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Attributed metadata history

REPORTPUBLIC METADATA

Technology preview: Private contact discovery for Signal

At Signal, we’ve been thinking about the difficulty of private contact discovery for a long time. We’ve been working on strategies to improve our current design, and today we’ve published a new private contact discovery service. Using this service, Signal clients will be able to efficiently and scalably determine whether the contacts in their address book are Signal users without revealing the contacts in their address book to the Signal service. Read more...

Reference details

Source category
research-report
First reported
Sep 26, 2017 00:00 UTC
Last reported
Sep 26, 2017 00:00 UTC
Catalog updated
Oct 16, 2026 21:16 UTC
Record ID
437b663d426efca6bfeccd024d8de2da9c2ccf90f1bfca9a34609cb17d139ea4

Published indicators

Network indicators are visibly defanged. This page does not make them clickable or send them to another service.

No validated file hashes or network indicators are stored for this record.

Source observations

intelligence_src_1b0ea7addf33a18b0f

Source-provided label
Publisher RSS metadata
Evidence class
mentioned in report
Confidence
Not reported
Observed
Sep 26, 2017 00:00 UTC
Retrieved
Oct 16, 2026 21:16 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

Feed collection status

Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.

1 sources: 0 stale, 0 needing attention, 0 paused, 0 unverified.

Review source update dates and status
  • intelligence_src_1b0ea7addf33a18b0fRecent successful batchLast successful batch: Last attempt:

Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.