In the digital age, information is the most valuable asset an organization possesses—and also its greatest vulnerability. Every document created, every file shared, and every communication transmitted carries hidden data that can expose sensitive information to unintended recipients. This hidden data, known as metadata, lurks within office documents and multimedia files, often containing details far more revealing than the visible content: author names, creation dates, revision histories, internal comments, and even geolocation coordinates.
The risks are substantial. A seemingly innocuous PDF shared with a client may contain tracked changes revealing internal negotiations. A photograph posted to a corporate website might embed GPS coordinates of a sensitive facility. A Word document circulated externally could expose proprietary information through its revision history. These metadata leaks have led to data breaches, competitive intelligence losses, and regulatory fines.
Adarsus Technologies S.L. addresses this critical security gap through specialized solutions for metadata management in office documents and multimedia files. By preventing the leakage of sensitive information through metadata, Adarsus ensures that organizations can share documents confidently, knowing that hidden data will not compromise their security or reputation.
This guide provides a comprehensive examination of Adarsus: the company, its flagship MetaClean product, the certification process that validates its security claims, the broader importance of metadata security, and the integration of secure data practices with modern infrastructure including proxy networks.
What Is Adarsus?
Company Overview
Adarsus Technologies S.L. is a Spanish company founded in 2011, specializing in the creation and distribution of software to prevent information leakage through metadata in office documents and multimedia files. The company has established itself as a leading provider in the metadata security space, with its solutions recognized by national cybersecurity authorities.
The company operates with a clear mission: to offer technological solutions that prevent the leakage of sensitive information through metadata, thereby avoiding the use of this information by third parties to carry out malicious actions that could compromise the security and image of client organizations.
Adarsus is registered in the Catalogue of Cyber Security Companies and Solutions (INCIBE), Spain’s National Cybersecurity Institute, demonstrating its recognized standing in the cybersecurity sector.
The Metadata Security Problem
To understand Adarsus’s value proposition, one must first understand the metadata security problem. Metadata is often described as “data about data”—information that describes, explains, or contextualizes other data. In office documents and multimedia files, metadata includes:
- Document properties – Author names, creation dates, modification dates, and company information
- Revision history – Tracked changes, comments, and version history
- Hidden content – Embedded objects, macros, and previously deleted text
- Technical details – Software versions, operating system information, and file paths
- Geolocation data – GPS coordinates embedded in photos and videos
- User information – Editor identities, reviewer comments, and approval trails
When documents are shared externally—with clients, partners, regulators, or the public—this metadata travels with the file. The recipient may have access to information that the sender never intended to disclose.
The consequences of metadata leakage can be severe:
- Competitive intelligence – Revealing strategic discussions, pricing negotiations, or product development plans
- Regulatory exposure – Violating data protection regulations like GDPR through improper handling of personal data
- Reputational damage – Exposing internal conflicts, errors, or unprofessional communications
- Legal liability – Providing evidence in litigation that was never intended for disclosure
Adarsus’s Approach
Adarsus addresses this problem through specialized software solutions that manage, clean, and control metadata in office documents and multimedia files. The company’s flagship product, MetaClean, provides comprehensive metadata removal and management capabilities.
The Adarsus approach is built on several key principles:
Specialization – Unlike general-purpose file cleaners, Adarsus focuses specifically on metadata security, providing depth of functionality that general tools cannot match.
Certification – Adarsus has pursued and achieved rigorous certification for its solutions, validating their security claims through independent testing.
Compliance – The company’s solutions are designed to support compliance with data protection regulations including GDPR.
Enterprise Focus – Adarsus serves organizations that require robust, scalable metadata security solutions, from government agencies to large corporations.
Infrastructure Security – Adarsus’s infrastructure is based on Amazon EC2, reinforcing data protection and ensuring strict GDPR compliance. Client information is hosted on servers located in the client’s country, providing greater control, sovereignty, and confidence.
MetaClean: Adarsus’s Flagship Solution
Overview and Capabilities
MetaClean is Adarsus’s primary software product, designed to prevent information leakage through metadata in office documents and multimedia files. The solution enables organizations to:
- Remove metadata – Eliminating hidden information from documents before sharing
- Preview metadata – Viewing all metadata contained within a file before taking action
- Edit metadata – Selectively modifying or removing specific metadata elements
- Batch process – Cleaning metadata from multiple files simultaneously
- Integrate with workflows – Incorporating metadata cleaning into document management processes
The software is available in multiple versions to address different use cases and platforms, including MetaClean for Outlook, which is qualified for use with Microsoft Outlook.
Certification and Validation
MetaClean has undergone a stringent certification process carried out in laboratories approved by the Centre National Cryptologic (CNC), France’s national cryptographic authority. This certification process requires more than a year of intensive work by specialised teams and guarantees a level of safety that few other solutions can offer.
The certification has resulted in MetaClean solutions forming part of the National Cryptologic Centre’s catalogue of ICT products and services, and also in their suitability for the National Security Scheme (ENS) High level. This is a significant achievement, as ENS High level certification is reserved for security products that meet the most stringent requirements for protecting sensitive government and national security information.
Beyond certification, all MetaClean products are approved, except MetaClean for Outlook which is qualified. The distinction between certification, qualification, and approval reflects different levels of validation and different use cases.
Security and Compliance Framework
Adarsus operates within a comprehensive security and compliance framework:
GDPR Compliance – The company’s infrastructure and practices ensure strict compliance with the General Data Protection Regulation. This is particularly important for organizations operating in or serving the European market.
Data Processing Agreement – Adarsus provides a Data Processing Agreement (DPA) that governs how client data is handled, stored, and protected.
Infrastructure Security – Based on Amazon EC2, Adarsus’s infrastructure provides the security and reliability of one of the world’s leading cloud platforms.
Local Data Sovereignty – Client information is hosted on servers located in the client’s country, ensuring compliance with local data sovereignty requirements.
MetaClean for Different Use Cases
MetaClean serves a range of use cases across industries:
Government and Defense – With ENS High level certification, MetaClean is suitable for government agencies handling classified information.
Legal and Professional Services – Law firms and consultancies can share documents confidently, knowing that internal comments and revision history will not be exposed.
Financial Services – Banks and financial institutions can comply with regulatory requirements for secure document handling.
Healthcare – Medical organizations can protect patient information contained in document metadata.
Corporate Communications – Marketing and PR teams can share documents externally without revealing internal discussions.
The Intersection of Metadata Security and Proxy Infrastructure
Why Proxy Infrastructure Matters for Data Security
While Adarsus focuses on metadata within documents, the broader data security picture includes the infrastructure through which data is accessed and transmitted. Proxy infrastructure plays a critical role in this ecosystem:
Secure Data Collection – Organizations collecting data from the web—for market intelligence, competitive analysis, or regulatory compliance—must ensure that their collection methods are secure and compliant. Proxies enable secure, authenticated access to web resources.
Geographic Compliance – Data protection regulations often require that data be collected and processed within specific geographic boundaries. Proxy infrastructure with geographic targeting enables compliance with these requirements.
Access Control – Proxies provide an additional layer of access control, ensuring that only authorized systems and users can access sensitive data sources.
Traffic Encryption – Professional proxy infrastructure encrypts traffic between collection points and processing systems, protecting data in transit.
Full-Industry Proxy IP Application Solutions
Power scalable growth for every cross-border business scenario with IPFLY’s reliable global proxy network
Integrating Security Solutions
A comprehensive data security strategy combines multiple layers of protection:
- Network layer – Proxy infrastructure controls access and encrypts traffic
- Document layer – Solutions like MetaClean remove sensitive metadata from documents
- Application layer – Secure applications and workflows prevent data leakage
- Compliance layer – Policies and procedures ensure regulatory compliance
For organizations collecting data at scale—whether for market research, competitive intelligence, or regulatory compliance—the combination of secure proxy infrastructure and metadata security solutions provides end-to-end protection.
IPFLY’s Role in Secure Data Operations
IPFLY provides the professional proxy infrastructure that supports secure, compliant data collection operations. With over 90 million residential IP addresses across 190+ countries, IPFLY enables organizations to:
- Collect data securely – Residential proxies provide authentic, high-trust IP addresses that maintain access to target websites
- Maintain geographic compliance – Precise country, city, and ISP-level targeting ensures data collection aligns with regulatory requirements
- Protect data in transit – Encrypted connections protect data as it moves from collection points to processing systems
- Scale operations – Large IP pools support high-volume data collection without detection
IPFLY’s dynamic residential proxies provide the rotation capabilities essential for high-volume, undetectable data collection. The large pool of residential IPs ensures that organizations can maintain low request-per-IP ratios while collecting the data they need.
IPFLY’s static residential proxies offer the consistent IP assignments required for session-based workflows and authenticated access, ensuring that long-running data collection operations maintain stable connections.
IPFLY’s datacenter proxies deliver high performance with 99.9% availability for non-defended workloads and internal infrastructure.
Legal and Compliance Considerations
GDPR and Data Protection
The General Data Protection Regulation (GDPR) imposes strict requirements on how organizations handle personal data. Metadata often contains personal information—author names, reviewer identities, and other identifying details. Failure to remove this metadata before sharing documents can constitute a GDPR violation.
Adarsus’s solutions, including MetaClean, are designed to support GDPR compliance by enabling organizations to remove personal data from document metadata before sharing. The company’s Data Processing Agreement provides the contractual framework for compliant data handling.
National Security Scheme (ENS) High Level
In Spain, the National Security Scheme (ENS) establishes security requirements for public sector information systems. ENS High level is the most stringent certification level, reserved for systems handling the most sensitive information.
MetaClean’s ENS High level certification demonstrates that the solution meets the highest standards for protecting sensitive government and national security information. This certification is particularly important for public sector organizations and their suppliers.
International Compliance
Beyond Spain and the EU, Adarsus’s solutions support compliance with international data protection frameworks. The company’s infrastructure, based on Amazon EC2 and with local data hosting options, enables organizations to meet regional requirements.
Best Practices for Document Security
For organizations seeking to protect sensitive information:
- Implement metadata cleaning – Use solutions like MetaClean to remove metadata from documents before sharing
- Establish policies – Define clear policies for document handling and metadata management
- Train employees – Ensure staff understand the risks of metadata leakage and the importance of cleaning documents
- Integrate with workflows – Incorporate metadata cleaning into document management and sharing workflows
- Audit regularly – Regularly review and update metadata security practices
The Future of Metadata Security
Evolving Threats
As organizations become more digital and more connected, the threats to data security continue to evolve. Metadata security faces several emerging challenges:
AI and Machine Learning – AI systems can analyze metadata patterns to extract insights that human reviewers might miss. This creates new risks for organizations that rely on manual metadata review.
Cloud Collaboration – The shift to cloud-based document collaboration creates new metadata vectors, as documents are edited and shared across multiple platforms and devices.
Regulatory Evolution – Data protection regulations continue to evolve, with new requirements for metadata handling and document security.
Supply Chain Risk – Documents shared with suppliers and partners create metadata risks that extend beyond the originating organization.
Adarsus’s Response
Adarsus continues to evolve its solutions to address emerging threats. The company’s 2023 certifications for LINCE, MetaClean, and metaOLVIDO demonstrate ongoing investment in product development and validation.
The company’s recognition as a leading provider in metadata security, combined with its certification achievements, positions it well to address the evolving threat landscape.
Integration with Broader Security Frameworks
The future of metadata security lies in integration with broader security frameworks. Organizations are moving toward unified data protection strategies that address security at multiple layers:
- Network layer – Secure infrastructure, including proxies
- Application layer – Secure applications and workflows
- Document layer – Metadata cleaning and document security
- Data layer – Encryption and data protection
- Policy layer – Governance and compliance
This integrated approach ensures that data is protected throughout its lifecycle—from collection through processing to sharing and archiving.
Adarsus Technologies S.L. addresses a critical and often overlooked vulnerability in enterprise data security: the metadata hidden within office documents and multimedia files. Through its flagship MetaClean solution, Adarsus enables organizations to prevent the leakage of sensitive information through metadata, protecting against competitive intelligence losses, regulatory violations, and reputational damage.
The company’s commitment to certification and validation sets it apart in the metadata security space. MetaClean’s certification by the Centre National Cryptologic and its suitability for the National Security Scheme High level demonstrate a level of security validation that few solutions can match. This certification provides organizations with confidence that their metadata security practices meet the highest standards.
Beyond metadata security, organizations must consider the broader data security ecosystem. Proxy infrastructure from providers like IPFLY enables secure, compliant data collection and transmission, complementing document-level security solutions. The combination of secure infrastructure and document security provides end-to-end protection for sensitive data.
As threats to data security continue to evolve, organizations must remain vigilant. The metadata hidden within documents represents a persistent vulnerability that requires specialized solutions and ongoing attention. Adarsus provides the tools and expertise to address this vulnerability, enabling organizations to share documents confidently, knowing that hidden data will not compromise their security.
In an era of increasing data regulation and security threats, metadata security is not optional—it is essential. Adarsus helps organizations meet this essential requirement.
For organizations seeking to enhance their document security and protect against metadata leakage, IPFLY provides the secure proxy infrastructure that supports compliant data operations:
- Dynamic Residential Proxies – Secure, high-trust residential IP addresses for data collection and market intelligence operations.
- Static Residential Proxies – Exclusive, persistent residential IP addresses for consistent, long-term access and session-based workflows.
- Datacenter Proxies – High-performance proxy infrastructure with 99.9% availability for non-defended workloads.
Build your secure data infrastructure today. Visit IPFLY’s homepage to explore the full range of proxy solutions, or register now for immediate access to professional proxy capabilities that support your secure data operations.
