IoT devices and Linux-based systems targeted by OpenSSH trojan campaign
Microsoft has uncovered an attack leveraging custom and open-source tools to target internet-facing IoT devices and Linux-based systems.
Cyberattacker techniques, tools, and infrastructure
Cyberattackers constantly evolve their techniques, tools, and infrastructure to launch increasingly complex attacks. Learn about the latest tactics and how to detect, disrupt, and defend against them.
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Modernize your Security Operations Center with Microsoft Sentinel
Microsoft Sentinel is a cloud-native SIEM solution powered by AI and automation that delivers intelligent security analytics across your entire enterprise.
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Cadet Blizzard emerges as a novel and distinct Russian threat actor
Microsoft attributes several campaigns to a distinct Russian state-sponsored threat actor tracked as Cadet Blizzard (DEV-0586), including the WhisperGate destructive attack, Ukrainian website defacements, and the hack-and-leak front “Free Civilian”. -
Detecting and mitigating a multi-stage AiTM phishing and BEC campaign
Microsoft Defender Experts observed a multi-stage adversary-in-the-middle (AiTM) and business email compromise (BEC) attack targeting banking and financial services organizations over two days. -
Guidance for investigating attacks using CVE-2023-23397
This guide provides steps organizations can take to assess whether users have been targeted or compromised by threat actors exploiting CVE-2023-23397. Tailored AI insights from Microsoft Security Copilot
Empower your defenders to detect hidden patterns, harden defenses, and respond to incidents faster with generative AI.
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KillNet and affiliate hacktivist groups targeting healthcare with DDoS attacks
KillNet, a group that the US Department of Health and Human Services (DHHS) has called pro-Russia hacktivists, has been launching waves of attacks targeting governments and companies with focus on the healthcare sector. -
DEV-0139 launches targeted attacks against the cryptocurrency industry
Microsoft security researchers investigate an attack where the threat actor, tracked DEV-0139, used chat groups to target specific cryptocurrency investment companies and run a backdoor within their network. -
Token tactics: How to prevent, detect, and respond to cloud token theft
As organizations increase their coverage of multifactor authentication (MFA), threat actors have begun to move to more sophisticated techniques to allow them to compromise corporate resources without needing to satisfy MFA. -
Malicious OAuth applications abuse cloud email services to spread spam
Microsoft discovered an attack where attackers installed a malicious OAuth application in compromised tenants and used their Exchange Online service to launch spam runs. Go beyond data protection with Microsoft Purview
Govern, protect, and manage all of your data with Microsoft Purview, comprehensive solutions to help give you better visibility and control.
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MagicWeb: NOBELIUM’s post-compromise trick to authenticate as anyone
Microsoft security researchers have discovered a post-compromise capability we’re calling MagicWeb, which is used by a threat actor we track as NOBELIUM to maintain persistent access to compromised environments. -
Malicious IIS extensions quietly open persistent backdoors into servers
Attackers are increasingly leveraging managed IIS extensions as covert backdoors into servers, providing a durable persistence mechanism for attacks. -
North Korean threat actor targets small and midsize businesses with H0lyGh0st ransomware
A group of actors originating from North Korea that MSTIC tracks as DEV-0530 has been developing and using ransomware in attacks since June 2021. -
From cookie theft to BEC: Attackers use AiTM phishing sites as entry point to further financial fraud
A large-scale phishing campaign that attempted to target over 10,000 organizations since September 2021 used adversary-in-the-middle (AiTM) phishing sites to steal passwords, hijack a user’s sign-in session, and skip the authentication process, even if the user had enabled multifactor authentication (MFA).
