Is ISI Labs Ltd secure?

Legit.Show measured ISI Labs Ltd's Security frame at 45/100. Security headers present: HSTS. Served over HTTPS with a valid certificate.

How does Legit.Show measure ISI Labs Ltd?

Legit.Show scores seven frames — Performance, Accessibility, Security, Privacy, Reliability, Standards and Discoverability — deterministically from the public surface (URL, HTTP headers, real Lighthouse), with no LLM in the scoring path. See legit.show/methodology.

Productivity

ISI Labs Ltd

Last updated 2026-09-21 · benchmark measured 2026-09-21 — deterministic & reproducible

Sealr is a messaging app that lets senders control who sees their messages and how.

90/100

7/7 frames

Top 13% of 14,148 measured · #2 of 11 in encrypted messaging app

Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.

Checked 2026-09-21 · scores move as sites change

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To cite this score: legit.show/s/sealr-chat/2026-09-21. That address never changes; this page moves with every re-measure.

Legit.Show scored ISI Labs Ltd 90/100 on 2026-09-21, measured across all 7 frames from its public surface. legit.show/s/sealr-chat/2026-09-21

Is ISI Labs Ltd production-ready?

Legit.Show scores ISI Labs Ltd 90 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on ISI Labs Ltd (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 98/100
Accessibility — 96/100
Security — 45/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 100/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 92/100
Discoverability — 100/100

What we measured

Security headers present: HSTS.
No Content-Security-Policy.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 77 ms to first byte.
Returns a proper 404 for unknown routes.
3 of 3 sampled routes reachable.
Has a reachable privacy policy.
Sets cookies / loads scripts with no consent prompt.

Who it's for

Privacy-conscious users · Individuals concerned about message permanence · People sharing sensitive content · Users wanting granular privacy controls

Sources and updates

Description: Taken from sealr.chat's own website on 2026-09-21.
Operator: ISI Labs Ltd, as named in sealr.chat's terms, privacy page or footer.
Benchmark: Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-21.

Put together from public information, without ISI Labs Ltd's involvement. If anything here is wrong, tell us and a person will check it.

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