Signal Security Concerns

The cluster focuses on debates about the trustworthiness, security, privacy, and design choices of the Signal messaging app, including criticisms of its centralization, phone number requirement, cryptocurrency integration, and defenses from its developers.

➡️ Stable 0.8x Security
5,598
Comments
15
Years Active
5
Top Authors
#4953
Topic ID

Activity Over Time

2010
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2015
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2016
377
2017
221
2018
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2019
208
2020
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2021
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2022
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Keywords

POS HN twitter.com IS ROFL i.e HODL NSA medium.com TFA signal secure phone security backdoor cryptocurrencies whatsapp cryptocurrency server communication

Sample Comments

Is Signal fighting it? What's to stop this from happening?

barnaclejive May 5, 2021 View on HN

Signal is pushing back on these claims: https://twitter.com/signalapp/status/1389767227570798595

yifanl Jun 5, 2025 View on HN

Sure. If you don't trust Signal to not do that, then you likely aren't using Signal.

shagunsodhani Dec 25, 2021 View on HN

Tweet thread from Signal's founder (that touches on some topics in the article) https://twitter.com/moxie/status/1474067549574688768

tptacek Dec 23, 2016 View on HN

"The glaring security problems in Signal"?

SnowHill9902 Aug 16, 2022 View on HN

How much can one trust Signal for secure communication?

qqii Apr 7, 2021 View on HN

Similarly dissapointed but looking at Signal's past choices (barely open source server, no plans to federate, aggression against modified clients, extensive use and lack of criticism for SGX) monero wasn't even on the table.

throwinawaysoon Feb 24, 2020 View on HN

it is realistically selfish. Also Signal app/server is open-source. Anyone could churn up a server and fly under the radar.

tptacek Jan 3, 2026 View on HN

I wrote TFA. Signal is a nonprofit. The article says to use Signal-protocol-based messengers, of which there are several. Your objection about money doesn't make sense.

Signal doesnt have a backdoor. You might be misguided By the media. Signal is one of the best software and foundations to exist. Period.