9 Best Cloud File Security Software I Evaluated for 2026

Cloud file security gaps can stay invisible until something goes wrong: a permission left too open, a file shared somewhere it shouldn’t be, or a threat that slips through unnoticed. You already know the risk, and you already know you need software to reduce it. The real challenge is finding the best cloud file security software that balances access control, threat protection, data loss prevention, and compliance, without getting in the way of how your teams actually share and work with files.

To make that decision easier, I evaluated 9 leading cloud file security solutions using G2 Data, verified user reviews, and product research. Below, I’ve broken down where each tool stands out, where it falls short, how it performs on the G2 metrics that matter, and what it costs, so you can narrow your options to the ones that actually fit your security priorities.

Virtru Secure Share is a cloud-native secure file and email sharing tool built by Virtru and designed for organizations handling regulated or sensitive data, including healthcare, financial services, and education. I see it as especially relevant for teams that need to retain control over a file after sharing it; its 99% data security score on G2, the highest of any feature in its profile, reinforces how seriously reviewers rate that core strength. 

Key features of Virtru Secure Share:

• Trusted Data Format (TDF) encryption with persistent file protection
• Post-share access controls, including revocation, expiration, and watermarking
• Browser-based secure sharing with no software downloads required
• Request Files links for collecting encrypted files from external users without Virtru accounts
• Optional FIPS 140-2 support for advanced security and compliance requirements

Pros of Virtru Secure Share as per G2 reviewers:

• Secure sharing feels straightforward. Reviewers praise how easily they can send confidential files and information, with Virtru’s 88% ease-of-use score reinforcing that experience.
• Post-share controls add another layer of protection. Users value expiration dates, revocable access, watermarking, and persistent protection for maintaining greater control after sensitive files leave their hands.
• Large-file exchange removes common email constraints. Reviewers highlight the need to securely send and receive files that exceed standard email attachment limits without splitting them into smaller parts.

Cons of Virtru Secure Share as per G2 reviewers:

• First-time recipients may need guidance. Some reviewers say that external users may initially find secure-message access confusing, though the process becomes straightforward once they’re familiar with it.
• Some platform-specific hiccups affect reliability. A handful of reviewers report slower performance or repeated send attempts within Google Workspace, but describe the issue as inconsistent rather than a dealbreaker.

Explore firsthand feedback from Virtru Secure Share users. →

Check Point Email Security is Check Point’s API-native security solution for protecting cloud email and SaaS collaboration tools from phishing, malicious files, and other targeted threats. I see it as particularly relevant for teams that want protection integrated into their existing cloud environment; its 94% ease of setup score on G2 adds confidence in deployment.

Key features of Check Point Email Security:

• API-based deployment that scans files and content already inside cloud apps
• Data loss prevention (DLP) policies that control access to confidential files
• Coverage extends to Slack, Microsoft Teams, OneDrive, and SharePoint, not just email
• Unified quarantine lets admins and end users view and restore flagged files or emails from one screen
• AI and machine learning-driven threat detection that scans attachments and links before and after delivery

Pros of Check Point Email Security as per G2 reviewers:

• Phishing and threat detection earn consistent praise. Reviewers highlight how effectively it blocks phishing attempts and suspicious emails before they reach inboxes, supported by a 90% user adoption rate in G2’s report.
• Day-to-day management feels approachable. G2 reviewers describe the platform as easy to use for ongoing email security management, with a 94% ease of use score.
• Support holds up when issues come up. Reviewers point to responsive vendor assistance during rollout and troubleshooting, as reflected in a 93% quality of support score.

Cons of Check Point Email Security as per G2 reviewers:

• Onboarding is thorough, which can extend setup time. Some reviewers describe initial integration with existing systems as time-consuming, but note that the process becomes considerably easier once the core configuration is in place.
• Filtering accuracy needs occasional fine-tuning. Reviewers note that legitimate emails are sometimes flagged as spam, requiring manual review, but most say adjusting filter rules over time reduces how often this happens.

Explore firsthand feedback from Check Point Email Security users.→

Tresorit is a zero-knowledge encrypted content collaboration platform for organizations handling sensitive or regulated data, including financial services, healthcare, legal, and other privacy-conscious teams. I see it as especially relevant when encryption needs to be built into file storage and sharing by default; its 78% user adoption rate on G2 is another strong signal of how widely it’s used across its customer base.

Key features of Tresorit:

• Zero-knowledge, end-to-end encryption on every file by default
• Choice of data residency location for regulatory compliance
• Granular link controls: expiration dates, passwords, and watermarks
• Instant access revocation, even after a file is shared
• Secure e-signing built directly into the platform

Pros of Tresorit as per G2 reviewers:

• Zero-knowledge encryption applies to everything by default. Reviewers cite this as the reason they trust Tresorit with high-stakes data, since not even Tresorit itself can access their files, reinforced by a 91% ease of doing business with score.
• Granular sharing controls give teams precise oversight. Reviewers value setting expiration dates, adding passwords, watermarking, and instantly revoking access, with an 89% ease of admin score.
• Data residency flexibility supports regulatory compliance. Reviewers highlight the ability to choose where data is stored, helping them meet GDPR, HIPAA, and PIPEDA requirements without additional infrastructure, as reflected in a 90% quality of support score for compliance-related assistance.
  

Cons of Tresorit as per G2 reviewers:

• Integration options stay limited compared to mainstream platforms. Reviewers note the lack of native connectors to tools like Slack or accounting software, which requires manual file transfers, though most say the trade-off is worthwhile given the security guarantees.
• Sync speed can lag on larger files. Some reviewers note slower uploads due to Tresorit’s lack of block-level sync, but describe it as a minor friction point rather than a workflow blocker.

Explore firsthand feedback from Tresorit users. →

Coro Cybersecurity is a unified cybersecurity platform that brings email, endpoint, cloud application, and data protection into one console. I see it as especially relevant for lean IT teams looking to consolidate security tools; its 11-month estimated ROI payback period on G2 adds a useful signal for buyers weighing that consolidation.

Key features of Coro Cybersecurity:

• Modular protection across endpoint, cloud apps, email, and network
• Automated remediation resolves threats without manual intervention
• Data governance module flags exposed or misconfigured sensitive files
• User behavior monitoring detects anomalous account activity
• Built-in incident response guidance for lean IT teams

Pros of Coro Cybersecurity as per G2 reviewers:

• Centralized management reduces daily security work. Reviewers value seeing device security in one dashboard and letting Coro act on flagged issues, with some reporting fewer tickets once initial problems were resolved.
• Threat detection sends instant email alerts the moment it detects phishing attempts or vulnerabilities, and reviewers note that it surfaces risks in their email accounts and devices within minutes of setup.
• Native M365 and Google Workspace integration lets Coro slot into existing environments without a separate migration step, and reviewers highlight the availability of a dedicated Customer Success contact for implementation and end-user rollout, supported by a 96% support quality score.

Cons of Coro Cybersecurity as per G2 reviewers:

• Simplicity can limit deeper troubleshooting. Some reviewers want more detailed technical logs and device details to investigate issues, though the streamlined approach keeps Coro manageable for lean IT teams.
• Reporting and controls could offer more depth. Reviewers mention wanting richer email logs, more granular filters, and additional response options, but these gaps tend to matter most for teams that need highly customized security workflows.

Explore firsthand feedback from Coro Cybersecurity users. →

Cisco Duo is an identity security platform for protecting access to cloud applications and other organizational resources through multi-factor authentication (MFA), access policies, and device trust capabilities. I see it as particularly relevant for organizations adding identity verification to their existing security stack; its 95% ease of admin score on G2 reinforces its manageability for IT teams.

Key features of Cisco Duo:

• Adaptive access policies based on user and device risk signals
• Passwordless authentication options beyond push notifications
• Single sign-on (SSO) across cloud and on-prem applications
• Device trust visibility flags out-of-date or risky endpoints
• Risk-based policies that adjust verification requirements dynamically

Pros of Cisco Duo as per G2 reviewers:

• Push authentication keeps MFA quick. Reviewers value approving login requests on their phones with minimal disruption to everyday sign-ins, while its 97% ease of setup score indicates a straightforward setup.
• Access controls strengthen authentication beyond passwords. Reviewers value the additional verification that Duo provides between credentials and protected applications, while keeping the process relatively simple for end users.
• Duo fits into existing environments well. Reviewers highlight its compatibility with a range of applications and systems, making it practical for organizations seeking to secure access across an established technology stack.

Cons of Cisco Duo as per G2 reviewers:

• Push notifications can occasionally be delayed. Reviewers note slower delivery when connectivity is weak, which can briefly delay authentication, though the push experience generally remains convenient for routine access.
• Reporting may lack depth for advanced analysis. Some reviewers want more detailed reporting and rely on external security tools for deeper investigation, while Duo’s built-in logs remain useful for routine authentication monitoring.

Explore firsthand feedback from Cisco Duo users. →

MetaDefender is OPSWAT’s advanced threat prevention platform, built to embed multi-layer file security into existing applications for organizations facing malicious uploads, untrusted file transfers, and file-based supply chain risk. I see it as especially relevant for teams handling high volumes of third-party file uploads; its 97% meets requirements score on G2 suggests it holds up well against that specific threat model.

Key features of MetaDefender:

• Adaptive sandbox detonates suspicious files to catch zero-day threats
• Threat Intelligence APIs flag malicious domains and IPs in files
• Rich metadata extraction exposes shadow data across cloud apps
• Reputation checks block reused malware and known bad indicators
• Supports 200+ file types for content sanitization

Pros of MetaDefender as per G2 reviewers:

• Multi-engine scanning catches what single-engine tools miss. Reviewers cite scanning across 30+ antivirus engines as the reason they trust MetaDefender to eliminate threats that other tools let through, and it’s backed by a 95% ease of use score.
• Deep CDR sanitizes files instead of just blocking them. Reviewers value the ability to rebuild and neutralize suspicious files rather than reject them outright, keeping legitimate work moving without requiring manual override requests.
• API-based integration fits into existing workflows. Reviewers highlight the ability to plug scanning directly into their own platforms with minimal setup, allowing real-time scanning to run in the background without disrupting operations.

Cons of MetaDefender as per G2 reviewers:

• Initial policy tuning takes real effort, especially with archives and mixed file types. Reviewers describe some overblocking of legitimate files during setup, but say accuracy improves once policies are properly configured.
• Feature coverage is narrower than that of larger antivirus suites. A few reviewers wish for broader detection engines and OS support, though most say the core scanning and sanitization performance more than makes up for it.

Explore firsthand feedback from MetaDefender users. →

DiskStation is Synology’s network-attached storage (NAS) platform, powered by DiskStation Manager (DSM), for organizations that want to store and manage files on infrastructure they control. Reviewers value its approachable management of RAID, backups, and folder permissions, while DSM adds AES-256 shared-folder encryption and snapshots to protect and recover sensitive data. I see it as especially relevant for teams that need tighter control over where data resides and who can access it; its 94% ease of admin score on G2 reinforces how manageable that control can be day-to-day.

Key features of DiskStation:

• AES-256, TLS 1.3 encryption for data in transit and at rest
• Immutable, WriteOnce storage for tamper-proof data retention
• User-level permissions restrict access per folder or application
• Passwordless and multi-factor authentication (Secure SignIn)
• Abnormal login detection with geolocation-based threat alerts

Pros of DiskStation as per G2 reviewers:

• Centralized storage keeps data and access under your control. Reviewers value managing business files in one place, with granular folder permissions and user-level access, rather than relying entirely on third-party cloud storage.
• DSM makes self-hosted storage easier to administer. Reviewers praise its intuitive interface and guided setup for managing RAID, shared folders, permissions, and other day-to-day tasks, backed by a 94% ease-of-admin score on G2.
• Backup and recovery capabilities provide an extra safety net. Reviewers highlight automated backups and snapshots for recovering files after accidental deletion or other data-loss events, making protection part of the same storage environment.

Cons of DiskStation as per G2 reviewers:

• Cloud sync can be inconsistent when moving large batches of files to major enterprise platforms, with occasional dropped transfers during peak hours. Though reviewers say this affects heavy hybrid workflows more than typical day-to-day use.
• Scaling storage requires physical hardware reconfiguration since there’s no automated capacity expansion, but reviewers note this trade-off comes with the added control and cost savings of owning the hardware outright.

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