About Signal
Signal is a cross-platform encrypted messaging service developed by the non-profit Signal Foundation and Signal Messenger LLC. It was created by Moxie Marlinspike and Brian Acton (co-founder of WhatsApp) in 2018, building on Marlinspike's earlier work with Open Whisper Systems and the TextSecure app dating back to 2010. Headquartered in Mountain View, California, Signal is widely regarded as the gold standard for private communication, using the open-source Signal Protocol for end-to-end encryption that is also used by WhatsApp, Google Messages, and Facebook Messenger.
The Signal Logo
Signal's logo is a white speech bubble with a blue background, featuring a distinctive curved line that resembles a signal wave or a stylized check mark inside the bubble. The design is intentionally simple and clean, reflecting the app's focus on straightforward, private communication without unnecessary frills. The blue color palette conveys trust and security. The logo was updated in 2020 to a slightly more refined and modern version of the speech bubble.
Quick Facts
Brian Acton donated $50 million to create the Signal Foundation after leaving WhatsApp
Edward Snowden publicly endorsed Signal as his messaging app of choice
Signal's encryption protocol is used by WhatsApp, Facebook Messenger, and Skype
Signal saw a 4,200% spike in downloads after WhatsApp's 2021 privacy policy update
What Does Signal Do?
Signal operates in the technology and software industry and is accessible at signal.org. The company is recognized as end-to-end encrypted messenger. Signal's brand identity is built around its distinctive logo — blue speech bubble with dot — which has become widely recognized across the technology sector.
As part of the broader technology landscape, Signal competes alongside other well-known brands in the space. The company's logo serves as its primary visual identifier and is designed to work effectively across all digital and physical touchpoints — from mobile app icons and website favicons to marketing materials and product packaging.
Frequently Asked Questions
What does the Signal logo look like?
The Signal logo is described as blue speech bubble with dot. It is a symbol-only logo that does not include the company name text, making it a strong standalone visual mark.
What category does Signal belong to?
Signal is categorized under Technology in our logo quiz. The technology and software sector includes many well-known brands with distinctive visual identities.
What is the Signal website?
The official Signal website is signal.org.
Can I test my knowledge of the Signal logo?
Yes! Signal is one of 271 logos featured in our Logo Quiz. You can also try Practice Mode to learn at your own pace with no timer.
Can you identify the Signal logo?
Test your knowledge with our Logo Quiz featuring 271 company logos!
