Upon reading this again, you are technically accurate on this point. MetaCert can’t prevent people from sending DMs. But, the beta release which is being submitted to Slack today for review, *does* monitor DMs and immediately sends a follow-up DM via the app to inform the user that it’s a phishing attack. Furthermore, the MetaCert “Champion” who installed the app also gets a DM in less than half a second, telling them who sent the DM along with details of the link — this allows them to ban that user. Our next update will automatically ban users who send malicious links via DM.