A change was made in Thunderbird 115.0 that rejects the use of the SHA-1 algorithm in digital signatures of S/MIME emails. Read more to learn about this important change, and how it might affect certain users.
Our journey to transform K-9 Mail to Thunderbird for Android involves more than just improving the user interface and adding new features. K-9 Mail is already an important part of the open source ecosystem on Android, and because it lays the foundation for the future of Thunderbird on Android, we believe it’s important to invest in the security health of the software.
Yesterday, researchers and the press shared information describing security vulnerabilities that would enable an attacker to gain access to the plaintext of encrypted Emails. To understand how this happens, the researchers who uncovered EFail provide a good description on their website: In a nutshell, EFAIL abuses active content of HTML emails, for example externally loaded […]
