{"id":8639,"date":"2026-07-03T07:10:57","date_gmt":"2026-07-03T07:10:57","guid":{"rendered":"https:\/\/cybersecurityinfocus.com\/?p=8639"},"modified":"2026-07-03T07:10:57","modified_gmt":"2026-07-03T07:10:57","slug":"what-is-network-data-loss-prevention-dlp","status":"publish","type":"post","link":"https:\/\/cybersecurityinfocus.com\/?p=8639","title":{"rendered":"What is Network Data Loss Prevention (DLP)?"},"content":{"rendered":"
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Defining Network Data Loss Prevention (DLP)<\/h2>\n<\/div>\n
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Network Data Loss Prevention (DLP) software\u202fmonitors,\u202fdetects,\u202fand potentially blocks sensitive data exfiltration while the data is in motion.\u202fNetwork DLP\u202fprevents the transfer of critical information outside of a corporate network and is mandated as a compliance requirement in some regulated industries to ensure that measures taken by organizations\u202fare able to\u202fdemonstrate\u202fdue care in avoiding loss or theft of confidential\/sensitive data.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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What Is Network DLP and How Does It Work?<\/h2>\n<\/div>\n<\/div>\n
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Network DLP solutions are designed to\u202fmonitor, detect, and prevent unauthorized data transfers across a network. It acts like a digital security scanner, but with more advanced capabilities.<\/p>\n<\/div>\n<\/div>\n

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Here\u2019s\u202fa breakdown of Network DLP’s functionalities:<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tTraffic Monitoring: Constantly scans the traffic, to make it possible to identify data movements. It is, in fact, one important aspect of network security with DLP<\/a>. It can monitor data packets crossing the network and identify patterns that could suggest unauthorized data transfers.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tContent Inspection: Involves inspecting data packets for sensitive data such as social security numbers, credit card information, or intellectual property. Content inspection can be applied to any form of data: email, files, and attachments.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tPolicy Enforcement: It allows policies to be set up so that they may automatically respond to potential data breaches, constraining data transfers, encrypting data, or sending alerts for further follow-up investigation. These concede that any activity in violation of preset regulations is alerted immediately and taken up by the hand.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tContextual Analysis: Analyze the contexts in which data is moved with the aim of helping establish legitimacy. For example, sending a document with customer information to one of your trusted partners may be a normal and allowed move but will raise an alert if such a document is moved to a personal address. This helps in differentiating legitimate data transfers from those that are suspicious.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tResponse Mechanism: Offers mechanisms for responding to policy violations, terminating transfers, encryption, and sending alerts. This, in turn, ensures that there is an immediate course of action to be adopted to stop the breach of data<\/a>.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tReporting and Analytics: Develops meaningful reports that are used in the analysis of data traffic patterns and identifies potential security threats, in the process beefing up data loss prevention monitoring in general. These reports help in providing insights into how data really flows in an organization, fine-tuning the security policies and practices.<\/span><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Why is Network Data Loss Prevention (DLP) Important?<\/h2>\n<\/div>\n<\/div>\n
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Network DLP capabilities are important in compliance support, intellectual property protection, and enhancement of security awareness among employees. Network DLP provides one with visibility and controls that detect and prevent accidental data loss<\/a> and stop the malicious insider who intends to exfiltrate data from the corporate network.<\/p>\n<\/div>\n<\/div>\n

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How Top Industries Can Prevent Costly Data Breaches? – eBook<\/div>\n<\/div>\n<\/div>\n
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\n\t\t\t\t\t\t\t\t\t\tThe biggest challenges in securing regulated and sensitive data<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tKey DLP compliance requirements<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tModern DLP technologies that help prevent costly security incidents<\/span><\/p><\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\tDownload Now<\/span>
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Organizations use network DLP capabilities to support the following use cases:<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tSupport regulatory compliance efforts around data protection where network DLP is used to detect and prevent compliance policy violations around data movement \u2013 and ultimately preventing sensitive data<\/a> from being transferred out from the corporate network.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tProtect intellectual property from being exfiltrated from the corporate network.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tVisibility of sensitive data and augment employee security awareness. Unintentional policy violations can result in a notification to the user with an explanation to help train proper behavior.<\/span><\/p><\/div>\n<\/div>\n

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Fidelis Network\u00ae\u202fData Loss Prevention<\/a>\u202famplifies these capabilities by offering deep session inspection and actionable insights into data movements. Its technology ensures enhanced protection and compliance for organizations.<\/p>\n<\/div>\n<\/div>\n

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What Should You Look for in a Network Data Loss Prevention (DLP) Solution?<\/h2>\n<\/div>\n<\/div>\n
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While detection is clearly\u202fan important role\u202fin network DLP, being able to prevent sensitive data from leaving the network is the\u202fultimate goal.<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tConduct session-level (not packet-level) inspection of network traffic across all 65,535 network ports. Given most human-readable data in an enterprise is not in plain text formats, visibility requires knowledge beyond an individual packet for network DLP decisions.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tProvide visibility into the protocols, channels, and applications in use on the network. Network data loss prevention solutions need to understand a wide variety of network traffic to determine how people are communicating and extract information for analysis.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tAbility to extract enterprise human-readable content and related metadata contained within sessions as well as any attachments and compressed files for analysis.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tProvide multiple sophisticated content analysis technologies to detect sensitive and\/or protected information for accurate content recognition.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tProvide a policy engine to implement rules to determine network sessions that violate policy. Policy-based enforcement maps rules to an organization\u2019s content disclosure or network use policies.<\/span><\/p><\/div>\n<\/div>\n

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Benefits of Network DLP<\/h2>\n<\/div>\n<\/div>\n
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Here are the benefits of a network DLP solution:<\/strong><\/em><\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tComprehensive Data Protection: This feature ensures that the sensitive data is protected from unauthorized access and exfiltration<\/a>.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tRegulatory Compliance: Real-time compliance with PCI DSS and other related regulations is achieved by the surveillance of data flows.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tImproved Security Posture: It detects and mitigates potential threats.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tEmployee awareness: Regularly notify and clarify policies which helps in increasing employee awareness on best practice to handle data.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tIntellectual Property Protection: Prevents unauthorized access<\/a> and distribution of intellectual property.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tReal-time Threat Detection<\/a>: Detects suspicious activities happening in real-time and takes immediate actions.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tPolicy Enforcement: Automates the enforcement of data protection policies, minimizing human error.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tCost Savings: No data breaches mean no costs incurred from losing data or lawsuits.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tAdaptable: Keeps up with changing data landscapes\u2014including cloud and remote work environments.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tIntegration with Other Security Tools: Enhances security strategy through integration with other tools.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tFewer Insider Threats: Identifies and limits insider threats<\/a> by monitoring all activities of employees.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tData Classification<\/a>: Categorizes the data with respect to sensitivity and applies protection measures accordingly.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tIncident Response Support: Provides activity logs and reports for incident response<\/a> support, if an incident has occurred.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tUser Behavior Analytics: Detects anomalies<\/a> and potential security incidents through behavior analysis.<\/span><\/p><\/div>\n<\/div>\n

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What are the key threats that Network DLP can Defend Against?<\/h2>\n<\/div>\n<\/div>\n
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Network DLP fortifies your cyber territory against a variety of threats that could result in the loss of confidential data. Here are some of the key areas it helps protect:<\/p>\n<\/div>\n<\/div>\n

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1. Emerging Threat Landscapes<\/h3>\n<\/div>\n<\/div>\n
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In the evolving digital ecosystem, network DLP is more important than ever. As more people are working from home and are opting for cloud-based services, they are facing more advanced cyber threats. Companies need strong data lose prevention measures to protect their data from being lost or stolen over networks.<\/p>\n<\/div>\n<\/div>\n

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2. Malicious Insider Threats<\/h3>\n<\/div>\n<\/div>\n
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Sensitive information may be stolen or leaked by resentful workers or those acting maliciously. Data Loss Prevention Monitoring staff behavior and identifying questionable efforts to transmit sensitive data are two ways that network DLP might be helpful.<\/p>\n<\/div>\n<\/div>\n

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3. Cloud Misconfigurations<\/h3>\n<\/div>\n<\/div>\n
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To prevent sensitive data from being unintentionally exposed due to misconfigurations, network based DLP can assist by monitoring data flows to and from cloud services.<\/p>\n<\/div>\n<\/div>\n

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4. External Intrusion<\/h3>\n<\/div>\n<\/div>\n
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Cybercriminals and hackers frequently target networks to steal sensitive data. By identifying efforts to exfiltrate data via malware, phishing emails, or illegal access points, network data loss prevention (DLP) can be an essential line of defense.<\/p>\n<\/div>\n<\/div>\n

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5. Advanced Persistent Threats (APTs)<\/h3>\n<\/div>\n<\/div>\n
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Modern network DLP solutions are now equipped to detect and mitigate Advanced Persistent Threats<\/a>. These sophisticated, long-term cyberattack campaigns often involve multiple stages of infiltration and data exfiltration.<\/p>\n

Network DLP can:<\/strong><\/em><\/p>\n

Detect unusual data transfer patternsMonitor lateral movement within networksIdentify potential command and control (C2)<\/a> communicationPrevent staged data aggregation before exfiltration\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/div>\n

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6. Supply Chain and Third-Party Risk<\/h3>\n<\/div>\n<\/div>\n
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With increasing interconnectedness, network DLP now plays a crucial role in managing risks associated with supply chain and third-party vendor interactions:<\/p>\n

Monitor data exchanges with external partnersEnforce strict data sharing policiesPrevent unauthorized data transfers through vendor networksMaintain compliance across complex ecosystem interactions\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/div>\n

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Evolution of Network DLP: Implementation Strategies for 2026<\/h2>\n<\/div>\n<\/div>\n
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As cyber threats become increasingly sophisticated, network Data Loss Prevention (DLP) solution<\/a> must continuously adapt and innovate. The landscape of data protection is rapidly changing, driven by technological advancements and emerging security challenges. Organizations are now looking beyond traditional security measures to implement more dynamic, intelligent approaches to network data protection.<\/p>\n<\/div>\n<\/div>\n

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Embracing Zero Trust Architecture<\/h3>\n<\/div>\n<\/div>\n
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The traditional perimeter-based security model has become obsolete in today\u2019s distributed computing environments. Network DLP solutions are now integrating\u202fZero Trust architecture<\/a>, a security paradigm that fundamentally transforms how organizations approach data protection:<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tContinuous Verification:\u202fUnlike legacy systems that trust users once authenticated, Zero Trust mandates continuous verification of every data access request. This means each interaction is scrutinized regardless of its origin or previous trust status.\u202f<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tMicro-Segmentation:\u202fNetwork resources are now divided into highly granular segments, limiting potential breach impacts. This approach ensures that even if one network segment is compromised, the entire network remains protected.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tContext-Aware Policy Enforcement:\u202fModern network DLP goes beyond binary allow\/deny decisions. Policies are now dynamically adjusted based on multiple factors: User identity and role Device health and security posture Data sensitivity classifications Real-time contextual information <\/span><\/p><\/div>\n<\/div>\n

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AI and Machine Learning: Transforming Network DLP<\/h3>\n<\/div>\n<\/div>\n
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Artificial Intelligence and\u202fMachine Learning<\/a>\u202fare revolutionizing network data loss prevention, moving from reactive to predictive security models:<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tPredictive Threat Detection: AI algorithms can now analyze historical data patterns to anticipate potential breach scenarios before they occur, offering a proactive approach to data security.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tIntelligent Policy Development: Machine learning enables the creation of more nuanced, context-aware policies that adapt to evolving organizational needs and threat landscapes.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tFalse Positive Reduction: Advanced AI techniques help distinguish between genuine security threats and benign activities, significantly\u202freducing alert fatigue<\/a>\u202ffor security teams.\u202f<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tAutomated Threat Response: Instead of merely detecting threats, modern network DLP solutions can now automatically respond to potential data exfiltration attempts, implementing predefined mitigation strategies in milliseconds.\u202f<\/span><\/p><\/div>\n<\/div>\n

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Protect Data Across Your
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\n\t\t\t\t\t\t\t\t\t\tData Visibility and Control<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\tDeep Session Inspection<\/span><\/p>\n

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About Fidelis Network Data Loss Prevention Solution<\/h2>\n<\/div>\n<\/div>\n
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Fidelis Security\u2019s Patented Deep Session Inspection<\/a> technology gives you the ability to investigate threats and stop sessions that violate policies with details about who is sending and receiving data and what type of data is being sent. DLP security with Fidelis prevents data loss for your enterprise by:<\/p>\n<\/div>\n<\/div>\n

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\n\t\t\t\t\t\t\t\t\t\tExtracting metadata<\/a> and monitoring 300+ different attributes.<\/span><\/p>\n

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>
\n\t\t\t\t\t\t\t\t\t\tProviding increased data visibility<\/span><\/p>\n

\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>
\n\t\t\t\t\t\t\t\t\t\tInvestigating how and why your data moves <\/span><\/p>\n

\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>
\n\t\t\t\t\t\t\t\t\t\tPreventing data theft or unauthorized sharing<\/span><\/p>\n

\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>
\n\t\t\t\t\t\t\t\t\t\tSafeguarding IP and business reputation<\/span><\/p>\n

\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>
\n\t\t\t\t\t\t\t\t\t\tEnsuring compliance<\/span><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Frequently Asked Questions<\/h2>\n<\/div>\n<\/div>\n
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What industries benefit most from Network DLP solutions?<\/h3>\n<\/div>\n
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Network DLPs benefit the most in highly regulated industries, like\u202ffinance<\/a>,\u202fhealthcare<\/a>, and the\u202fgovernment sector<\/a>.<\/p>\n<\/div><\/div>\n

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How does Network DLP handle encrypted traffic?<\/h3>\n<\/div>\n
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Network DLP solutions often have decryption capabilities for inspecting encrypted traffic to assure sensitive data is not hiding within encrypted communications.<\/p>\n<\/div><\/div>\n

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Network DLP vs endpoint DLP: What is the difference between them?<\/h3>\n<\/div>\n
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Network DLP monitors and safeguards data in motion across a network,\u202fwhereas\u202fEndpoint DLP performs the same functions for data at rest or in use on specific devices.<\/p>\n<\/div><\/div>\n

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Can Network DLP solutions be customized for specific organizational needs?<\/h3>\n<\/div>\n
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Yes, Network DLP solutions can be configured to feature policies and rules customized to suit any\u202fdata\u202fsecurity requirement of an organization and its business processes.<\/p>\n<\/div><\/div>\n

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How does Network DLP improve employee security awareness?<\/h3>\n<\/div>\n
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Network DLP improves security awareness among employees by notifying and describing accidental policy violations, thus educating employees on how to handle the data properly.<\/p>\n<\/div><\/div>\n

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Is network data loss prevention worth it for a remote workforce?<\/h3>\n<\/div>\n
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Yes. Network DLP helps protect sensitive data as employees work remotely and access cloud applications. It monitors data transfers and helps prevent unauthorized data sharing.<\/p>\n<\/div><\/div>\n

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Cloud DLP or network DLP for compliance needs?<\/h3>\n<\/div>\n
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It depends on your environment. Network DLP protects data in motion, while Cloud DLP secures data stored and shared in cloud services. Many organizations use both to meet compliance requirements.<\/p>\n<\/div><\/div>\n

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Can network DLP detect files uploaded to personal cloud storage?<\/h3>\n<\/div>\n
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Yes. Network DLP can detect files being uploaded to personal cloud storage services and, based on policy, alert administrators or block the transfer.<\/p>\n<\/div><\/div>\n

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How do I choose between on-prem and cloud-based DLP?<\/h3>\n<\/div>\n
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Choose based on your infrastructure, security requirements, and compliance needs. On-prem DLP offers greater control, while cloud-based DLP provides easier deployment and scalability.<\/p>\n<\/div><\/div>\n

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What types of sensitive data can network DLP identify?<\/h3>\n<\/div>\n
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Network DLP can identify sensitive data such as personally identifiable information (PII), financial records, payment card data, healthcare information, intellectual property, and confidential business documents.<\/p>\n<\/div><\/div>\n

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How to reduce false positives in network DLP alerts?<\/h3>\n<\/div>\n
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Reduce false positives by refining DLP policies, classifying sensitive data accurately, and regularly reviewing alert rules. Context-aware analysis can also improve detection accuracy.<\/p>\n<\/div><\/div>\n

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Do I need network DLP if I already use a firewall?<\/h3>\n<\/div>\n
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Yes. Firewalls control network access, while Network DLP inspects data in motion to detect and prevent unauthorized transfers of sensitive information.<\/p>\n<\/div><\/div>\n

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How long does it take to deploy network data loss prevention?<\/h3>\n<\/div>\n
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Deployment time depends on the size and complexity of your environment. Smaller deployments may take a few days, while larger environments can take several weeks.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

The post What is Network Data Loss Prevention (DLP)?<\/a> appeared first on Fidelis Security<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Defining Network Data Loss Prevention (DLP) Network Data Loss Prevention (DLP) software\u202fmonitors,\u202fdetects,\u202fand potentially blocks sensitive data exfiltration while the data is in motion.\u202fNetwork DLP\u202fprevents the transfer of critical information outside of a corporate network and is mandated as a compliance requirement in some regulated industries to ensure that measures taken by organizations\u202fare able to\u202fdemonstrate\u202fdue care […]<\/p>\n","protected":false},"author":0,"featured_media":8640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-8639","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/8639"}],"collection":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8639"}],"version-history":[{"count":0,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/posts\/8639\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=\/wp\/v2\/media\/8640"}],"wp:attachment":[{"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cybersecurityinfocus.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}