Microsoft Teams

Microsoft Teams Relay Servers Abused in DragonForce Ransomware Attack

DragonForce, Malware, Malware & Threats, Microsoft Teams, Ransomware /

Microsoft Teams Relay Servers Abused in DragonForce Ransomware Attack 2026-06-17 at 13:38 By Ionut Arghire The attackers deployed a new Go-based backdoor that uses Microsoft Teams servers for command-and-control. The post Microsoft Teams Relay Servers Abused in DragonForce Ransomware Attack appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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Cybercriminals mask malicious communications through Microsoft Teams relays

backdoor, cybercrime, Malware, Microsoft Teams, News, Ransomware /

Cybercriminals mask malicious communications through Microsoft Teams relays 2026-06-16 at 17:22 By Sinisa Markovic The DragonForce ransomware group used a custom malware called Backdoor.Turn to hide command-and-control traffic inside Microsoft Teams relay infrastructure during an intrusion at a U.S. services company, according to Symantec. DragonForce is a ransomware-as-a-service operation that has been active since 2023.

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Your work apps are quietly handing 19 data points to someone

Android, BYOD, data, data collection, data security, Gmail, Google Play, Microsoft Teams, News, Privacy, Slack, software, Workday /

Your work apps are quietly handing 19 data points to someone 2026-05-04 at 09:46 By Mirko Zorz Office work in 2026 runs through a stack of mobile apps that sit on the same phones people use for banking, messaging family, and tracking their location. Ten of the most common workplace apps in use across U.S.

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Microsoft working on Teams feature to help admins block unauthorized bots

bot, cybersecurity, Microsoft, Microsoft Teams, News /

Microsoft working on Teams feature to help admins block unauthorized bots 2026-03-06 at 15:39 By Sinisa Markovic Microsoft plans to add a new Teams feature that lets meeting admins identify and control third-party bots before they join. According to the Microsoft 365 Roadmap, the feature is scheduled to begin rolling out in May 2026 on

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Microsoft revokes 200 certs used to sign malicious Teams installers

certificates, Don't miss, Hot stuff, Microsoft, Microsoft Teams, News, Ransomware /

Microsoft revokes 200 certs used to sign malicious Teams installers 2025-10-17 at 15:59 By Zeljka Zorz By revoking 200 software-signing certificates, Microsoft has hampered the activities of Vanilla Tempest, a ransomware-wielding threat actor that has been targeting organizations with malware posing as Microsoft Teams. “In this campaign, Vanilla Tempest used fake MSTeamsSetup.exe files hosted on

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How to prevent data leakage in collaboration tools like Slack and Teams

CASB, cybersecurity, Data leak, how-to, Microsoft Teams, News, Slack, Zoom /

How to prevent data leakage in collaboration tools like Slack and Teams 2025-03-06 at 08:03 By Help Net Security In recent years, collaboration tools have become an absolute necessity for remote and hybrid work. This primarily increased during the COVID-19 pandemic due to the impossibility of communicating in person. So, tools like Slack, Microsoft Teams,

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Ransomware attackers are “vishing” organizations via Microsoft Teams

Don't miss, enterprise, Hot stuff, Microsoft 365, Microsoft Teams, News, Ransomware, remote access, SMBs, social engineering, Sophos /

Ransomware attackers are “vishing” organizations via Microsoft Teams 2025-01-21 at 14:10 By Zeljka Zorz The “email bombing + posing as tech support via Microsoft Teams” combination is proving fruitful for two threat actors looking to deliver ransomware to organizations, and they seem to be ramping up their efforts. “Sophos MDR has observed more than 15

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Nextcloud Talk: Open-source, GDPR-compliant alternative to Microsoft Teams

Microsoft Teams, News, open source, software /

Nextcloud Talk: Open-source, GDPR-compliant alternative to Microsoft Teams 2024-12-03 at 11:18 By Mirko Zorz Nextcloud has unveiled Nextcloud Talk, an open-source alternative to Microsoft Teams. It’s a privacy-compliant collaboration platform for hybrid teams that gives companies complete control over their data. Nextcloud Talk collaboration software delivers highly secure, GDPR-compliant communication while providing all the essential

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Black Basta operators phish employees via Microsoft Teams

Don't miss, enterprise, Hot stuff, Microsoft Teams, News, phishing, Ransomware, ReliaQuest, SMBs, social engineering /

Black Basta operators phish employees via Microsoft Teams 2024-10-28 at 18:51 By Zeljka Zorz Black Basta ransomware affiliates are still trying to trick enterprise employees into installing remote access tool by posing as help desk workers, now also via Microsoft Teams. Phishing via MS Teams Earlier this year, Rapid7 warned about Black Basta using the

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Vulnerabilities in Microsoft macOS apps may give attackers access to microphone, camera

apple, Cisco, Don't miss, Hot stuff, Microsoft, Microsoft Teams, News, vulnerability /

Vulnerabilities in Microsoft macOS apps may give attackers access to microphone, camera 2024-08-20 at 13:46 By Zeljka Zorz Vulnerabilities in popular Microsoft apps for macOS can be abused by attackers to record video and audio clips, take pictures, access and exfiltrate data and send emails, Cisco Talos researchers have discovered. Library injection vulnerabilities in Microsoft

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Google “confirms” that exploited Chrome zero-day is actually in libwebp (CVE-2023-5129)

1Password, Alpine, Chrome, containers, Debian, Don't miss, Firefox, Google, Hot stuff, LibreOffice, Linux, macOS, Microsoft Teams, News, Opera, patch, patching, Rezilion, runZero, Signal, Slack, SUSE, Telegram, Ubuntu, Vivaldi, vulnerability, vulnerability management /

Google “confirms” that exploited Chrome zero-day is actually in libwebp (CVE-2023-5129) 27/09/2023 at 14:46 By Zeljka Zorz The Chrome zero-day exploited in the wild and patched by Google a few weeks ago has a new ID (CVE-2023-5129) and a description that tells the whole story: the vulnerability is not in Chrome, but the libwebp library,

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Microsoft Teams phishing: Enterprises targeted by ransomware access broker

Don't miss, Hot stuff, initial access broker, Microsoft, Microsoft Teams, News, phishing, Ransomware /

Microsoft Teams phishing: Enterprises targeted by ransomware access broker 13/09/2023 at 12:16 By Zeljka Zorz A threat actor known for providing ransomware gangs with initial access to enterprise systems has began phishing employees via Microsoft Teams. “For this activity, Storm-0324 most likely relies on a publicly available tool called TeamsPhisher,” Microsoft threat researchers noted. About

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Microsoft Teams users targeted in phishing attack delivering DarkGate malware

Don't miss, Hot stuff, Malware, Microsoft 365, Microsoft Teams, News, phishing /

Microsoft Teams users targeted in phishing attack delivering DarkGate malware 11/09/2023 at 13:31 By Helga Labus A new phishing campaign taking advantage of an easily exploitable issue in Microsoft Teams to deliver malware has been flagged by researchers. Delivering malware to Microsoft Teams users Late last month, Truesec researchers spotted two compromised Microsoft 365 accounts

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August 2023 Patch Tuesday: Microsoft fixes critical bugs in Teams, MSMQ

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August 2023 Patch Tuesday: Microsoft fixes critical bugs in Teams, MSMQ 08/08/2023 at 22:46 By Zeljka Zorz August 2023 Patch Tuesday is here; among the 76 CVE-numbered issues fixed by Microsoft this time around is a DoS vulnerability in .NET and Visual Studio (CVE-2023-38180) for which proof-of-exploit code exists. Other than the fact that a

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Russian APT phished government employees via Microsoft Teams

APT, Don't miss, Government, government-backed attacks, Hot stuff, Microsoft, Microsoft Teams, News, phishing, social engineering /

Russian APT phished government employees via Microsoft Teams 03/08/2023 at 15:17 By Zeljka Zorz An APT group linked to Russia’s Foreign Intelligence Service has hit employees of several dozen global organizations with phishing attacks via Microsoft Teams, says Microsoft. A social engineering attack to bypass MFA protection “To facilitate their attack, the actor uses Microsoft

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Malware delivery to Microsoft Teams users made easy

collaboration, Don't miss, enterprise, Hot stuff, Malware, Microsoft 365, Microsoft Teams, News, red team, SMBs, vulnerability /

Malware delivery to Microsoft Teams users made easy 10/07/2023 at 14:33 By Zeljka Zorz A tool that automates the delivery of malware from external attackers to target employees’ Microsoft Teams inbox has been released. TeamsPhisher (Source: Alex Reid) About the exploited vulnerability As noted by Jumpsec researchers Max Corbridge and Tom Ellson, Microsoft Teams’ default

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Microsoft Teams vulnerability allows attackers to deliver malware to employees

collaboration, Don't miss, enterprise, Hot stuff, Jumpsec, Malware, Microsoft 365, Microsoft Teams, News, red team, SMBs, vulnerability /

Microsoft Teams vulnerability allows attackers to deliver malware to employees 23/06/2023 at 15:24 By Zeljka Zorz Security researchers have uncovered a bug that could allow attackers to deliver malware directly into employees’ Microsoft Teams inbox. “Organisations that use Microsoft Teams inherit Microsoft’s default configuration which allows users from outside of their organisation to reach out

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Anonymous Sudan Launches Fresh Wave of DDoS Attacks on American Organizations Including Microsoft

Anonymous Sudan, DDoS Attack, DDos botnet, EX571516, Godzilla Botnet, Hacktivism, Hacktivists, Healthcare Service, Microsoft, Microsoft Outlook, Microsoft Teams, MO571683, Office 365, OneDrive, Scandinavian Airlines, SharePoint Online, SkyNet, Telegram, Threat Actors, Twitter, XML-RPC floods, Zero Day Vulnerability /

Anonymous Sudan Launches Fresh Wave of DDoS Attacks on American Organizations Including Microsoft 07/06/2023 at 16:31 By cybleinc Cyble analyzes recent hacktivism claims by Anonymous Sudan impacting US entities including Microsoft Corporation. The post Anonymous Sudan Launches Fresh Wave of DDoS Attacks on American Organizations Including Microsoft appeared first on Cyble. This article is an

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