office 365 anti phishing best practices

This setting allows the specified action for impersonation detections by mailbox intelligence. This rating can be low, medium, high or very high confidence. When enabled, this setting will inform the user when they receive a mail from an unfamiliar address with the tip shown in Figure 3. To configure this setting, see Configure anti-phishing policies in Defender for Office 365. To enable all protection features, modify the default anti-phishing policy or create additional anti-phishing policies. Lets look at some settings that can be used to improve this. Anti-phishing protection plays an integral role in detecting and blocking phishing emails before they reach the users inbox, helping to keep an organizations information secure. If it seems like you are still receiving phishing attempts despite having active preventions in place, this threshold can be used to harden the protections. In traditional on-premises Exchange environments, enterprise IT teams can invest in solutions tostop phishing emailsand mitigate the threats of malware, spam, zero-day attacks and other security issues. to add an extra layer of security.

The tables contain the settings in the Microsoft 365 Defender portal and PowerShell (Exchange Online PowerShell or standalone Exchange Online Protection PowerShell for organizations without Exchange Online mailboxes). With so many configurable options within Defender for Office 365, it can be hard to know where to start. This is typically in the form of cryptocurrencies such as Bitcoin, in exchange for data access. If you have configured custom domains for your Microsoft Office 365 environment, you can also configure targeted, can help protect your business from any malicious. The Built-in protection column shows the values that are set by the Built-in protection preset security policy, which are also our recommended values. This article describes the default settings, and also the recommended Standard and Strict settings to help protect your users. This is particularly useful to help users stay vigilant and remind them when they receive a mail from an address they are not familiar with: I suspect this setting will become standard as part of the baselines in time, but its worth enabling manually until then to help users to detect potential spam or phishing attempts from unknown mailboxes. Messages are then treated differently based on the level of confidence assigned. Office 365 Advanced Threat Protection. By using anti-phishing protection, users and organizations can effectively protect themselves against the damaging effects of a phishing attack. In a report done by. For more information about these settings, see Spoof settings. Although the malicious document needs an extra step to be accessed compared to just being attached as it is, the additional [emailprotected] To automatically apply the Standard or Strict settings to users, see Preset security policies in EOP and Microsoft Defender for Office 365. Have a look at this thread: https://community.spiceworks.com/topic/2147005-exchange-transfer-rule-for-spoofed-emails, Education within all organizations is so key anymore because that's the only way to actually safeguard from the affects of phishing emails - Employee Training Techniques That Stick. However, the other available impersonation protection features and advanced settings are not configured or enabled in the default policy. Additional information on office 365 phishing protection can be found here. . Microsoft Office 365 provides a broad range of benefits for business email, but stopping Office 365 phishing threats and otheremail phishing scamsmay require help from a best-of-breed, third-party solution. I have created this video tutorial of Step by Step tutorial of the recommended configurations of Anti Phishing Policies in Office 365 Advanced Threat Protection. However, notifying internal senders when items are quarantined is good practice, but the most important configuration, in my opinion, is to notify admins when Malware is blocked in mail. To create and configure these policies, see Configure anti-phishing policies in Defender for Office 365. We like it spicy here! This can be prevented by configuring mail flow rules instead. With a leading cloud-based service for email security, archiving and continuity, Mimecast provides a powerful complement to Office 365, providing highly effective defenses against Office 365 phishing and other email-borne threats.

Attackers would be able to send you email that would otherwise be filtered out. All organizations should review, configure and tune the appropriate security settings in various areas of Microsoft Office 365s services to make sure the proper risk tolerance levels are met. elearning Ready to learn more about how you can protect your business from O365 attacks? Not nearly enough businesses have deployed sufficient security measures against phishing attacks through website builders and CMS platforms.Read Article on DarkReading >. We recommend adding domains (sender domains) that you don't own, but you frequently interact with. Similarly to the items above, this could pose a threat if there was a hacked account in your organization or another that you work with. When you log in, youll need to type a code from your mobile device in order to access Microsoft Office 365. EOP customers get basic anti-phishing as previously described, but Defender for Office 365 includes more features and control to help prevent, detect, and remediate against attacks. . This etting protects resources from unauthorized access when you forget to secure your workstation. Safe Attachment protection is not turned on by default, but it should be because this protection extends to all files in SharePoint, OneDrive, and Microsoft Teams. As with most of the thresholds in the Defender suite, the value set here depends highly on the organization, industry, and associated risk. Online Businesses Become a Phishers Playground Use Knowbe4 for user training. Your daily dose of tech news, in brief. Office 365 Advanced Threat Protection enables additional layer of protection against malicious URLs, Malicious Attachments and Phishing campaigns. Safe Links cannot protect against zero-day phishing threats. necessity , however, you can increase this protection when blocking attachments with commonly used malware file types. If you have configured custom domains for your Microsoft Office 365 environment, you can also configure targeted anti-phishing protection. Some best practices to follow are: The first layer of phishing protection is filtering, which uses a combination of machine learning and Microsoft-curated lists of known bad domains to block suspicious emails. Office 365 message encryption allows you to ensure only intended recipients can view the message content. The Default in custom column refers to the default values in new Safe Attachments policies that you create. Suspected Phishing attempts are assigned a rating based on the confidence that Defender has that the message is truly Phishing. For example, if Bruce.Wayne@contoso.com is a protected user and a user in our organization frequently communicates with Bruce.Wayne@fabrikam.com, the information gathered from mailbox intelligence will influence the phishing confidence of this scenario to lower the likelihood that the legitimate sender is seen as a phishing attempt. User Impersonation : User Impersonation configuration allows organization to list down their top executives like CEO, CFO, Directors etc and any emails coming with the exact same display name and going to users will be quarantined/delivered to Junk as per the configuration. chander girish phishing recommends Its important to learn how to configure and deploy these security features, and train employees, so you can protect your sensitive business data. For more information about Advanced Spam Filter (ASF) settings in anti-spam policies, see Advanced Spam Filter (ASF) settings in EOP. Youll notice that this isnt configured by the Configuration Analyzer. Its important to note that this doesnt specify who gets the policy assigned, that is done in the regular policy assignments. To learn more about Defender for Office 365 and other Office 365 Security topics, check out these articles: The Most Important Steps an Administrator Can Take to Make Exchange Online Secure by Default (practical365.com), How to train your users against threats with Attack Simulation Training (practical365.com)Office 365 Security Resources (practical365.com), Office 365 Security Resources (practical365.com). People often send, receive, and share attachments, like documents, presentations, and sheets. In a report done by Stanford, they found that approximately 88 percent of all data breaches are caused by an employee mistake. Both options can delay mail flow to allow for Defender to investigate the attachments. For more information, see Report messages and files to Microsoft.

[!NOTE]

- Be wary of unsolicited emails, even if they appear to come from a trusted source. There are several facets to Office 365s phishing protection.

The Office 365 environment includes malware protection, however, you can increase this protection when blocking attachments with commonly used malware file types. Externally, protected senders could include council members or your board of directors.

Creating an emergency access admin account can also be helpful in case a problem arises. This setting is part of ASF. Are you looking for best practices for Exchange mail flow rules (also known as transport rules)? , they found that approximately 88 percent of all data breaches are caused by an employee mistake. To address the severity of human error, organizations have made investments in Office 365 security and awareness training. As described earlier, there is no default Safe Attachments policy, but Safe Attachments protection is assigned to all recipients by the Built-in protection preset security policy. What's the current recommendations for standard protection? up. This can also be called 2-step verification. Specifically, the Get-ORCAReport cmdlet generates an assessment of anti-spam, anti-phishing, and other message hygiene settings. Also append .doc emails with a warning (especially of late). Business email compromise (BEC): This type of office 365 phishing attack targets businesses that use office 365 for email and other communications.

When the feature is enabled, files that open in Protected View will be scanned before the user can click through to enable editing. Use these links for info on how to set up your EOP service, and configure Microsoft Defender for Office 365. These tools include the ability to search logs, view activity reports, and take action on suspicious emails. Office 365.

This feature clearly marks all external emails as External in order to alert mail users to be cautious with the attachments and contents of the message. This setting extends the Mailbox Intelligence functionality to mails that are protected via Impersonation Protection to help improve the reliability of results. Example Analysis of Multi-Component Malware, How the War in Ukraine Has Influenced the Scammers Underground. to the sender's photo in Outlook for unidentified spoofed senders. Dive deep into Azure AD Connect and Azure Group Writeback to understand how it works with the attribute flow and learn some possible use cases for it. The baselines via Configuration Analyzer will protect the accepted domains in your organization but any critical partner or supplier domains should be added. All trade/service marks or names referenced on this site belong to their respective owners. I would say to configure anti-spam and anti-phishing policies may helpful.Also following some recommendations provided in article meanful https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/tuning-anti-phishingSafe days!

For more information, see Safe Attachments in Defender for Office 365. The specifics can be found here. For example, a mail purporting to be from the CFO of an organization, requesting an update of payment details urgently can often pressure recipients into acting quickly, before considering the validity. Internally, protected senders might be your CEO, CFO, and other senior leaders. We have no specific recommendation for this setting. Attackers can use malicious websites links in email or other files. [!NOTE] Either way, admins can modify these global Safe Links settings at any time. to address sophisticated threats like business email compromise and targeted phishing. Tips to Help Keep Office 365 Secure Against Breaches. [!NOTE] Recently, I wrote an article around how you can get started with Configuring Microsoft Defender for Office 365 using Microsofts Preset Security Policies and Configuration Analyzer. For the latest news and information, you can see What's new in Defender for Office 365. This is typically in the form of cryptocurrencies such as Bitcoin, in exchange for data access. Microsoft Office 365 has a variety of effective built-in security features but it often needs specialized add-ons to address sophisticated threats like business email compromise and targeted phishing. The information contained herein is subject to change without notice. Don't forget the helpful directions in 'Protect Against Threats in Office 365'. The Default in custom column refers to the default values in new Safe Links policies that you create. The setting is available under the Actions section of the Anti-Phishing Policy. To configure these settings, see Configure anti-phishing policies in Defender for Office 365. We have no specific recommendations for these settings. The default value 0 means use the service defaults.

This setting is related to Safe Documents. This can occur without the users awareness. For eg. Learn more about preventing Office 365 phishing with Mimecast, and about solutions forvirus ransomware. The global settings for Safe Links are set by the Built-in protection preset security policy, but not by the Standard or Strict preset security policies. There are times when scanning cant be performed on a particular file due to encryption, back-end errors, or timeouts. So, to help keep things clear, Ill break them down into the following major sections: For context, Ill start with the assumption that the standard Microsoft recommendations have been applied or reviewed across the board through Configuration Analyzer. If you have not configured custom domains, you will not need to do this. You can download the ORCA module at https://www.powershellgallery.com/packages/ORCA/. The Default column shows the values before the existence of the Built-in protection preset security policy. As a "first aid" configuring anti-spam/phishing policy+allowed domain/ip list+audit log switching on may help to filter big amount of incoming mails.As second stage is SPF/DKIM/DMARC, Security score updates, if hydrid - checking connectors.And it's never enough :-), This works very well to filter a great deal of stuff - we never get any good from .ph, .br, .top, .info etc. I dont recommend ever notifying an external sender when anything is blocked, because you are potentially exposing information about your configuration that you dont need to. Best practices in configuring Office 365 Safe Attachments. When configuring Anti-Phishing Policies with the Microsoft baselines in place, information relevant to your organization such as specific users and domains to protect is not being used by default. - Keep your software up to date, including office 365 and your anti-virus program.

Likewise, if you are getting too many false positives, it may be worth considering a lower threshold for your organization. Exchange Online Protection (EOP) is the core of security for Microsoft 365 subscriptions and helps keep malicious emails from reaching your employee's inboxes. [!NOTE] Please visit our Privacy Statement for additional information. There are several notifications that can be configured for the Anti-malware policy to notify the different parties. For the list of file types, see. The user has read-write access to a few network shares (mapped drives on server).What kind Webinar: Rimini Street-SAP Decisions to make for 2023 - Know your Options, SAP Decisions to make for 2023 - Know your Options, https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/tuning-anti-phishing, https://community.spiceworks.com/topic/2147005-exchange-transfer-rule-for-spoofed-emails, Tips to Help Keep Office 365 Secure Against Breaches. It is considered the worlds most popular office suite of productivity tools. If the file is detected as malicious, users will not see the Enable Editing option and will see a message similar to the one in Figure 6: There is the option to Allow people to click through Protected View even if Safe Documents identified the file as malicious but I would recommend against ever enabling this outside of testing. With a passion for creative problem solving, he enjoys developing solutions for business requirements by leveraging new technologies or by extending the built-in functionality with automation. Blogs frequently at, Anti-Phishing Policy: Enable Users and Domains to Protect with Impersonation Protection, Anti-Phishing Policy: Enable Mailbox Intelligence Impersonation Protection, Anti-Phishing Policy: Enable First Contact Safety Tips, Anti-Malware Policy: Common Attachments Filter, Anti-Malware Policy: Configure Notifications, Safe Attachments Global Setting: Turn on Safe Attachments for SharePoint, OneDrive and Teams, Safe Attachments Global Setting: Turn on Safe Documents for Office Clients, Safe Attachments Policy: Enable Dynamic Delivery for non-Hybrid Environments, Safe Attachments Policy: Apply the Safe Attachments detection Response if scanning cant complete, ASF settings as part of Anti-Spam policies are being deprecated, How to train your users against threats with Attack Simulation Training (practical365.com), Teams get big features improving usability & security, and Microsoft Ignite is back in-person: Practical 365 Podcast S3 Ep. Use Safe Links in supported Office 365 desktop and mobile (iOS and Android) apps. Within the Safe Attachments Global Settings, you have the option to enable Safe Attachments for SharePoint, OneDrive and Teams. Spear phishing: This type of office 365 phishing attack is targeted at a specific individual or organization.

Use proactive anti-malware protection, which filters and blocks malicious links.Set up SPF in Office 365 to help prevent spoofing and use DMARC to validate email in Office 365.Use the malware filter and transport rules to block known bad extensions. Not nearly enough businesses have deployed sufficient security measures against phishing attacks through website builders and CMS platforms. I wont go through every possible setting here, but I will highlight the most important aspects to review when modifying the configuration from baselines and the reasons to consider each configuration option.

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office 365 anti phishing best practices