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Microsoft

Tracked by 3 people · Cloud Provider

Track Microsoft

Incident history

CISA Advisories·
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CISA Adds Four Known Exploited Vulnerabilities to Catalog

CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-75650 Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine Vulnerability CVE-2026-81963 Microsoft Windows Link Following Vulnerability CVE-2026-85880 Microsoft Windows Heap-Based Buffer Overflow Vulnerability CVE-2026-86218 N-able N-central Static Code Injection Vulnerability These types of vulnerabilities…

CSO Online·3 sources
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BigBear 2.0 phishing campaign hijacks Microsoft 365 sessions after MFA

A phishing-as-a-service operation targeting Microsoft 365 users has harvested thousands of session cookies that could be used to hijack authenticated sessions after victims complete multifactor authentication, CloudSEK said. The cybersecurity firm said in a report that it uncovered the operation, known as BigBear 2.0, in June after gaining access to its administrative panel. The panel contained 5,137 credential records linked to 461 targeted organizations across more than 40 countries. CloudSEK…

The Hacker News·
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Fake IT Calls Target Executives in Microsoft 365 Data Theft and Extortion Attacks

Threat hunters have disclosed details of a widespread data theft and extortion threat cluster that's targeting Microsoft 365 and other software-as-a-service (SaaS) offerings through information technology (IT) help desk vishing, adversary-in-the-middle (AitM) token theft, and residential-proxy sign-ins. The activity, which mainly singles out directors, vice presidents, and other executive staff

The Hacker News·
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Four REVSTEALER-Linked Modules Disable Windows Update and Defender to Run a Crypto Miner

Elastic Security Labs has documented four previously unreported programs associated with REVSTEALER, an emerging Windows information stealer, that remain on an infected machine after the stealer deletes itself. One of them switches off Windows Update and Microsoft Defender before running a cryptocurrency miner. The company named the four programs ProManager, WinUpdate, SoftManager, and

The Hacker News·
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Phishing Campaign Sends Millions of Emails Using Invisible Unicode to Evade Filters

Microsoft is alerting of a "high-volume phishing campaign" that's using invisible Unicode tag characters to bypass email filters. "Instead of using these characters to hide instructions from people while exposing them to AI models, the attacker used them to split financial lure words such as 'funding' to prevent email filters from parsing them," the Microsoft Security Research team said. The

CSO Online·
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Counterfeit installers turn routine software downloads into enterprise breaches

Microsoft has warned that attackers are breaching enterprise systems via counterfeit download sites impersonating software including Microsoft Edge, Kaspersky and Razer, delivering trojanized installers for persistent access. “Once executed, the malicious installers deploy malware that establishes persistence, attempts to weaken security protections, and communicates with attacker-controlled infrastructure,” Microsoft security researchers wrote in a blog post. The campaign, tracked by Microsoft…