Data Loss Prevention (DLP) Services
Sensitive data — Controlled Unclassified Information, electronic Protected Health Information, payment card numbers, personally identifiable information — is your organization's most valuable and most targeted asset. Petronella Technology Group, Inc. deploys comprehensive Data Loss Prevention solutions that discover, classify, monitor, and protect sensitive data across endpoints, networks, cloud applications, and email — preventing unauthorized access, sharing, and exfiltration before a breach occurs. Backed by 23+ years of cybersecurity expertise and CMMC-RP certified data protection specialists.
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Q: What is Data Loss Prevention (DLP)? Data Loss Prevention is a set of technologies, policies, and processes designed to prevent sensitive data from being lost, stolen, or shared with unauthorized recipients. DLP solutions monitor data in three states: data at rest (stored on endpoints, servers, and databases), data in motion (transmitted over networks, email, and web applications), and data in use (being accessed, edited, or processed by users and applications). Modern DLP combines content inspection, contextual analysis, and user behavior monitoring to enforce data handling policies automatically — blocking, encrypting, or alerting when sensitive data is about to leave your organization's control. PTG implements end-to-end DLP programs that satisfy the data protection requirements of CMMC, HIPAA, PCI DSS, GLBA, and state privacy regulations. Schedule a free DLP assessment →
The Cost of Unprotected Sensitive Data
Organizations generate and share more sensitive data than ever before, but most lack the visibility and controls to prevent that data from falling into the wrong hands.
Comprehensive Data Protection Across Every Channel
PTG's DLP service protects sensitive data everywhere it exists and everywhere it travels — endpoints, network, cloud, and email — with unified policies, centralized management, and expert-managed operations.
Endpoint DLP
Endpoints are where employees create, access, edit, and share sensitive data every day — making them the most common vector for data loss. PTG's endpoint DLP monitors and controls how sensitive data is used on laptops, desktops, and mobile devices. Our solution inspects file content in real time as users attempt to copy files to USB drives, upload documents to personal cloud storage, print sensitive materials, take screenshots of confidential data, or share files through unauthorized applications. Content inspection uses pattern matching (credit card numbers, Social Security numbers, medical record numbers), document fingerprinting (identifying copies and derivatives of specific sensitive documents), and machine learning classifiers trained on your organization's data types. When a policy violation is detected, endpoint DLP can block the action, encrypt the data, allow with justification logging, or alert the security team — depending on the sensitivity level and your policy configuration. For organizations handling CUI under CMMC requirements, endpoint DLP provides the media protection and data handling controls that assessors verify during Level 2 certification.
Email DLP
Email remains the primary channel for business communication and, consequently, the most common channel for data leakage — both accidental and intentional. PTG's email DLP inspects outbound email content, attachments, and metadata before messages leave your organization, applying policies that prevent sensitive data from being sent to unauthorized recipients. Our solution scans email bodies and attachments for regulated data types (ePHI, PCI data, CUI, PII), proprietary information patterns, and intellectual property markers. When sensitive content is detected in an outbound email, the system can block delivery, automatically encrypt the message, quarantine for review, strip attachments, or notify the sender about the policy violation. Integration with Microsoft 365 and Google Workspace provides native protection without requiring email to route through external gateways. PTG also configures policies for common accidental data loss scenarios: auto-complete sending to the wrong recipient, reply-all exposing confidential conversations, and forwarding internal-only communications to external addresses. These controls address the HIPAA requirement for technical safeguards protecting ePHI in electronic communications.
Network DLP
Network DLP monitors data flowing across your network infrastructure, inspecting traffic at ingress and egress points to detect sensitive data being transmitted to unauthorized destinations. PTG deploys network DLP capabilities that analyze HTTP/HTTPS traffic, FTP transfers, database queries, and custom protocol communications for sensitive content patterns. Our solution identifies data exfiltration attempts through web uploads, file sharing services, social media posts, web-based email, and encrypted channels that bypass endpoint controls. For encrypted traffic (which now represents over 90% of web traffic), network DLP integrates with SSL/TLS inspection capabilities to examine content without creating security blind spots. Network DLP provides the visibility layer that catches data loss scenarios endpoint agents miss: data transmitted from unmanaged devices, IoT systems, servers, and network-attached equipment. When combined with endpoint DLP and our MDR service, network DLP creates a defense-in-depth approach to data protection that covers every exfiltration vector attackers might exploit.
Cloud DLP
As organizations move data to cloud applications and storage, DLP must follow. PTG extends data protection to cloud environments including Microsoft 365, Google Workspace, Salesforce, Box, Dropbox, AWS S3, Azure Blob Storage, and hundreds of other SaaS and IaaS platforms. Our cloud DLP discovers sensitive data already stored in cloud repositories, classifies it according to your data handling policies, and monitors ongoing sharing and access activities for policy violations. Cloud Access Security Broker (CASB) integration provides visibility into shadow IT — unsanctioned cloud applications employees use to share sensitive data outside of approved channels. For each cloud application, we enforce policies governing who can access sensitive data, how it can be shared (internal only, specific partners, public), and what compliance markings are required. CSPM integration ensures the cloud storage infrastructure itself is configured securely, while cloud DLP ensures the data stored within it is classified and protected according to your policies.
Data Discovery & Classification
Effective DLP requires knowing what sensitive data you have, where it resides, and how it should be handled — but most organizations cannot answer these fundamental questions. PTG conducts comprehensive data discovery scans across your entire infrastructure: file servers, databases, email archives, SharePoint sites, cloud storage, endpoint hard drives, and backup systems. Our discovery process identifies sensitive data types including CUI (with NIST 800-171 marking categories), ePHI (HIPAA-defined identifiers), PCI cardholder data (primary account numbers, expiration dates, CVVs), PII (Social Security numbers, driver's license numbers, financial account numbers), and intellectual property (source code, engineering documents, trade secrets). Each discovered data asset receives a classification label that drives DLP policy enforcement: Restricted, Confidential, Internal, or Public. Classification labels persist with the data as it moves between systems, ensuring consistent protection regardless of location. This data inventory becomes the foundation for your entire DLP program and satisfies the data mapping requirements of CMMC, HIPAA, PCI DSS, and GDPR.
DLP Policy Management & Incident Response
DLP effectiveness depends on well-designed policies that balance security with productivity — overly restrictive policies that block legitimate business activities get disabled by frustrated users and managers. PTG designs DLP policies through a collaborative process: we analyze your data workflows, identify legitimate sharing patterns, define risk thresholds for each data classification level, and build policies that protect sensitive data without impeding normal business operations. Our managed DLP service includes continuous policy tuning based on false positive analysis, new business workflow requirements, and evolving regulatory guidance. When DLP incidents occur, PTG's analysts investigate each event to determine whether the activity was accidental, policy circumvention, or malicious data theft. Incident response includes user notification, manager escalation, evidence preservation, and compliance documentation. Monthly DLP reports provide executive visibility into data handling trends, policy violations by department and data type, and risk reduction metrics. For organizations with security awareness training programs, DLP incident data feeds directly into targeted training modules for employees who repeatedly trigger data handling violations.
How We Implement Data Loss Prevention
PTG deploys DLP in a phased approach that starts with visibility, builds to monitoring, and progresses to enforcement — ensuring policies are accurate and business-aligned before blocking begins.
Discover & Classify
Comprehensive data discovery across endpoints, servers, databases, cloud applications, and email. Every sensitive data asset is classified by type, sensitivity level, and applicable regulatory requirements to build a complete data inventory.
Design & Configure
DLP policies are designed collaboratively, mapping data classification levels to handling rules for each channel (endpoint, email, network, cloud). Policies are configured in monitor-only mode initially to validate accuracy without disrupting operations.
Monitor & Tune
During the monitoring phase, PTG analysts review every policy trigger to identify false positives, legitimate workflow exceptions, and policy gaps. Policies are refined iteratively until false positive rates are below acceptable thresholds for production enforcement.
Enforce & Manage
Once policies are validated, enforcement mode activates with block, encrypt, or alert actions based on data sensitivity and violation severity. Ongoing management includes incident investigation, policy updates, monthly reporting, and quarterly program reviews.
DLP for Regulated Industries
Every regulated industry has specific data protection requirements. PTG builds DLP programs tailored to the data types, compliance frameworks, and threat models unique to your sector.
Healthcare: Protecting ePHI
HIPAA requires covered entities and business associates to implement technical safeguards that protect electronic Protected Health Information from unauthorized disclosure. PTG's DLP identifies and protects the 18 HIPAA-defined identifiers (patient names, medical record numbers, Social Security numbers, dates, geographic data, and more) across all communication channels. Our healthcare DLP policies prevent staff from emailing unencrypted patient records, uploading medical images to unauthorized cloud services, or copying patient databases to personal devices. When ePHI must be shared with authorized external parties, DLP automatically encrypts the transmission and logs the activity for HIPAA audit trail requirements. These controls directly satisfy HIPAA Security Rule technical safeguard requirements at 45 CFR 164.312.
Defense: Protecting CUI
Defense contractors handling Controlled Unclassified Information under CMMC Level 2 must implement data protection controls that prevent CUI from being accessed, stored, or transmitted outside of authorized boundaries. PTG's DLP enforces CUI marking requirements, restricts CUI sharing to authorized personnel and systems, blocks CUI transfer to personal devices or unauthorized cloud services, and logs all CUI access activities for audit trail compliance. Our DLP policies map to NIST 800-171 control families including Media Protection (MP), System and Communications Protection (SC), and Access Control (AC). For defense organizations also pursuing ISO 27001 certification, DLP provides the technical controls evidence for Annex A data protection requirements.
Finance: Protecting PCI & Financial Data
Financial institutions must protect cardholder data under PCI DSS, customer financial information under GLBA, and trading data under SEC regulations. PTG's DLP detects and protects credit card numbers (PANs), bank account details, wire transfer instructions, and customer financial records across all channels. Our PCI-specific policies enforce PCI DSS Requirement 3 (protect stored cardholder data) and Requirement 4 (encrypt transmission of cardholder data) while providing the logging and monitoring evidence required by Requirement 10. For banking clients, we implement enhanced controls for wire transfer instruction protection, preventing business email compromise schemes that alter payment routing details by flagging emails containing bank account numbers sent to external recipients.
Data Loss Prevention Questions, Answered
Will DLP slow down employee productivity?
No — when implemented correctly. PTG's phased deployment approach starts with monitor-only mode to understand your organization's actual data workflows before enabling enforcement. We identify legitimate business activities that involve sensitive data and build policy exceptions for approved workflows. Endpoint DLP agents are designed for minimal performance impact, using less than 2% CPU overhead during normal operation. The key to DLP that works without productivity impact is accurate policy design: we invest significant time during the Design and Configure phase to ensure policies target genuine risk scenarios rather than blocking routine business activities. Organizations with mature DLP programs report that employees rarely notice DLP enforcement because policies align with their normal approved workflows.
What types of sensitive data can DLP detect?
PTG's DLP solutions detect all major categories of regulated and sensitive data: Protected Health Information (PHI/ePHI) including the 18 HIPAA identifiers, Payment Card Industry data (credit card numbers, expiration dates, CVVs), Personally Identifiable Information (Social Security numbers, driver's license numbers, passport numbers, financial account numbers), Controlled Unclassified Information (CUI with NIST marking categories), intellectual property (source code, engineering documents, trade secrets via document fingerprinting), and custom data types defined by your organization. Detection methods include regular expression pattern matching, keyword dictionaries, document fingerprinting, exact data matching against databases, optical character recognition for images, and machine learning classifiers trained on your organization's specific data types.
Does DLP work with encrypted email and web traffic?
Yes. PTG's DLP integrates with SSL/TLS inspection to analyze encrypted web traffic for sensitive content. For email, our solution integrates natively with Microsoft 365 and Google Workspace to inspect content before encryption is applied to outbound messages. Endpoint DLP inspects files and content at the application layer before they enter encrypted transmission channels, ensuring visibility regardless of transport encryption. For organizations concerned about the privacy implications of SSL inspection, we implement selective inspection policies that only decrypt traffic to high-risk destinations (personal cloud storage, webmail, file sharing sites) while allowing trusted business applications to pass without inspection.
How does DLP handle USB drives and removable media?
PTG's endpoint DLP provides granular control over USB devices and removable media. Policies can block all removable storage devices, allow only company-provisioned encrypted USB drives (identified by hardware serial number), permit read-only access while blocking writes, or allow transfers with automatic encryption and logging. For organizations under CMMC or NIST 800-171, we implement the media protection controls that require CUI to be encrypted on all removable media and that restrict removable media usage to authorized devices only. All USB device connections and file transfer attempts are logged for audit trail purposes, and policy violations generate real-time alerts to the security team.
Can DLP prevent insider threat data theft?
DLP is one of the most effective controls against insider threat data theft, but it works best as part of a layered approach. PTG's DLP detects common insider exfiltration techniques: bulk file downloads, USB copying of sensitive directories, email forwarding of confidential documents to personal accounts, uploads to personal cloud storage, and printing of restricted materials. When combined with User and Entity Behavior Analytics (UEBA) through our MDR service, DLP also identifies behavioral patterns that precede data theft — such as an employee accessing files outside their normal scope, downloading unusual volumes of data, or accessing systems during off-hours shortly before a resignation. This combined approach catches both opportunistic data theft and planned, systematic exfiltration campaigns.
How long does DLP implementation take?
PTG's DLP implementation follows a phased timeline. Data discovery and classification typically takes 2-4 weeks depending on the size and complexity of your environment. Policy design and configuration takes 1-2 weeks. Monitor-only deployment runs for 4-6 weeks to validate policy accuracy and identify false positives. Enforcement mode activation occurs after policy tuning is complete, typically 8-12 weeks from project start. Full deployment across all channels (endpoint, email, network, cloud) is usually complete within 3-4 months. We continue managing and optimizing policies on an ongoing basis after deployment, with monthly reporting and quarterly program reviews.
Complementary Data Protection Solutions
Protect Your Sensitive Data Before It Walks Out the Door
Schedule a free DLP assessment with PTG. We will discover where sensitive data lives in your environment, identify unprotected exfiltration channels, and recommend a data protection strategy tailored to your compliance requirements.
Serving Raleigh, Durham, RTP & Nationwide Since 2002 • CMMC-RP Certified • 2,500+ Clients