matrix.org/static/jira/browse/SPEC-256

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summary: Auto-showing images/content is a security risk, especially over federation
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created: 2015-11-01 21:53:30.0
creator: neb
description: |-
Submitted by @matthew:matrix.org
Clients which auto-show thumbnails (i.e. all graphical ones) currently force the local HS to cache the remote content. Thus malicious content can be easily pushed (rather than pulled) over federation. We should either send blurred thumbnails or something or just provide option on graphical clients to only load (and thus mirror) on demand. Or possibly sidestep mirroring entirely.
id: '12062'
key: SPEC-256
number: '256'
priority: '2'
project: '10001'
reporter: neb
status: '10100'
type: '1'
updated: 2016-10-28 16:27:46.0
votes: '0'
watches: '2'
workflowId: '12165'
---
actions:
- author: richvdh
body: 'Migrated to github: https://github.com/matrix-org/matrix-doc/issues/562'
created: 2016-10-28 16:27:46.0
id: '13370'
issue: '12062'
type: comment
updateauthor: richvdh
updated: 2016-10-28 16:27:46.0