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Showing posts with label Cyber Threats Risk. Show all posts

Understanding the Domain Name System (DNS): How It Works and Why It Matters


The Domain Name System (DNS) serves as a critical element of the internet’s infrastructure, acting like a phone book that translates human-friendly domain names into the numerical IP addresses that computers use to communicate. Without DNS, accessing websites would be far more complicated, requiring users to remember lengthy strings of numbers instead of simple names like “google.com.” When you enter a website URL into your browser, the DNS process begins. This request, known as a “DNS query,” first goes to a DNS resolver—typically provided by your Internet Service Provider (ISP) or a third-party DNS service like Google Public DNS or Cloudflare. 

The resolver acts as an intermediary, starting the process to find the corresponding IP address of the domain name you’ve entered. The DNS resolver contacts one of the 13 root servers that make up the top level of the DNS hierarchy. These servers don’t hold the IP address themselves but provide information about which “Top-Level Domain” (TLD) server to query next. The TLD server is specific to the domain extension you’ve entered (e.g., “.com,” “.net,” “.org”) and points the resolver to the authoritative name server responsible for the particular website. The authoritative name server then provides the IP address back to the resolver, which, in turn, sends it to your browser. 

The browser then connects to the web server using this IP address, loading the website you want to visit. This process, though complex, happens in milliseconds. Security is a vital aspect of DNS because it is a frequent target for cyberattacks. One common threat is DNS spoofing, where attackers redirect traffic to fraudulent websites to steal data or spread malware. DNS hijacking is another risk, where hackers manipulate DNS records to divert users to malicious sites. These threats emphasize the importance of DNS security protocols like DNS over HTTPS (DoH) and DNS over TLS (DoT), which encrypt DNS requests to prevent interception by malicious entities, thus protecting users’ data and privacy. 

Switching to a third-party DNS service can enhance your internet experience in terms of speed, reliability, and security. Services like Google Public DNS, OpenDNS, or Cloudflare’s 1.1.1.1 offer faster query response times, better privacy protection, and can help circumvent geographical restrictions imposed by ISPs. These alternatives often provide built-in security features, such as blocking malicious sites, to offer an extra layer of protection. 

DNS is the backbone of internet browsing, seamlessly converting domain names into IP addresses. By understanding its role and the importance of security measures, users can better appreciate how DNS keeps the internet functional and secure. Whether ensuring that websites load correctly or protecting against cyber threats, DNS plays an indispensable role in our everyday online activities.

Continuous Threat Exposure Management: A Proactive Cybersecurity Approach

 

Continuous Threat Exposure Management (CTEM) represents a significant shift in cybersecurity strategy, moving beyond the limitations of traditional vulnerability management. In an era where data breaches and ransomware attacks remain prevalent despite substantial cybersecurity investments, CTEM offers a comprehensive approach to proactively identify, prioritize, and mitigate risks while ensuring alignment with business goals and compliance requirements. 

Introduced by Gartner in July 2022, CTEM is a continuous program that evaluates the accessibility, exposure, and exploitability of an organization’s digital and physical assets. Unlike reactive vulnerability management, which focuses on patching known vulnerabilities, CTEM addresses potential threats before they escalate into major security incidents. It employs various tools, such as Penetration Testing as a Service (PTaaS), attack surface management (ASM), automated pen-testing, and red-teaming, to maintain a proactive defense posture. 

At the core of CTEM is its iterative approach, emphasizing integration, continuous improvement, and communication between security personnel and executives. This alignment ensures that threat mitigation strategies support organizational goals, thereby enhancing the effectiveness of security programs and fostering a culture of cybersecurity awareness across the organization. The CTEM process, as defined by Gartner, involves several stages: scoping, discovery, prioritization, validation, and mobilization. Scoping identifies the organization’s total attack surface, including internal and external vulnerabilities. 

Discovery uses ASM tools to detect potential threats and vulnerabilities, while prioritization focuses on assessing risks based on their likelihood of exploitation and potential impact. Validation confirms the existence and severity of identified threats through techniques like red-teaming and automated breach-and-attack simulations. Mobilization then implements remediation measures for validated high-priority threats, ensuring that they are aligned with business objectives and effectively communicated across departments. 

Exposure management, a critical aspect of CTEM, involves determining the attack surface, assessing exploitability, and validating threats in a continuous cycle, thereby minimizing vulnerabilities and enhancing security resilience. CTEM and exposure management are crucial for fostering a proactive security culture and addressing cybersecurity challenges before they escalate. By leveraging existing security tools and processes, organizations can integrate CTEM into their operations more efficiently, optimizing resource usage and complying with regulatory requirements. CTEM focuses on outcome-driven, business-aligned metrics that facilitate informed decision-making at the executive level. 

It recognizes that while complete risk elimination is impossible, strategic risk reduction aligned with organizational objectives is essential. By prioritizing vulnerabilities based on their impact and feasibility, CTEM enables organizations to navigate the complex cybersecurity landscape effectively. CTEM offers a pragmatic and systematic framework to continuously refine priorities and mitigate threats. By adopting CTEM, organizations can proactively protect their assets, improve resilience against evolving cyber threats, and ensure that their security initiatives align with broader business imperatives.

Unveiling the Underbelly of IoT: An In-Depth Analysis of Hacking Risks

 


In terms of versatility, the Internet of Things (IoT) is a technology that is easily one of the most versatile technologies in the world today. In the era of the internet, the network connection capacity is increasing and the number and diversity of connected devices are enabling the IoT to be scaled and adapted to meet the changing needs of the user. Among the industries the Internet of Things (IoT) has revolutionized are several sectors such as food production, manufacturing, finance, healthcare, and energy. 

Furthermore, it has led to the development of smart buildings, homes, and even cities at the same time. Generally, IoT attacks are malicious attempts to exploit vulnerabilities in devices connected to the internet, for example, smart homes, industrial control systems, and medical devices. There is a possibility that hackers may gain control of the device, steal sensitive information from it, or use the device as part of a botnet to accomplish other malicious acts. 

The term "IoT hacking" is frequently used by researchers to describe the process of removing gadgets, examining their software, and learning how they work. However, there are more challenges involved with IoT hacking than just technical ones. Cyber threats are evolving to reveal a world of virtual battles that go on behind the scenes. Hackers are increasingly targeting IoT (Internet of Things) and OT (Operational Technology) systems, which are extremely important for the future. 

In addition to tech gadgets, they are also the foundation for many services that keep us running in our society and economy. Hackers are not just messing with machines when they target these systems, they are threatening the very services that nations rely on every day. IoT devices can introduce several new and preventable attack vectors when not properly secured. Researchers who work in cybersecurity keep showing that critical systems are being attacked more frequently than they realize.

The risks are not that complicated to identify and understand, for example, operating systems that are not patched or insecure passwords that make it easy for brute force attackers to find them. A security team must take into account both simple and complex risk factors specific to the world of IoT to manage the operational reliance on these devices in virtually every industry. There are a few security risks and attacks associated with IoT that people should be aware of. 

Botnets 

Since IoT devices have no built-in security mechanisms, they are particularly vulnerable to malware attacks compared to more advanced machines and computers that have these security mechanisms. In general, they are machines that are primarily focused on functionality, which means they usually do not provide the same level of storage space or processing power that computers offer. In light of this, attackers tend to view IoT devices as a low-hanging fruit attack vector that they can easily attack. 

IoT devices should be secured properly to protect them from botnets, and to prevent them from getting into the wrong hands. Companies must keep a plan in place to detect and respond to DDoS attacks, as well as to change default passwords, keep firmware up to date, and limit access to the device. 

Ransomware 

While IoT devices do not typically store valuable data locally, that doesn’t mean they are immune to ransomware attacks. Instead of threatening an organization with a ransom payment, ransomware attacks on IoT devices usually disable their core functionality instead of stealing information. Possibly the best way to accomplish that is to shut down the operation of an industrial device, without which fundamental business operations would not be possible, or to stop the recording of the feed being monitored by a camera or microphone. 

Several security flaws in IoT devices can affect companies. One of the researchers' keen-eyed researchers discovered that a big security hole existed in a popular broadcasting device that sent audio over the internet. It's important to note that the researchers did the right thing, and notified the device manufacturer that the problem was caused by an OS Command Injection, which is a serious issue because hackers can take control of a device by doing so. This was done by researchers who did the right thing since it was an OS Command Injection. 

There was a problem with the software on the device, and they were trying to fix it by updating it so that someone from the outside would not be able to exploit it anymore. Companies often take quick measures to fix security gaps when they find out about them. The problems these companies have faced are similar to putting band-aids on a wound without actually treating it. 

Many people have witnessed how a company patched a device so that it looked safe from the outside, but the same problems were still there once people got inside. In some cases, fixes do not solve the problem. They just hide it and do not take care of it. As a result, it is as if one locks the front door and leaves the back door wide open at the same time. 

In today's digital world, ensuring the safety of the IoT world cannot be done by one individual. For this to work, it needs to be a team effort between the manufacturers, security experts, and even the government itself. The biggest priorities should be setting strict security rules, being open about the problems they find, and helping all of the people in the organization understand how they can be protected. 

As people move through the tricky territory of this online and offline world, they must do a lot more to look after the two worlds simultaneously to get the best outcome. To make sure that their connected devices are protected and managed effectively, they must be proactive and take an all-in approach.