password spraying

About this tag
Password spraying is a cyberattack technique where adversaries attempt to access numerous accounts by trying a few commonly used passwords, avoiding account lockouts that typically occur after multiple failed login attempts. Recent threat intelligence highlights a dramatic surge in password spraying attacks targeting enterprise infrastructures, including a 399% increase in attacks on Cisco ASA VPN systems and a 21% rise in assaults on Microsoft 365 authentication platforms. A notable campaign, UNK_SneakyStrike, weaponized the legitimate penetration testing tool TeamFiltration to target over 80,000 Microsoft Entra ID accounts across hundreds of organizations, compromising data in Microsoft Teams, OneDrive, and Outlook. These attacks exploit weak password practices and scale using automation, underscoring the need for robust defenses such as multifactor authentication and conditional access policies.
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    Azure CLI Password Spraying Hit 78 Microsoft 365 Accounts: Fix Conditional Access Gaps

    Between June 12 and June 26, 2026, Huntress researchers observed a password-spray campaign against Microsoft 365 and Azure CLI sign-ins that generated more than 81 million login attempts and compromised at least 78 accounts across 64 organizations. The numbers are big, but the lesson is more...
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    Azure CLI Password Spraying: MFA Gaps and Identity Coverage Risks

    Between June 12 and June 26, 2026, Huntress researchers observed an automated password-spray campaign targeting Microsoft Azure CLI authentication paths, logging more than 81 million sign-in attempts and 78 compromised user accounts across 64 organizations. The numbers are ugly, but the more...
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    Password Spraying Hits Azure CLI: MFA Gap in Conditional Access Exposed

    Huntress says an automated password-spray campaign that began on June 12, 2026, targeted Microsoft Azure CLI authentication and produced more than 81 million login attempts, compromising 78 Microsoft accounts across 64 organizations by late June. The campaign is not remarkable because password...
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    Password Spray Attacks Surge: Protect Your Enterprise from Rising Cyber Threats

    The cybersecurity threat landscape is experiencing a dramatic evolution, as a sharp increase in password spray attacks foreshadows a new era of risk for enterprise infrastructures. Recent telemetry and research highlight a 399% surge in attacks on Cisco ASA VPN systems during Q1 2025, paralleled...
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    How Microsoft’s Cloud Tools Were Weaponized in the UNK_SneakyStrike Cyberattack

    Microsoft’s cloud services ecosystem—encompassing Microsoft Teams, Outlook, OneDrive, and broader Office 365 environments—has become a double-edged sword, offering organizations unparalleled productivity while simultaneously attracting sophisticated cyber adversaries. In recent months, a series...
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    Protecting Microsoft Entra ID from AI-Driven Cloud Identity Attacks Using TeamFiltration

    A new and deeply concerning evolution in cyberattack methodology is putting Microsoft Entra ID (formerly known as Azure Active Directory) users and organizations at unprecedented risk. This surge in account takeover (ATO) campaigns exploits TeamFiltration—a legitimate penetration testing tool...
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    Password Spraying Attacks Using Legitimate Tools: The UNK_SneakyStrike Case

    Password spraying attacks have become one of the most persistent and damaging techniques in the arsenal of modern cybercriminals, as demonstrated by a newly disclosed incident in which over 80,000 Microsoft Entra ID accounts were targeted using legitimate penetration testing tools. According to...
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    Defending Against Microsoft Entra ID Password Spraying: Essential Strategies

    Microsoft account users are once again facing a formidable cybersecurity threat—this time in the form of an aggressive password spraying campaign targeting Entra ID accounts at an unprecedented scale. According to multiple verified industry sources, a threat group known as SneakyStrike, also...
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    How to Protect Microsoft Entra ID Accounts from Password Spraying Attacks in 2025

    In a recent cybersecurity incident, over 80,000 Microsoft Entra ID accounts were targeted through password spraying attacks, leading to unauthorized access to several accounts and compromising data across Microsoft Teams, OneDrive, and Outlook. Understanding Password Spraying Attacks Password...
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    How Cybercriminals Weaponize TeamFiltration to Attack Office 365 Accounts at Scale

    In recent months, the cybersecurity landscape has been rocked by a rapidly escalating campaign in which cybercriminals have weaponized TeamFiltration, a penetration testing tool, to orchestrate massive attacks on Office 365 accounts. According to incident data and credible analyses from leading...
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    UNK_SneakyStrike: How Hackers Exploit Legitimate Cloud Security Tools at Scale

    A new chapter in the ongoing battle for cloud security unfolded recently, as researchers disclosed a brazen and remarkably methodical campaign that has compromised over 80,000 user accounts spanning hundreds of organizations. The abuse of penetration testing tools—originally intended as shields...
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    Top Microsoft 365 Security Threats & Essential Mitigation Strategies in 2023

    As cyber threats targeting Microsoft 365 continue to evolve, organizations must remain vigilant to protect their critical productivity tools. Recent analyses have identified several pressing security challenges that demand immediate attention. 1. Privilege Escalation Attackers often exploit...
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    New Cyber Threat: Botnet and Password Spraying Attacks Targeting Microsoft 365 Apps

    A newly surfaced cybersecurity threat has put over 130,000 devices under the control of a sophisticated botnet, leveraging these compromised endpoints to mount large-scale password spraying attacks against Microsoft 365 accounts. This troubling development, uncovered by SecurityScorecard’s...
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    Stealthy Botnets Target Basic Authentication in Microsoft 365

    Stealthy Botnets Exploit Basic Authentication in Microsoft 365 A new cyber threat campaign is making waves within the Microsoft 365 ecosystem, and if you’re an IT professional or Windows user, it’s time to take a closer look. Recent findings from Security Scorecard reveal that state-backed...
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    Combatting New Botnet Threats: Protecting Microsoft 365 Accounts

    A recent coordinated botnet campaign targeting Microsoft 365 accounts has raised alarms within the cybersecurity community. According to detailed reporting by Security Magazine, a sprawling network of more than 130,000 compromised devices is carrying out password spraying attacks with a twist...
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    Cybersecurity Alert: Protect Microsoft 365 from Sophisticated Password Spray Attacks

    A new cybersecurity menace is on the rise, and Microsoft 365 users should sit up and take notice. Recent reports from Petri.com reveal that a Chinese-affiliated botnet, orchestrating attacks from over 130,000 compromised devices, is conducting a stealthy password spray campaign aimed at...
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    Guarding Microsoft 365: Combating Sophisticated Cyber Threats

    A new wave of cyber threats is targeting Microsoft 365 users in a sophisticated attack campaign. A suspected China-linked botnet—comprising over 130,000 compromised devices—has been launching password-spraying attacks against Microsoft 365 accounts. By exploiting legacy Basic Authentication...
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    Unmasking the Botnet Threat: Over 130,000 Devices Target Microsoft 365

    A recent report from SecurityScorecard's STRIKE Threat Intelligence team has raised alarm bells across the IT security landscape. Over 130,000 compromised devices have been co-opted into a massive botnet campaign that leverages password spraying attacks, targeting Microsoft 365 accounts with an...
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    Stealthy Botnet Targets Microsoft 365 Accounts: Understanding the Threat

    A sophisticated botnet is silently targeting Microsoft 365 accounts around the globe. This stealthy campaign leverages a unique password spraying technique against non-interactive sign-ins—a method designed to evade traditional security measures. In this article, we delve into the mechanics of...
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    Massive Botnet Attack on Microsoft 365: Understanding the Threat and Mitigation Strategies

    A newly uncovered cyberattack campaign has sent shockwaves through the IT security community, with a massive botnet targeting Microsoft 365 accounts using an unusually stealthy method. This campaign, orchestrated by a network of over 130,000 compromised devices, is leveraging password spraying...
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