Jay Ferron's blog

    E-mail changed the communication world forever, allowing for instant communication as opposed to what is now commonly referred to as “snail mail”. When it was designed, security was not really a concern that was built in. Over time cryptographic methods were developed to help communicators verify the authenticity of senders through electronic signatures, such as the OpenPGP and Signed Multipurpose Internet Mail Extensions (S/MIME) standards.

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   Macro enabled Office documents are a useful tool for automating advanced calculations in document files but they have a long history of abuse as well. They are easy to spot as documents containing embedded Visual Basic for Applications (VBA) code have a ‘m’ at the end of the filename, e.g .xlsm or .docm. When opening these files Microsoft Office asks if you would like to enable the embedded macros, and for good reason. They can be used to run malicious code on a target system or infect the computer with malware.