Ref# ADV2025_65 | Date: Feb 25th 2025

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Signal has published a security advisory to address vulnerabilities affecting its products on February 19, 2025. It is recommended that you take the necessary precautions to ensure your products are always protected.

For more information on these updates, you can follow these URLs:

1. https://support.signal.org/hc/en-us/articles/360007059212-How-do-I-ensure-Signal-is-up-to-date 
2. https://www.cyber.gc.ca/en/guidance/security-considerations-qr-codes-itsap00141  
3. https://www.wired.com/story/russia-signal-qr-code-phishing-attack/ 
4. https://cloud.google.com/blog/topics/threat-intelligence/russia-targeting-signal-messenger/  

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.

PDF Download: Signal Security Advisory

References

• Signal Support. (2025, February 19). Retrieved from Signal. https://support.signal.org/hc/en-us
• Signal security advisory. (2025, February 21). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/signal-security-advisory-av25-099