Microsoft Purview: Configuring a Data Loss Prevention Policy

Organizations have sensitive information under their control, such as credit card numbers or social security numbers. To protect this sensitive information and reduce risk, organizations need a way to prevent users from sharing it with people who shouldn’t have it. This practice is known as data loss prevention (DLP). In this article, I will explain how to configure it. Sensitive information type entity definitions In this post, I will configure a DLP policy to block the Netherlands Citizen’s Service (BSN) Number from being shared with external contacts in Exchange Online and Teams....

December 16, 2023 · 3 min

Microsoft Defender for Office 365: Quarantine policies

Quarantine policies let you control the quarantine on how users can use it. This post will cover the default policies and how to create a custom policy. What are quarantine policies Back in April 2020, Microsoft made it possible for users to view, release, or delete quarantined messages (expect high confidence phishing). Some organizations were not happy about users having access to their own quarantined items. Quarantine policies give you more control over quarantine for your end users and which quarantined items they can release....

December 11, 2023 · 3 min

SPF, DKIM and DMARC explanation

In this post you will learn to understand how the DNS protocols SPF, DKIM and DMARC work together to protect your domain from phishers and spammers. Why deploy SPF, DKIM, and DMARC? SPF, DKIM, and DMARC are critical email authentication protocols that help prevent email spoofing, phishing attacks, and domain impersonation for outbound email. Enabling these protocols together strengthens your domain’s email authentication mechanisms, improves security, and builds trust with your recipients by ensuring that email sent from your domain is legitimate and trustworthy....

December 9, 2023 · 10 min