The New Playground for Cybercriminals: Securing the Microsoft Teams Frontier

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With 320 million daily users on Microsoft Teams, the ability to connect with colleagues across the organization has never been more seamless… or more targeted.

The shift isn’t just about where we talk; it's about how we are being attacked. Threat actors moving beyond phishing emails and are infiltrating into the trusted spaces where your employees feel safest. 

Starting in 2023, hackers began shifting their focus to Microsoft Teams with massive success, exploiting a high-trust environment where users are significantly more likely to comply with deceptive, urgent requests. By 2025, threat actors introduced callback phishing and voice phishing (vishing) as preferred methods to manipulate employees directly through Microsoft Teams. 

Because of the level of sophistication in these attacks, relying solely on native anti-phishing rules has proven risky. Recent logic errors in these heuristic systems have caused significant operational disruptions, mistakenly blocking thousands of legitimate work messages and critical links.

Introducing the Microsoft Teams Phish Alert Button (PAB)

To meet these escalating threats, KnowBe4 is extending our defenses into the collaboration space. The Microsoft Teams Phish Alert Button allows your workforce to remain vigilant outside the inbox and report suspicious activity using the same workflow you’ve already trained them to use.

By adding the Microsoft Teams PAB to your arsenal, your organization gains:

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CISA orders feds to patch actively exploited Citrix flaw by Thursday

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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) ordered government agencies to patch their Citrix NetScaler appliances against an actively exploited vulnerability by Thursday. [...]
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Tax Filing Scams Used to Deliver Malware in New Cybercrime Campaigns

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Cybercriminals are once again exploiting global tax seasons, abusing IRS and tax filing lures to deliver malware, remote monitoring and management (RMM) tools, and credential phishing in a wave of new 2026 campaigns. Security researchers have already tracked more than a hundred tax-themed operations worldwide, with a noticeable increase in the use of legitimate RMM […]

The post Tax Filing Scams Used to Deliver Malware in New Cybercrime Campaigns appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.



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Iranian hackers breach FBI director’s personal email, and post his CV and photos online

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It's not every day that you read that the head of America's top law enforcement agency has been hacked, but then - these aren't ordinary times. Read more in my article on the Hot for Security blog.

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Dutch Finance Ministry takes treasury banking portal offline after breach

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The Dutch Ministry of Finance took some of its systems offline, including the digital portal for treasury banking, while investigating a cyberattack detected two weeks ago. [...]
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Employee Data Breaches Surge to Seven-Year High

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Analysis from law firm Nockolds suggests non-cyber incidents are driving up employee data breaches
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