"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
This article explains how to add a critical extension to a newly generated certificate in SafeGuard LAN Crypt Administration 3.80 and above.
The SafeGuard LAN Crypt Administration component can generate self-signed certificates. These certificates can only be used by SafeGuard LAN Crypt. The certificates also have a critical extension to show applications that they must not be used. These are simple certificates (comparable to Class-1 certificates) which comply with the X.509 standard.
In SafeGuard LAN Crypt you can configure whether or not a critical extension is added to a newly generated certificate or not.
Known to apply to the following Sophos product(s) and version(s) SafeGuard LAN Crypt Administration 3.80SafeGuard LAN Crypt Administration 3.90.0
Note: The Microsoft Standard CSP (Microsoft Base CSP) cannot be used.
If you have any questions about the compatibility of other CSPs, please contact the support team.
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