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From September 2020 the security certificates used to enable HTTPS communications can only be valid for a maximum of 13 months, says Apple. Since the Apple Safari browser enjoys a 17% market share, this restriction will likely force the whole industry to adopt the same limit in certificate lifespan. The Certificate Authority Browser Forum (CABRead more

Microsoft has released a patch to a remote code execution vulnerability in Exchange server which is being actively targeted. CVE-2020-0688 is a flaw in the installation procedure resulting in all Exchange Servers using the same cryptographic keys for ASP.NET ViewState data.  A detailed write-up by the Zero Day Initiative demonstrates the flaw in action. In summary:Read more

Mitre ATT&CK helps security managers defend their networks by providing a framework for categorising the techniques and tactics used in real world cyberattacks. Founded in 2013 in order to document the common threats, tactics and procedures used to attack Windows networks, Mitre ATT&CK has gathered data and telemetry on real world attacks which can beRead more

A bug has been found in the SUDO command which can allow an attacker to gain root privilege on Linux and Unix systems, even for users that do not have permission to run SUDO. SUDO is a security tool used daily in most organisations.  SUDO allows users to execute a specific command with escalated privilegeRead more

A remote code execution vulnerability in the Zigbee protocol allowed researchers to hack a Hue smart bulb and use that as a beachhead to compromise an entire network. Security Researchers at Check Point have demonstrated how to exploit a vulnerability in a Philips Hue smart bulb (CVE-2020-6007) and then pivot to compromise the Hue hubRead more

Several critical switch vulnerabilities that could allow an attacker to break network segmentation have been patched by Cisco. Dubbed CDPwn by the researchers at Armis who discovered the flaws, the vulnerabilities exists in a Level 2 networking protocol called Cisco Discovery Protocol (CDP). Network segmentation is an effective security strategy that isolates data and systemsRead more

Ragnarok ransomware is leveraging unpatched Citrix ADC servers and Windows computers to attack its victims. Citrix have now released a patch for CVE-2019-19781 and made it available to all clients – regardless of the status of their support contract. However, unpatched Citrix systems are being actively targeted with Ragnarok according to security firm Fireye. CVE-2019-19781 isRead more