Start from a neutral baseline and add what matters to you. Criteria are labeled by source — the platform baseline is architecture-neutral; buyer-contributed criteria are shown separately.
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BYOK/HYOK or genuine end-to-end encryption is a materially stronger security posture than vendor-held keys with no customer control over decryption.
Controls that survive forwarding (e.g., revocable links, DRM-style protection) are materially stronger than permissions that only apply inside the platform's own interface.
Look for explicit IRM/DRM enforcement and a real external-access audit trail, not just logging of the sending organization's own internal users.
Strong answers explicitly address the cross-border sharing edge case, not just at-rest residency for internally-stored files.
No buyer-contributed criteria yet
Verified buyers can suggest criteria (anonymized before pooling).
Pre-share enforcement (block or require approval) is materially stronger than post-hoc detection or alerting after a sensitive file has already left the organization.
Automated, comprehensive revocation across all previously distributed links is materially stronger than a manual, error-prone per-file cleanup process.
A real, named-customer adoption figure matters — a security tool with low actual adoption doesn't reduce risk no matter how capable it is on paper.
Immutable, near-real-time, exportable logs are materially stronger than logs only viewable inside the vendor's own console with meaningful export lag.
Look for transparent, predictable pricing with explicit disclosure of any per-GB or large-transfer fees — hidden egress costs are a common pricing trap in file-sharing/storage products.
Strong answers describe a fast, specific forensic reconstruction capability with a real turnaround-time figure — this is the highest-stakes use case (a confirmed leak), not just preventive access control.
Large-file/high-volume transfer is a distinct performance challenge from typical small-document sharing — ask for specific measured figures at realistic large-file scale, not just small-file benchmarks.
High friction for external recipients (mandatory account creation, app install) reduces real-world adoption — ask for a measured completion-rate figure from a customer reference, not just a feature description.
Ask for an honest mobile-versus-desktop feature-parity comparison; a degraded mobile experience is a common real gap that should be disclosed rather than assumed away.
Look for a clear answer on this integration boundary; redundant, disconnected DLP enforcement between the file-sharing platform and the customer's broader DLP stack creates real policy-management complexity.
A real, documented API is materially more useful for a team wanting to build secure sharing into their own applications than being limited to the standalone product UI.
A ransomware event in the sharer's environment could otherwise propagate to or destroy shared files — ask for a specific answer on version history/immutability that provides real ransomware resilience for shared content.