask creates. The general formulas are Number of subnets = 2^ (borrowed bits) Usable hosts per subnet = 2^(remaining host bits) – 2 The “minus 2” is because of the network ID and the broadcast address which cannot be assigned to actual devices. This is where the bulk of the math anxiety actually happens. When you memorize the formula, it becomes rote. Step 4: Locate the Subnet Ranges Once you have worked out the number of subnets, you then need to work out the range of each subnet. This includes the network ID of the subnet, the usable IP range of the subnet, and the broadcast address of the subnet. It is this part of the process that makes the math practical to assign to devices in reality. Step 5. Assign IPs to Devices Then you assign individual IP addresses from the usable range of each subnet to devices, servers or interfaces, keeping the network ID and broadcast address free. This is where the entire subnetting process becomes a real working network design. Example Walkthrough of IP Subnetting Let’s walk through a simple real example. Imagine you have the network 192.168.1.0/24 and want to cut it into 4 smaller subnets. A /24 network has 8 host bits (32-24=8). To make 4 subnets you need to borrow 2 bits (2^2 = 4 subnets), so the mask changes from /24 to /26. Your new subnet mask is 255.255.255.192. This gives you 4 subnets with 64 addresses ( 2^6 = 64 ) each. Each subnet has 62 usable host addresses (2 are reserved for the network ID and broadcast address). The four resulting subnets are: 192.168.1.0/26 (usable range .1 to .62) 192.168.1.64/26 (Usable range .65 – .126) 192.168.1.128/26 (usable range: .129 to .191) 192.168.1.192/26 (usable range .193 through .254) That’s the whole process in action — one network address turned into four independent, organized subnets, each of which can hold 62 devices. Top Mistakes to Avoid in IP Subnetting When learning this skill, beginners tend to make the same handful of errors: forgetting to subtract 2 hosts for network ID and broadcast address Mixing up subnet mask and default gateway – they are two totally different things Miscoding borrowed bits, affecting all subsequent calculations IP conflicts across