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  • Exchange Online Protection adds tools to fight spammers

    Secure your email with EOP tools like DKIM and DMARC that verify incoming messages aren't spam or spoofs. Avoid unauthorized email with digital signatures and authenticated domains. Continue Reading

  • How can enterprises defend against digitally signed malware?

    Malicious software using legitimate digital certificates is reportedly on the rise. Expert Nick Lewis explains how to mitigate the risks of digitally signed malware. Continue Reading

  • Will TLS 1.3 solve the problems of certificate authorities?

    Transport Layer Security (TLS) and Secure Sockets Layer (SSL) cryptographic protocols have long been the cornerstone of Web application security, and the whole process finds its root (quite literally) in a system of signed certificates. The trouble is this security system has turned into a vulnerability. Too often an enterprise possesses a hodgepodge of signed certificates from various Certificate Authorities (CAs) that are thrown into the directories of protected services, and then often forgotten until they expire. Worse yet, recently hackers have managed to create fake certificates. CAs -- once a seemingly effective answer to ensuring Web security -- are now providing an attack surface for hackers to take advantage of.

    This technical guide surveys the CA landscape, opening with a field report on the latest CA security issue, the problem of fake certificates. To help explain the nature of this threat, our second chapter delves into the certificate system, current problems with it, and what enterprise IT staff can do. This guide’s closing chapter examines industry efforts to cope with the threat: TLS 1.3. Through this guide, IT professionals, and especially those concerned with network security, will learn the latest about TLS/SSL security. Continue Reading

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