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In this post, you find out how DNSSEC and DANE cooperate, and learn how to set up DANE TLSA DNS records. DNSSEC (Domain Name System Security Extensions) The domain name system (DNS) is the phone book of the Internet: it tells computers where to send and retrieve information. Unfortunately, it also accepts any address given to it, no questions asked. DNSSEC adds a security layer to this phonebook. It uses digital signatures to make sure the information in the phonebook can be trusted and hasn’t been tampered with....

Safe Links scans URLs in incoming messages and checks the links for malicious content at the time they are clicked. What you can manage with a Safe Links policy With a Safe Links policy, administrators can configure and manage this policy to protect users from clicking harmful links and being redirected to malicious websites. Safe Links provides URL scanning for links in email messages, Microsoft Teams, and supported Office 365 applications....

You can use Microsoft Purview to search for specific content in Exchange Online (or SharePoint Online) using Content Search and, if desired, initiate a purge process. This article provides instructions on how to do this. Before getting started Note that you can also use Threat Explorer in MDO to initiate a hard delete by performing a manual remediation. However, when using Threat Explorer, you are limited to 30 days, which is sufficient for most remediation scenarios....

Malware is specifically designed to harm or exploit devices, networks, or users. It includes various types of harmful software such as viruses, worms, trojan horses, ransomware, spyware, and adware. Malware can be distributed through email attachments, infected websites, malicious downloads, or other deceptive means. What you can manage with an Anti-malware policy Mailboxes in Exchange Online benefit from automatic protection against malware through Exchange Online Protection (EOP). EOP offers a multi-layered malware protection system designed to detect all known malware....

Phishing is an email attack that aims to steal sensitive information through messages that appear to be from legitimate or trusted senders. You can enhance the security of your Exchange Online mailboxes by implementing anti-phishing policies. What you can manage with Anti-phishing policies Anti-phishing policies provide enhanced control over incoming phishing emails, for instance, in cases where someone may attempt to impersonate your CEO or send messages from a domain that closely resembles yours....