SPF, DKIM and DMARC – How do receiving/recipient mail servers know how and when to validate the mail?

I have spent a bit of time researching SPF, DKIM and DMARC mechanisms however If I understand correctly, these help the recipient to confirm whether the domain is legitimate but only if they have these mechanisms configured c… Continue reading SPF, DKIM and DMARC – How do receiving/recipient mail servers know how and when to validate the mail?

Missed DNS Flag Day? It’s Not Too Late to Upgrade Your Domain Security

Whether or not you plan on using DNS cookies or DNSSEC, foreseeing an upgrade plan for your software to the latest version made available as part of DNS Flag Day is highly advised.

The post Missed DNS Flag Day? It’s Not Too Late to Upgrade Your Domain Security appeared first on Security Intelligence.

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Digital Signatures in PDFs Are Broken

Researchers have demonstrated spoofing of digital signatures in PDF files. This would matter more if PDF digital signatures were widely used. Still, the researchers have worked with the various companies that make PDF readers to close the vulnerabilities. You should update your software. Details are here. News article…. Continue reading Digital Signatures in PDFs Are Broken