Overview — What this review covers

This update (August 2026) revisits Authentic8's Silo, the cloud-executed browser isolation platform long positioned for enterprise use. Key specs at a glance:

  • Delivery model: Cloud-hosted browser sessions with pixel or DOM streaming to endpoints
  • Primary controls: Per-user/site policies for downloads, clipboard, printing, session recording, and file sanitization
  • Integrations: SSO (SAML/OIDC), SCIM provisioning, SIEM/XDR forwarding, DLP and CASB connectors
  • Licensing: Per-user and concurrent-session options; tiered features for audit retention and advanced sanitization
  • Typical use cases: Regulated industries, contractor/third-party browsing, open-web research

Background — who makes Silo and who it’s for

Authentic8 developed Silo to isolate risky web content from corporate endpoints by executing browsing sessions remotely and delivering interaction streams to users. The product targets security teams in mid-size to large enterprises that need auditable, policy-driven separation of web risk: financial services, healthcare, legal, government, and organizations that give external contractors or analysts web access without exposing endpoints.

Features analysis — what’s new and what matters in 2026

Between 2024 and 2026 the isolation market matured in three practical ways that affect Silo deployments:

  1. Deeper telemetry and analytics: Vendors, including Silo, have expanded telemetry exports and introduced higher-fidelity session metadata (URL lineage, file-hash trails, click-paths) to feed SIEM/XDR pipelines. That makes isolation platforms more useful for automated detection and response workflows.
  2. Edge and data-residency options: Customers now expect regional egress nodes for GDPR, financial-data locality, and latency reasons. Silo’s architecture supports multiple egress points and configurable data-retention for session recordings.
  3. Better media and collaboration handling: Improvements in selective passthrough, local client fallbacks, and adaptive DOM streaming have reduced friction for real-time collaboration apps—though tradeoffs remain for high‑frame‑rate GPU workflows.

Specific capabilities to evaluate in Silo (and any isolation platform) today:

  • Isolation modes: Pixel vs. DOM streaming—DOM gives lower bandwidth and copy/paste fidelity; pixel is safest for unknown content. Silo supports both with tunable policy per URL or group.
  • File handling & sanitization: Inline rasterization of documents, macro-stripping, PDF flattening, and OCR options. Confirm whether the product supports targeted sanitization for industry-specific file types (e.g., XBRL).
  • Policy depth: Per-user, per-site, and per-session policies for uploads, downloads, clipboard, developer tools, and screen capture. Role-based admin controls and delegated policy scopes are critical for large orgs.
  • Integration surface: SSO (SAML/OIDC), SCIM, SIEM connectors (Syslog/CEF), DLP/CASB APIs, and automation endpoints (REST, Terraform providers). Verify tested integrations with your IdP and DLP vendor.
  • Observability: Searchable session recordings, exportable audit artifacts, and hooks for automated forensic collection. Note: isolation logs are complementary to network captures, not replacements for packet-level diagnostics.

Pros and cons — balanced assessment with examples

  • Pros
    • Robust policy granularity that enables differentiated trust levels (researchers vs. finance users).
    • Session recording and file-trail artifacts that simplify post-incident forensics and regulatory audits.
    • Expanded regional egress options reduce latency and help meet data residency requirements.
    • Practical integrations with enterprise IdPs and DLP/CASB toolchains make Silo feasible in complex environments.
  • Cons
    • Media-heavy and GPU-accelerated workloads (video production, 3D CAD) still perform better on local hardware; expect exceptions and fallback patterns.
    • Operational costs can rise unexpectedly from session recordings, long retention, and cross-region egress fees.
    • Effectiveness depends on correct policy configuration—misconfigured allow rules can reintroduce risk.

Pricing & value — what to budget for

Authentic8 offers both per-user and concurrent-session licensing models; features such as extended session recording retention, dedicated egress regions, and advanced file sanitization are typically gated to higher tiers. Market-observed ranges in 2026 (subject to vendor quote and volume discounts):

  • Entry/basic tiers: commonly seen between $20–$60 per user per month.
  • Enterprise tiers with session recording, extended retention and advanced sanitization: frequently in the $45–$120 per user per month range.
  • Concurrent licensing and heavy-eavesdrop/egress scenarios: pilot or minimum-contract pricing often applies (e.g., multi-thousand-dollar monthly minimums for small deployments).

Practical budget advice: run a 60–90 day pilot with representative high-risk cohorts to measure egress bandwidth, session-recording storage, and admin overhead. Model both per-seat fees and recurring storage/egress to produce an accurate TCO for your planned rollout.

Who it’s for — ideal customers and use cases

  • Best fit: Regulated enterprises that require auditable web sessions and separation of web risk from managed endpoints (banks, insurers, legal firms, healthcare).
  • Good fit: Organizations that provide contractor or third‑party web access, security teams performing open-web investigations, and companies adopting zero‑trust browser strategies.
  • Not ideal: Teams requiring sustained local GPU access, high-frame-rate media editing, offline workforces, or employees with frequent use of large file sync that needs native OS access.

Alternatives — comparable vendors to evaluate

  • Menlo Security (browser isolation with strong enterprise features)
  • Cloudflare Browser Isolation (edge‑centric isolation, attractive for CDN/SASE integration)
  • Microsoft Edge Application Guard + Defender for Cloud Apps (endpoint and cloud combination for Windows-centric fleets)

Recommendations — deployment and integration best practices (Aug 2026)

  1. Start with high‑risk cohorts: contractors, research teams, and internet-facing ops users—measure latency, bandwidth, and file-flow patterns.
  2. Integrate early with DLP and identity: feed isolation events to DLP and XDR for automated response and to prevent sanctioned exfiltration paths.
  3. Design policy least-privilege by task: prefer pixel rendering for unknown/untrusted sites, use DOM streaming for trusted SaaS to reduce latency.
  4. Plan data residency and retention: map regulatory requirements up front—session recordings can be sensitive data that must be retained or purged per policy.
  5. Monitor costs continuously: instrument session recording and egress usage in billing dashboards to catch cost drift early.

Final verdict

Authentic8 Silo remains a mature, practical solution for enterprises that need to remove client-side web risk and add auditable controls to browsing. In 2026 its strengths—policy granularity, session forensics, and integration surface—make it a credible component of a zero‑trust browser strategy. It is not a universal replacement for local browsers: media/GPU workloads and certain real-time collaboration scenarios will still require exceptions or client fallbacks. For security teams seeking measurable risk reduction for high-risk cohorts, Silo is worth piloting; for enterprise-wide adoption, pair it tightly with DLP, IdP, and telemetry pipelines and budget for egress and retention costs.

FAQ

Will Silo block all browser-based malware and phishing?

Silo greatly reduces the risk of client-side exploitation by keeping active code and files in the cloud, preventing drive‑by downloads and many browser-based exploits from reaching endpoints. However, it does not eliminate phishing risk tied to credential theft or deliberate user action—identity controls (MFA, device posture) and user training remain necessary.

How does Silo affect user experience for SaaS apps like Salesforce or Office 365?

For traditional SaaS apps, DOM streaming modes and tuned compression typically deliver near-native responsiveness. Admins can create per-site policies that allow greater fidelity for trusted SaaS while maintaining strict isolation for unknown or risky sites.

What should security teams watch for in terms of costs?

Major cost drivers are per-user licensing tier, session-recording retention, and cross-region egress bandwidth. Track these during a pilot, and implement retention lifecycle policies to avoid unbounded storage growth.

Can Silo replace endpoint protection or a CASB?

No. Silo complements endpoint protection and CASB/DLP tooling by removing a class of client-side risks and producing audit artifacts. It should be part of a layered (defense-in-depth) approach alongside endpoint hygiene, identity safeguards, and cloud access controls.