Palo Alto Unit 42Jun 6, 2024criticalActor Exploits Microsoft Exchange Server Vulnerabilities, Cortex XDR Blocks Harvesting of CredentialsExploited13 min readcve-2021-26855cve-2021-268571
Palo Alto Unit 42Jun 6, 2024criticalTHOR: Previously Unseen PlugX Variant Deployed During Microsoft Exchange Server Attacks by PKPLUG Group15 min readcve-2021-26855cve-2021-270654
Security AffairsMar 11, 2023highPrometei botnet is targeting ProxyLogon Microsoft Exchange flaws3 min readcve-2021-27065cve-2021-268583
The RecordJan 30, 2023criticalMicrosoft: Chinese APT Targeted Exchange Servers With Four Zero2 min readcve-2021-26855cve-2021-268574
The RecordJan 17, 2023highGerman government warns of APT27 activity targeting local companies2 min readcve-2021-40539cve-2021-268552
The RecordJan 10, 2023criticalCISA: Multiple government hacking groups had ‘long4 min readcve-2021-26855cve-2021-268572
Security AffairsJan 4, 2022criticalThe worst cyber attacks of 2021Exploited4 min readcve-2021-26855cve-2021-268573
Help Net SecurityDec 10, 2021criticalMicrosoft vulnerabilities have grave implications for organizations of all sizes7 min readcve-2021-26855cve-2021-270653
The Hacker NewsAug 15, 2021highHackers Actively Searching for Unpatched Microsoft Exchange ServersExploited3 min readcve-2021-26855cve-2021-270652
The Hacker NewsAug 13, 2021criticalMicrosoft Issues Security Patches for 89 Flaws — IE 0Exploited3 min readcve-2021-26855cve-2021-268574
Security AffairsJul 28, 2021US, UK, and Australian agencies warn of top routinely exploited issues2 min readcve-2021-26855cve-2021-268572
Security AffairsJun 26, 2021highEpsilon Red – more than 3.5 thousand servers are still vulnerable5 min readcve-2020-1472cve-2021-268552
Kaspersky SecurelistJun 17, 2021criticalBlack Kingdom ransomware11 min readcve-2021-27065cve-2019-115102
Cisco TalosJun 10, 2021criticalQuarterly Report: Incident Response trends from Spring 20218 min readcve-2021-26855cve-2021-268572
Help Net SecurityJun 8, 2021criticalMarch 2021 Patch Tuesday forecast: Off to an early start3 min readcve-2021-26855cve-2021-268572
Kaspersky SecurelistMay 31, 2021criticalIT threat evolution Q1 2021Exploited15 min readcve-2021-26855cve-2021-268572
Cisco TalosMay 7, 2021criticalLemon Duck spreads its wings: Actors target Microsoft Exchange servers, incorporate new TTPs15 min readcve-2021-26855cve-2021-268574
The Hacker NewsApr 23, 2021highPrometei Botnet Exploiting Unpatched Microsoft Exchange Servers3 min readcve-2021-27065cve-2021-268582
Infosecurity MagazineApr 22, 2021criticalPrometei Botnet Exploits Exchange Server Bugs to Grow2 min readcve-2021-27065cve-2021-268582
Help Net SecurityApr 22, 2021highMonero-mining botnet targets orgs through recent MS Exchange vulnerabilities2 min readcve-2021-27065cve-2021-268583
Security AffairsApr 14, 2021criticalFBI silently removed web shells planted on Microsoft Exchange serversExploited3 min readcve-2021-26855cve-2021-268572
Infosecurity MagazineMar 30, 2021highConcerns as Ransomware and Exchange Server Attacks Surge2 min readcve-2021-27065ransomware2
Security AffairsMar 25, 2021critical62,000 Microsoft Exchange Servers potentially left unpatchedExploited3 min readcve-2021-26855cve-2021-268572