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  • Slack, Teams, and Chat: The New Phishing Frontier

Slack, Teams, and Chat: The New Phishing Frontier

February 11, 2026

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Messaging Platforms Are the New Email

Internal chat tools have replaced email for day-to-day communication — but they’re rarely secured with the same scrutiny. That’s a problem attackers now exploit.

Shared Channels Spread Risk Across Companies

Slack Connect and Teams Guests link different orgs. If one company is compromised, malware, phishing links, and malicious files spread seamlessly through trusted chat.

Chatbots Can Be Abused to Deliver Payloads

Malicious apps or integrations with too much scope can read messages, upload files, or inject code into conversations. Once installed, they operate like insiders.

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Impersonation Inside Chat Is Easy

Attackers who gain access can change display names, photos, and bios. They mimic real team members — asking for credentials, links, or urgent actions.

Sensitive Data Gets Shared Casually

Passwords, secrets, customer info, links to internal tools — all get posted in chats. These messages live forever unless retention policies are in place.

Secure Chat Like You Secure Email

Enforce MFA, restrict external access, scan messages for risky content, and monitor bot behavior. Collaboration tools are powerful — and increasingly dangerous.

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