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Our registration lock function protects against these kinds of attacks.
Enable registration lock by going into your Settings >> Account >> Registration Lock.
support.signal.org/hc/en-us/artic
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Signal
Signal
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Signal is an end-to-end encrypted messaging app. Privacy isn’t an optional mode, it’s just the way that Signal works. Every message, every call, every time.
signal.orgJoined May 2010
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Signal's commitment to your privacy –to building a product that protects your information from third parties including Signal–is what ensured that message history, profile info, contact lists, and other data were not vulnerable in this incident. FIN
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We have identified and are contacting the 1,900 potentially affected users. We are prompting them to re-register their Signal numbers and encouraging them to enable registration lock. We are also working with Twilio to ensure they upgrade their security practices. 3/
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Message history, profile info, contact lists, & other data were NOT & could not be accessed. The information attackers accessed could allow them to attempt to register a Signal user’s phone number on a new device if that user had not enabled registration lock. 2/
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Recently , which provides SMS verification services for Signal, suffered a phishing attack. Via Twilio, attackers may have accessed phone numbers & SMS registration codes for 1,900 Signal users. 1/
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What did you use before Signal?
- SMS and MMS71.7%
- Riseup2.7%
- PGP9.1%
- TextSecure & RedPhone
16.4%
3,477 votesFinal results
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Disappear by default 
Did you know that you can manage your settings so that any new chat you start has disappearing messages? If you want your messages to have a limited lifespan automatically, go Settings >> Privacy >> Select your default timer for new chats.
Did you know that you can manage your settings so that any new chat you start has disappearing messages? If you want your messages to have a limited lifespan automatically, go Settings >> Privacy >> Select your default timer for new chats.![Screenshot of Signal app settings page. Under the subsection of Privacy, is the setting for changing the default timer for new chats.](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="288" height="360"><rect fill-opacity="0"/></svg>)
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![Close up of screenshot of Signal app settings page. Under the subsection of Privacy, is the setting for changing the default timer for new chats.](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="680" height="383"><rect fill-opacity="0"/></svg>)
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We’ll keep yelling!
![Human and mystical characters from the film Totoro (including Totoro and the Catbus) standing in a green pasture with blue skies, all yelling together. Text above reads "Us reminding you that we shouldn't have to sacrifice privacy in order to connect with each other"](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="680" height="680"><rect fill-opacity="0"/></svg>)
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Planning your pizza order for movie night but forgot how many people want pepperoni versus veggie? If you're using Android, you can now tap the speech bubble icon next to a message to pull up all replies to that message and never lose the thread (or under-order on toppings)!
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Signal releases have entered the chat! Or, more accurately, created the chat. Say hi to the Signal release chat for Android users where we'll announce new features & improvements.
It’s muted by default. If you prefer not to see it, you can block the chat & we won't be offended.
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Here is your friendly reminder that we built Signal for private, secure communication. It’s built so you can communicate individually and in groups, through text and calls, without fear of interference or data collection. Free to use and not for profit.
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Internet Freedom Foundation (IFF)
@internetfreedom
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They are a 10 but they aren't on @signalapp. 
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Jeff Solin 
✶✶✶✶
✶✶✶✶@JeffSolin
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I wish @Apple Messages chat reactions were implemented like @signalapp’s. People have more than 6 emotional reactions to things.
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We don’t know much about you, but we have a *feeling* that you value secure & private communication! Donate to support the work that we’re doing at Signal:
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We’re seeing these rumors appear in messages forwarded on several different apps. These rumors are often attributed to official government sources and read “attacks on Signal platform.” This is false and Signal is not under attack.
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We've had an uptick in usage in Eastern Europe & rumors are circulating that Signal is hacked & compromised. This is false. Signal is not hacked. We believe these rumors are part of a coordinated misinformation campaign meant to encourage people to use less secure alternatives.
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Happy 
Day! Show your affection by becoming a Signal Sustainer. Open Signal and tap “Become a Sustainer” in settings.
Day! Show your affection by becoming a Signal Sustainer. Open Signal and tap “Become a Sustainer” in settings.40
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We definitely don’t know who your Valentine is or isn’t, but either way you can show your love however you want. Customize your reactions to your heart's content.
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You have more followers than you think. Our collaboration t-shirt with the awesome team is available now at shop.signal.org (w/free shipping worldwide).
![Image](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="360" height="334"><rect fill-opacity="0"/></svg>)
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Got a new phone number? You can now change the number you registered to Signal and keep your chat history, groups, and Signal profile.
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Fixed! Thank you everyone for your patience.
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Happy Friday! We are aware of some failures for people during registration, and are working on a resolution. Please hold tight, new folks! Everything else is up and running.
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Our latest Signal Desktop release has many performance improvements, and now runs way way way faster on Apple's M1 chips. If you're starting the new year with a new computer, try it out at78
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![Close up of screenshot of Signal app settings page. Under the subsection of Privacy, is the setting for changing the default timer for new chats.](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="240" height="135"><rect fill-opacity="0"/></svg>)
![Human and mystical characters from the film Totoro (including Totoro and the Catbus) standing in a green pasture with blue skies, all yelling together. Text above reads "Us reminding you that we shouldn't have to sacrifice privacy in order to connect with each other"](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120"><rect fill-opacity="0"/></svg>)
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