Security FAQ
This section contains common questions regarding safety and reliability of the technology in the apps.
- Automatic Key Verification
- Is it private? Can I trust it?
- Does Signal send my number to my contacts?
- Supporting Older Operating Systems
- Signal Profiles and Message Requests
- What is a safety number and why do I see that it changed?
- How can I report a security vulnerability?
- Twilio Incident: What Signal Users Need to Know