Quels sont les moyens innovants de détecter et de prévenir les menaces internes à la sécurité de votre réseau ?

💡 Adopting Zero Trust is paramount in today's cybersecurity landscape. It's more than a strategy; it's a necessity for safeguarding assets. 🔒 Identity Verification Mandatory continuous verification enhances security by ensuring only authorized access to network resources. 🛡️ Micro-Segmentation Dividing networks into small zones increases security. If a breach occurs, it's contained, reducing overall impact. 🔍 Behavior Monitoring Analyzing user behavior detects anomalies early, preventing potential insider threats before they escalate. 📌 Zero Trust is not just a policy but a comprehensive approach to prevent data breaches and enhance network security.

Why did the cybersecurity expert bring a mirror to work? To catch those sneaky insiders reflecting on their actions before they strike. Certainly! One effective approach is implementing behavior analytics tools to detect abnormal patterns in user activity, flagging potential insider threats before they escalate. Additionally, fostering a culture of trust and communication within the organization can empower employees to report suspicious activities, creating a collective defense against internal security breaches.

Insider threats are more challenging than external cyberattacks because: Insiders have legitimate access to your infrastructure Insiders know (or can easily find out) where you store your most valuable data Insiders know your cybersecurity system from within, which means it’s easier for them to bypass it. Depending on a business’s need, this type of software can collect various data, including: Online activity — visited websites, email exchanges, downloaded and uploaded files and applications, and online search history. General activity — manipulation of files and data, launched applications, connected USB devices.

To detect and prevent insider threats, innovative methods include using software that tracks how users behave on the network. This software uses advanced algorithms to spot any unusual activity that might signal a security problem. Another is to analyze users' actions over time to see if there are any unexpected changes in behavior, like accessing files they normally wouldn't touch. It's also important to educate employees about cybersecurity and only give them access to the files and systems they need for their jobs. Regular checks on security systems and actively looking for any possible threats can also help stop insider attacks before they happen.

Let's step outside the usual tech-heavy solutions. Think behavior. Unusual login times, downloading massive files, grumpy attitude shifts – these can be red flags. Train employees to spot these and have a clear reporting system in place. Tech-wise, get granular! Least-privilege access means giving folks only the access they absolutely need to do their jobs. Monitor network activity for anomalies – that odd spike in data leaving the building could be a data heist in progress. Finally, don't ignore disgruntled employees. Offer resources, address grievances. A happy worker is less likely to turn rogue.

I have discovered that using Artificial Intelligence (AI) and Machine Learning (ML) is one of the most inventive techniques to detecting and avoiding insider threats. Artificial intelligence (AI) systems are able to detect odd patterns of activity that might point to insider risks, including illegal access or strange data transfers, by examining enormous volumes of data. By continually learning and adapting, machine learning (ML) models can become more adept at identifying even minor abnormalities, and can improve network security against insider threats.

Usar Inteligência artificial e aprendizado baseado em máquina deve ser de forma consciente atrelado com os princípios de OWASP para amenizar as vulnerabilidades que possam exisitir

O uso da Inteligência Artificial na detecção de ameaças pode ser incrivelmente útil para identificar padrões suspeitos visto que sua capacidade de processamento permite a análise de uma quantidade gigantesca de padrões e comportamentos, dessa forma proporcionando uma otima abordagem na identificação de ameaças.

Using AI and ML in network security allows for the analysis of vast data volumes to detect patterns, trends, and anomalies indicating insider threats. These technologies automate and enhance threat detection, response, and remediation processes. By incorporating AI and ML, organizations can significantly improve the intelligence, efficiency, and accuracy of their network security measures.

Back in 2016 or so, to detect insider threats I would need to run a program with several technologies: Fireeye, Tanium, Darktrace etc and inputting data into SIEM. Now in 2023, we're experimenting with Copilot (!) through the integration with Sentinel and Defender. Caveat we move pretty much the whole IT estate to O365.

By harnessing user and entity-based analytics, companies can proactively detect suspicious behavior within their network. For instance, leveraging SIEM capabilities for event correlation can unveil concerning patterns such as a departing employee suddenly uploading data to external platforms like GitHub or unauthorized external storage, abnormal spikes in data downloads, or unusual email communications to personal accounts. By embracing these advanced analytics, organizations can effectively mitigate risks associated with insider threats and unauthorized data exfiltration, bolstering their overall cybersecurity posture.

Implementing User and Entity Behavior Analytics (UEBA) leverages data science and statistical modeling to establish normal behavior baselines and detect deviations signaling insider threats. It identifies risky insiders by analyzing actions and contexts, helping prioritize and investigate critical threats while offering insights for remediation.

To move to Data-Centric Security, a company needs to have a solid foundation of data classification. Very easy to jump straight to auto-labelling which Microsoft was really pushing as a feature of their E5 licences. However, it didn't work in an IT estate where it was complicated (e.g. a mix of on-prem and thin clients). The PoC was scrapped.

Traditional methods often overlook critical access controls, leaving gaps that can be exploited by malicious actors. Instead, organizations should prioritize the principle of least privilege, granting access only as necessary rather than by default. Modern tools like Azure Information Protection and Information Rights Management offer robust encryption capabilities, ensuring that data remains inaccessible to unauthorized parties. Additionally, implementing robust identity and access management solutions further fortifies defenses, allowing organizations to monitor and control data access with precision.

Adopting data-centric security focuses on safeguarding the data itself with encryption, masking, and tokenization, ensuring protection at rest, in transit, and in use. This approach enhances prevention against insider threats, enforces access controls, tracks data lineage, and facilitates auditing of data activities, prioritizing the security of the data over the perimeter or devices.

Absolutely, data-centric security marks a pivotal shift in our approach to cybersecurity. By focusing on securing the data itself, we're able to offer robust protection regardless of where the data resides or travels. Encryption, masking, and tokenization are vital tools in ensuring that data remains incomprehensible and useless to unauthorized users. Moreover, stringent data access controls, coupled with comprehensive tracking of data lineage and activity audits, are instrumental in preventing insider threats. This method not only safeguards the data but also provides valuable insights into how data is used and accessed, enabling proactive security measures. #DataSecurity #Cybersecurity #InsiderThreatPrevention

In today's digital landscape, cybersecurity hinges on awareness, recognizing that people are often the weakest link in the chain. Streamlining cybersecurity awareness courses has become imperative for organizations. Fortunately, the market now offers various simulation tools designed to recreate attack scenarios, enabling the identification of vulnerable users and gaps in security protocols. By leveraging these tools, organizations can pinpoint areas for improvement and enhance user awareness effectively.

A typical example is HR employees sending remuneration information outside of the corporate. In my experience (and to be compliant with work councils and all the privacy laws), make sure that you do awareness, education, before escalating to "hall of fame" and "hall of shame". It takes a while, but in the end "what gets measure gets done".

Training and educating employees raises security awareness, teaching them to protect credentials, recognize suspicious activities, and comply with security policies. This effort helps prevent insider threats, reducing human errors and negligence that compromise network security.

Adopting a holistic cybersecurity strategy is crucial. Beyond technical defenses, fostering a security-aware culture among employees is key. Training programs should not just inform but engage, teaching employees to protect data, recognize threats, and adhere to security policies. Implementing User and Entity Behavior Analytics (UEBA) further strengthens defenses by identifying anomalous behavior that may signal a threat. Combining these with advanced AI and Machine Learning for real-time threat detection, and applying Zero Trust principles and Data-Centric Security ensures a robust, multi-layered defense system

One thing I found helpful was determining the difference between what we were good at as a security organization and what we were not good at and asking ourselves if it was better to build missing capability internally or consider outsourcing it instead. A Security Operation Center (SOC) is a good example of something that may be a candidate for outsourcing if that capability is not already present and effective.

Absolutely! Collaboration with other organizations is crucial in enhancing network security against insider threats. Sharing best practices and resources not only allows for benchmarking but also fosters innovation through collective intelligence. It's a strategy that goes beyond individual efforts, leveraging wider expertise and tools for better threat detection and prevention. Additionally, coordinating security measures with partners strengthens trust and reputation across the ecosystem. Embracing collaboration is a powerful approach to building a more resilient and secure digital environment. #NetworkSecurity #Collaboration #Resilience

Insider threats will always be the greatest security concern for any company in any industry because it's the one threat that is truly unstoppable if someone is bent on carrying out a malicious event. In my opinion, a company can have every administrative, technical, & physical control there is and a motivated inside threat actor will find ways to bypass the controls. An area that wasn't pointed out in the comments that many times will help prevent insider threat is the organization's culture. People who feel welcomed and consider themselves part of the team develop loyalty to the business. Loyal employees who feel cared for do not usually go out of their way to negatively impact the company they work for. TLDR: Care for your team mates.

Many organizations employ poor manual processes for the management of user privileges. With plenitude systems and applications to manage, a lack of centralized control, highly manual processes, and an unclear understanding of the necessary access required for each role, managing user privileges is inadequate. One way to address this is to automate the provisioning of the user lifecycle. Another strategy is the implementation of PBAC. This means having solid, well-defined policies and knowing which access privileges each role requires. As organizations grow and evolve, the right IGA solution can allow for more efficient changes and decrease risk by focusing on policies and assignments rather than roles.

The practice of building out our perimeter and making it taller and wider to keep the threat actors out is a requirement still today, but with the total overall threat landscape evolving and changing how it has....the wall nor legacy tools are enough. To have a solid Insider Risk Mgmt program, companies need to have a NextGen Human Focus platform in place. These IRM platforms don't need to wait for a trigger/compromise to alert because they understand human behaviors and their interaction with data, machines, apps & other humans. As a result, near real time high fidelity alerts are provided with little to no false positives; we need to know when there is malicious InT activity happening while it is in the act of...too late otherwise.

Insider attacks are a serious concern. It's more important to detect before prevent. Besides, the measures mentioned above, one effective way to discover insider attackers is by using a Network Detection & Response tool. However, it is not enough to simply deploy & analyze such a tool – it is crucial to establish a metric for measuring its effectiveness. For example, monitoring network traffic events when critical resources/devices/assets are accessed, or detecting when service accounts elevate privileges. The metric should constantly evolve to stay effective. As a cybersecurity professional, I believe integrating this technology with SIEM/SOAR to enable centralized monitoring would be an effective control for detecting insider attacks.

A lot of times there isn't a full segmentation of the network from externally managed devices. Physical access to the onsite infrastructure should be completely segmented away. This is where micro segmentation of the environment really needs to be considered. With things such as coffee machines that will re-order the coffee for you, these types of devices provide an attack surface that is not thought about because it flies really below the radar. Egress points for appliances that report out are also ingress points for attackers.